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  • UC3842D8TR图
  • 深圳市高捷芯城科技有限公司

     该会员已使用本站11年以上
  • UC3842D8TR 现货库存
  • 数量6825 
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     该会员已使用本站12年以上
  • UC3842D8TR 现货库存
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  • 深圳市宗天技术开发有限公司

     该会员已使用本站10年以上
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  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
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  • 数量2500 
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  • 深圳市广百利电子有限公司

     该会员已使用本站6年以上
  • UC3842D8TR 现货库存
  • 数量18500 
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  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • UC3842D8TR
  • 数量85000 
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  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • UC3842D8TR
  • 数量36000 
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  • 深圳市旺能芯科技有限公司

     该会员已使用本站4年以上
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  • 数量15000 
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  • 深圳市龙腾新业科技有限公司

     该会员已使用本站17年以上
  • UC3842D8TR
  • 数量10000 
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  • 深圳市芯鹏泰科技有限公司

     该会员已使用本站8年以上
  • UC3842D8TR
  • 数量7536 
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  • 封装8-SOIC 
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  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • UC3842D8TR
  • 数量4150 
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  • 北京耐芯威科技有限公司

     该会员已使用本站12年以上
  • UC3842D8TR
  • 数量5000 
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  • 北京耐芯威科技有限公司

     该会员已使用本站13年以上
  • UC3842D8TR
  • 数量5000 
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  • 封装8-SOIC 
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  • UC3842D8TR图
  • 集好芯城

     该会员已使用本站13年以上
  • UC3842D8TR
  • 数量13788 
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  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • UC3842D8TR
  • 数量13510 
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  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • UC3842D8TR
  • 数量18836 
  • 厂家TI 
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  • 昂富(深圳)电子科技有限公司

     该会员已使用本站4年以上
  • UC3842D8TR
  • 数量72282 
  • 厂家TI/德州仪器 
  • 封装8-SOIC 
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  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • UC3842D8TR
  • 数量12500 
  • 厂家TI/德州仪器 
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  • 深圳市西源信息科技有限公司

     该会员已使用本站9年以上
  • UC3842D8TR
  • 数量8800 
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  • 深圳市集创讯科技有限公司

     该会员已使用本站5年以上
  • UC3842D8TR
  • 数量9500 
  • 厂家TI/德州仪器 
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  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • UC3842D8TR
  • 数量5000 
  • 厂家Texas Instruments 
  • 封装8-SOIC 
  • 批号2024+ 
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  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • UC3842D8TR
  • 数量5000 
  • 厂家Texas Instruments 
  • 封装8-SOIC 
  • 批号2024+ 
  • 全新原装、现货库存,欢迎询价
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  • 深圳市正信鑫科技有限公司

     该会员已使用本站12年以上
  • UC3842D8TR
  • 数量5000 
  • 厂家TI 
  • 封装原厂封装 
  • 批号22+ 
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  • 深圳市惊羽科技有限公司

     该会员已使用本站11年以上
  • UC3842D8TR
  • 数量9328 
  • 厂家TI-德州仪器 
  • 封装SOP-8.贴片 
  • 批号▉▉:2年内 
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  • 深圳市华芯盛世科技有限公司

     该会员已使用本站13年以上
  • UC3842D8TR
  • 数量865000 
  • 厂家TI 
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  • 北京耐芯威科技有限公司

     该会员已使用本站12年以上
  • UC3842D8TR
  • 数量5000 
  • 厂家 
  • 封装 
  • 批号21+ 
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  • 深圳市英德州科技有限公司

     该会员已使用本站2年以上
  • UC3842D8TR
  • 数量45200 
  • 厂家TI(德州仪器) 
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  • 深圳市宇集芯电子有限公司

     该会员已使用本站6年以上
  • UC3842D8TR
  • 数量90000 
  • 厂家TI 
  • 封装SOP8 
  • 批号23+ 
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  • 北京顺科电子科技有限公司

     该会员已使用本站8年以上
  • UC3842D8TRG4
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  • 上海磐岳电子有限公司

     该会员已使用本站11年以上
  • UC3842D8TR
  • 数量5800 
  • 厂家TI 
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     该会员已使用本站10年以上
  • UC3842D8TR
  • 数量9000 
  • 厂家TI 
  • 封装SOP8 
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  • 深圳市宗天技术开发有限公司

     该会员已使用本站10年以上
  • UC3842D8TR
  • 数量900 
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  • UC3842D8TR
  • 数量21000 
  • 厂家Texas Instruments 
  • 封装8-SOIC(0.154,3.90mm 宽) 
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     该会员已使用本站13年以上
  • UC3842D8TR
  • 数量3750 
  • 厂家TI 
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产品型号UC3842D8TR的概述

UC3842D8TR芯片的详尽分析 一、概述 UC3842D8TR是一款高效的电源管理芯片,广泛应用于各种电源转换器和电源适配器的设计中。它的设计目标是为开关电源系统提供高性能的电流模式控制。凭借其出色的稳定性和高集成度,UC3842D8TR不仅能够提高系统的效率,还能降低设计复杂性,广泛用于DC-DC变换器、AC-DC电源转换器等设计中。 二、详细参数 UC3842D8TR的主要参数包括以下几个方面: 1. 工作电压范围:UC3842D8TR的工作电压范围通常在8V至40V之间,这使其适应多种电源输入条件。 2. 输出电流能力:该芯片可以提供约1A的输出电流,适合于频繁的开关需求。 3. 频率范围:通过外部电阻和电容可以设置频率,一般在100kHz至500kHz之间。 4. 起始电流:该芯片的启动电流典型值为一百微安(100µA),这使得它在启动过程中能有效降低功耗。 5. 死区时...

产品型号UC3842D8TR的Datasheet PDF文件预览

UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
Current Mode PWM Controller  
FEATURES  
DESCRIPTION  
Optimized For Off-line And DC  
To DC Converters  
The UC1842/3/4/5 family of control ICs provides the necessary features to  
implement off-line or DC to DC fixed frequency current mode control schemes  
with a minimal external parts count. Internally implemented circuits include  
under-voltage lockout featuring start up current less than 1mA, a precision  
reference trimmed for accuracy at the error amp input, logic to insure latched  
operation, a PWM comparator which also provides current limit control, and a  
totem pole output stage designed to source or sink high peak current. The  
output stage, suitable for driving N Channel MOSFETs, is low in the off state.  
Low Start Up Current (<1mA)  
Automatic Feed Forward  
Compensation  
Pulse-by-pulse Current Limiting  
Enhanced Load Response  
Characteristics  
Differences between members of this family are the under-voltage lockout  
thresholds and maximum duty cycle ranges. The UC1842 and UC1844 have  
UVLO thresholds of 16V (on) and 10V (off), ideally suited to off-line  
applications. The corresponding thresholds for the UC1843 and UC1845 are  
8.4V and 7.6V. The UC1842 and UC1843 can operate to duty cycles  
approaching 100%. A range of zero to 50% is obtained by the UC1844 and  
UC1845 by the addition of an internal toggle flip flop which blanks the output  
off every other clock cycle.  
Under-voltage Lockout With  
Hysteresis  
Double Pulse Suppression  
High Current Totem Pole  
Output  
Internally Trimmed Bandgap  
Reference  
500khz Operation  
Low RO Error Amp  
BLOCK DIAGRAM  
A/B  
Note 1:  
Note 2:  
A = DIL-8 Pin Number. B = SO-14 and CFP-14 Pin Number.  
Toggle flip flop used only in 1844 and 1845.  
SLUS223A - APRIL 1997 - REVISED MAY 2002  
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
ABSOLUTE MAXIMUM RATINGS(Note 1)  
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V  
Supply Voltage (ICC < 30mA) . . . . . . . . . . . . . . . . . Self Limiting  
Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1A  
Output Energy (Capacitive Load) . . . . . . . . . . . . . . . . . . . . 5 µJ  
Analog Inputs (Pins 2, 3). . . . . . . . . . . . . . . . . . . -0.3V to +6.3V  
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . 10 mA  
Power Dissipation at TA 25°C (DIL−8) . . . . . . . . . . . . . . . . . 1 W  
Power Dissipation at TA 25°C (SOIC-14) . . . . . . . . . 725 mW  
Storage Temperature Range. . . . . . . . . . . . . . -65°C to +150°C  
Junction Temperature Range . . . . . . . . . . . . . -55°C to +150°C  
Lead Temperature (soldering, 10 seconds). . . . . . . . . . . 300°C  
Note 1:  
All voltages are with respect to Pin 5.  
All currents are positive into the specified terminal.  
Consult Packaging Section of Databook for thermal  
limitations and considerations of packages.  
CONNECTION DIAGRAMS  
DIL-8, SOIC-8 (TOP VIEW)  
N or J Package, D8 Package  
PLCC-20 (TOP VIEW)  
Q Package  
PACKAGE PIN FUNCTION  
FUNCTION  
PIN  
1
N/C  
COMP  
N/C  
2
3
N/C  
4
VFB  
5
N/C  
6
ISENSE  
N/C  
7
8
N/C  
9
SOIC-14, CFP-14. (TOP VIEW)  
D or W Package  
RT/CT  
N/C  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
PWR GND  
GROUND  
N/C  
OUTPUT  
N/C  
VC  
VCC  
N/C  
VREF  
DISSIPATION RATING TABLE  
Package  
TA 25°C  
Derating Factor  
TA 70°C  
TA 85°C  
TA 125°C  
Power Rating  
Above TA 25°C  
Power Rating  
Power Rating  
Power Rating  
W
700 mW  
5.5 mW/°C  
452 mW  
370 mW  
150 mW  
2
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
ELECTRICAL CHARACTERISTICS:  
Unless otherwise stated, these specifications apply for -55°C TA 125°C for the  
UC184X; -40°C TA 85°C for the UC284X; 0°C TA 70°C for the 384X; VCC = 15V  
(Note 5); RT = 10k; CT = 3.3nF, TA=TJ.  
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
UNITS  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
Reference Section  
Output Voltage  
Line Regulation  
Load Regulation  
Temp. Stability  
Total Output Variation  
Output Noise Voltage  
Long Term Stability  
Output Short Circuit  
Oscillator Section  
Initial Accuracy  
Voltage Stability  
Temp. Stability  
Amplitude  
TJ = 25°C, IO = 1mA  
12 VIN 25V  
4.95  
4.9  
5.00  
6
5.05  
20  
4.90  
4.82  
5.00  
6
5.10  
20  
V
mV  
mV  
1 I0 20mA  
6
25  
6
25  
(Note 2) (Note 7)  
0.2  
0.4  
5.1  
0.2  
0.4 mV/°C  
Line, Load, Temp. (Note 2)  
10Hz f 10kHz, TJ = 25°C (Note2)  
TA = 125°C, 1000Hrs. (Note 2)  
5.18  
V
50  
5
50  
5
µV  
mV  
mA  
25  
25  
-30  
47  
-100  
-180  
-30  
47  
-100  
-180  
TJ = 25°C (Note 6)  
52  
0.2  
5
57  
1
52  
0.2  
5
57  
1
kHz  
%
12 VCC 25V  
TMIN TA TMAX (Note 2)  
VPIN 4 peak to peak (Note 2)  
%
1.7  
1.7  
V
Error Amp Section  
Input Voltage  
VPIN 1 = 2.5V  
2.45  
2.50  
-0.3  
90  
1
2.55  
-1  
2.42  
2.50  
-0.3  
90  
1
2.58  
-2  
V
µA  
dB  
MHz  
dB  
mA  
mA  
V
Input Bias Current  
AVOL  
2 VO 4V  
65  
0.7  
60  
2
65  
0.7  
60  
2
Unity Gain Bandwidth  
PSRR  
(Note 2) TJ = 25°C  
12 VCC 25V  
70  
6
70  
6
Output Sink Current  
Output Source Current  
VOUT High  
VPIN 2 = 2.7V, VPIN 1 = 1.1V  
VPIN 2 = 2.3V, VPIN 1 = 5V  
VPIN 2 = 2.3V, RL = 15k to ground  
VPIN 2 = 2.7V, RL = 15k to Pin 8  
-0.5  
5
-0.8  
6
-0.5  
5
-0.8  
6
VOUT Low  
0.7  
1.1  
0.7  
1.1  
V
Current Sense Section  
Gain  
(Notes 3 and 4)  
2.85  
0.9  
3
1
3.15  
1.1  
2.85  
0.9  
3
1
3.15  
1.1  
V/V  
V
Maximum Input Signal  
PSRR  
VPIN 1 = 5V (Note 3)  
12 VCC 25V (Note 3) (Note 2)  
70  
-2  
70  
-2  
dB  
µA  
ns  
Input Bias Current  
Delay to Output  
-10  
-10  
VPIN 3 = 0 to 2V (Note 2)  
150  
300  
150  
300  
Note 2:  
Note 3:  
Note 4:  
These parameters, although guaranteed, are not 100% tested in production.  
Parameter measured at trip point of latch with VPIN 2 = 0.  
Gain defined as  
VPIN 1  
A =  
, 0 VPIN 3 0.8V  
VPIN 3  
Adjust VCC above the start threshold before setting at 15V.  
Note 5:  
Note 6:  
Output frequency equals oscillator frequency for the UC1842 and UC1843.  
Output frequency is one half oscillator frequency for the UC1844 and UC1845.  
Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation:  
Note 7:  
VREF (max) VREF (min)  
Temp Stability =  
TJ (max) TJ (min)  
VREF (max) and VREF (min) are the maximum and minimum reference voltages measured over the appropriate  
temperature range. Note that the extremes in voltage do not necessarily occur at the extremes in temperature.  
3
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
Unless otherwise stated, these specifications apply for 55°C TA 125°C for the  
UC184X; 40°C TA 85°C for the UC284X; 0°C TA 70°C for the 384X; VCC =  
ELECTRICAL CHARACTERISTICS:  
15V (Note 5); RT = 10k; CT = 3.3nF, TA=TJ.  
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
UNITS  
PARAMETER  
TEST CONDITION  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
Output Section  
Output Low Level  
ISINK = 20mA  
ISINK = 200mA  
0.1  
1.5  
13.5  
13.5  
50  
0.4  
2.2  
0.1  
1.5  
13.5  
13.5  
50  
0.4  
2.2  
V
V
Output High Level  
ISOURCE = 20mA  
13  
12  
13  
12  
V
ISOURCE = 200mA  
V
Rise Time  
TJ = 25°C, CL = 1nF (Note 2)  
TJ = 25°C, CL = 1nF (Note 2)  
150  
150  
150  
150  
ns  
ns  
Fall Time  
50  
50  
Under-voltage Lockout Section  
Start Threshold  
X842/4  
X843/5  
X842/4  
X843/5  
15  
7.8  
9
16  
8.4  
10  
17  
9.0  
11  
14.5  
7.8  
8.5  
7.0  
16  
8.4  
10  
17.5  
9.0  
V
V
V
V
Min. Operating Voltage  
After Turn On  
11.5  
8.2  
7.0  
7.6  
8.2  
7.6  
PWM Section  
Maximum Duty Cycle  
X842/3  
X844/5  
95  
46  
97  
48  
100  
50  
0
95  
47  
97  
48  
100  
50  
0
%
%
%
Minimum Duty Cycle  
Total Standby Current  
Start-Up Current  
0.5  
11  
34  
1
0.5  
11  
34  
1
mA  
mA  
V
Operating Supply Current  
VPIN 2 = VPIN 3 = 0V  
ICC = 25mA  
17  
17  
VCC Zener Voltage  
30  
30  
Note 2:  
Note 3:  
.
These parameters, although guaranteed, are not 100% tested in production.  
Parameter measured at trip point of latch with VPIN 2 = 0  
VPIN 1  
Note 4:  
Gain defined as: A =  
; 0 VPIN 3 0.8V.  
VPIN 3  
Note 5:  
Note 6:  
Adjust VCC above the start threshold before setting at 15V.  
Output frequency equals oscillator frequency for the UC1842 and UC1843.  
Output frequency is one half oscillator frequency for the UC1844 and UC1845.  
ERROR AMP CONFIGURATION  
Error Amp can Source or Sink up to 0.5mA  
4
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
UNDER-VOLTAGE LOCKOUT  
During under-voltage lock-out, the output driver is activating the power switch with extraneous leakage  
biased to sink minor amounts of current. Pin 6 should currents.  
be shunted to ground with a bleeder resistor to prevent  
CURRENT SENSE CIRCUIT  
Peak Current (IS) is Determined By The Formula  
1.0V  
ISMAX ′  
RS  
A small RC filter may be required to suppress switch transients.  
OSCILLATOR SECTION  
5
UC1842/3/4/5  
UC2842/3/4/5  
ERROR AMPLIFIER OPEN-LOOP  
FREQUENCY RESPONSE  
OUTPUT SATURATION CHARACTERISTICS  
OPEN-LOOP LABORATORY FIXTURE  
High peak currents associated with capacitive loads ne- single point ground. The transistor and 5k potentiometer  
cessitate careful grounding techniques. Timing and by- are used to sample the oscillator waveform and apply  
pass capacitors should be connected close to pin 5 in a an adjustable ramp to pin 3.  
SHUT DOWN TECHNIQUES  
Shutdown of the UC1842 can be accomplished by two clock cycle after the shutdown condition at pin 1 and/or  
methods; either raise pin 3 above 1V or pull pin 1 below 3 is removed. In one example, an externally latched  
a voltage two diode drops above ground. Either method shutdown may be accomplished by adding an SCR  
causes the output of the PWM comparator to be high which will be reset by cycling VCC below the lower  
(refer to block diagram). The PWM latch is reset domi- UVLO threshold. At this point the reference turns off, al-  
nant so that the output will remain low until the next lowing the SCR to reset.  
6
UC1842/3/4/5  
UC2842/3/4/5  
UC3842/3/4/5  
OFFLINE FLYBACK REGULATOR  
Power Supply Specifications  
5. Output Voltage:  
A. +5V, ±5%; 1A to 4A load  
Ripple voltage: 50mV P-P Max  
1. Input Voltages  
5VAC to 130VA  
(50 Hz/60Hz)  
B. +12V, ±3%; 0.1A to 0.3A load  
Ripple voltage: 100mV P-P Max  
2. Line Isolation  
3750V  
3. Switching Frequency 40kHz  
4. Efficiency at Full Load 70%  
C. -12V ,±3%; 0.1A to 0.3A load  
Ripple voltage: 100mV P-P Max  
SLOPE COMPENSATION  
A fraction of the oscillator ramp can be resistively  
summed with the current sense signal to provide  
slope compensation for converters requiring duty  
cycles over 50%.  
7
PACKAGE OPTION ADDENDUM  
www.ti.com  
4-Mar-2005  
PACKAGING INFORMATION  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
CDIP  
CDIP  
LCCC  
LCCC  
CDIP  
CDIP  
LCCC  
LCCC  
CDIP  
CDIP  
LCCC  
LCCC  
CDIP  
CDIP  
LCCC  
LCCC  
CDIP  
CDIP  
CDIP  
LCCC  
CFP  
Drawing  
JG  
JG  
FK  
FK  
JG  
JG  
FK  
FK  
JG  
JG  
FK  
FK  
JG  
JG  
FK  
FK  
JG  
JG  
JG  
FK  
W
5962-8670401PA  
5962-8670401VPA  
5962-8670401VXA  
5962-8670401XA  
5962-8670402PA  
5962-8670402VPA  
5962-8670402VXA  
5962-8670402XA  
5962-8670403PA  
5962-8670403VPA  
5962-8670403VXA  
5962-8670403XA  
5962-8670404PA  
5962-8670404VPA  
5962-8670404VXA  
5962-8670404XA  
UC1842J  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
8
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
20  
20  
8
Call TI  
POST-PLATE Level-NC-NC-NC  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
8
20  
20  
8
Call TI  
POST-PLATE Level-NC-NC-NC  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
8
20  
20  
8
Call TI  
POST-PLATE Level-NC-NC-NC  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
8
20  
20  
8
Call TI  
POST-PLATE Level-NC-NC-NC  
A42 SNPB  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Call TI  
UC1842J883B  
UC1842JQMLV  
UC1842L883B  
UC1842W  
8
8
20  
14  
8
1
1
1
1
POST-PLATE Level-NC-NC-NC  
A42 SNPB  
A42 SNPB  
A42 SNPB  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Call TI  
UC1843J  
CDIP  
CDIP  
CDIP  
LCCC  
LCCC  
LCCC  
CFP  
JG  
JG  
JG  
FK  
FK  
FK  
W
UC1843J883B  
UC1843JQMLV  
UC1843L  
8
8
20  
20  
20  
14  
8
1
1
POST-PLATE Level-NC-NC-NC  
POST-PLATE Level-NC-NC-NC  
UC1843L883B  
UC1843LQMLV  
UC1843W  
Call TI  
A42 SNPB  
A42 SNPB  
A42 SNPB  
Call TI  
Call TI  
1
1
1
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Call TI  
UC1844J  
CDIP  
CDIP  
CDIP  
LCCC  
LCCC  
LCCC  
CFP  
JG  
JG  
JG  
FK  
FK  
FK  
W
UC1844J883B  
UC1844JQMLV  
UC1844L  
8
8
20  
20  
20  
14  
8
1
1
POST-PLATE Level-NC-NC-NC  
POST-PLATE Level-NC-NC-NC  
UC1844L883B  
UC1844LQMLV  
UC1844W  
Call TI  
A42 SNPB  
A42 SNPB  
A42 SNPB  
Call TI  
Call TI  
1
1
1
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Call TI  
UC1845J  
CDIP  
CDIP  
CDIP  
LCCC  
LCCC  
LCCC  
CFP  
JG  
JG  
JG  
FK  
FK  
FK  
W
UC1845J883B  
UC1845JQMLV  
UC1845L  
8
8
20  
20  
20  
14  
1
1
POST-PLATE Level-NC-NC-NC  
POST-PLATE Level-NC-NC-NC  
UC1845L883B  
UC1845LQMLV  
UC1845W  
Call TI  
Call TI  
1
A42 SNPB  
Level-NC-NC-NC  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
4-Mar-2005  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
Drawing  
UC2842D  
UC2842D8  
UC2842D8TR  
UC2842DR  
UC2842DTR  
UC2842DW  
UC2842DWTR  
UC2842J  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
OBSOLETE  
ACTIVE  
D
D
14  
8
50  
75  
None  
None  
None  
None  
None  
None  
None  
None  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
D
8
2500  
D
14  
14  
16  
16  
8
Call TI  
Call TI  
D
2500  
40  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-2-220C-1 YEAR  
CU NIPDAU Level-2-220C-1 YEAR  
DW  
DW  
JG  
P
2000  
Call TI  
Call TI  
UC2842N  
8
50  
Pb-Free  
(RoHS)  
CU SNPB  
Level-NC-NC-NC  
UC2842P  
UC2843D  
OBSOLETE  
ACTIVE  
PDIP  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
P
D
8
14  
8
None  
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
50  
75  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
UC2843D8  
UC2843D8TR  
UC2843DR  
UC2843DTR  
UC2843J  
ACTIVE  
D
ACTIVE  
D
8
2500  
OBSOLETE  
ACTIVE  
D
14  
14  
8
Call TI  
Call TI  
D
2500  
50  
CU NIPDAU Level-1-220C-UNLIM  
OBSOLETE  
ACTIVE  
JG  
P
Call TI  
Call TI  
UC2843N  
8
Pb-Free  
(RoHS)  
CU SNPB  
Level-NC-NC-NC  
UC2844D  
UC2844D8  
UC2844D8TR  
UC2844DTR  
UC2844N  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
SOIC  
SOIC  
SOIC  
SOIC  
PDIP  
D
D
D
D
P
14  
8
50  
75  
None  
None  
None  
None  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
8
2500  
2500  
50  
14  
8
Pb-Free  
(RoHS)  
CU SNPB  
Level-NC-NC-NC  
UC2845D  
UC2845D8  
UC2845D8TR  
UC2845DTR  
UC2845J  
ACTIVE  
ACTIVE  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
D
D
14  
8
50  
75  
None  
None  
None  
None  
None  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
ACTIVE  
D
8
2500  
2500  
ACTIVE  
D
14  
8
OBSOLETE  
ACTIVE  
JG  
P
Call TI  
Call TI  
UC2845N  
8
50  
Pb-Free  
(RoHS)  
CU SNPB  
Level-NC-NC-NC  
UC3842D  
UC3842D8  
UC3842D8TR  
UC3842DTR  
UC3842J  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
D
D
14  
8
50  
75  
None  
None  
None  
None  
None  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
D
8
2500  
2500  
1
D
14  
8
JG  
P
A42 SNPB  
CU SNPB  
Level-NC-NC-NC  
Level-NC-NC-NC  
UC3842N  
8
50  
Pb-Free  
(RoHS)  
UC3842P  
UC3843D  
OBSOLETE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
PDIP  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
P
D
8
14  
8
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
50  
75  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
UC3843D8  
UC3843D8TR  
UC3843DTR  
UC3843J  
D
D
8
2500  
2500  
1
D
14  
8
JG  
A42 SNPB  
Level-NC-NC-NC  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
4-Mar-2005  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
UC3843N  
ACTIVE  
PDIP  
P
8
50  
Pb-Free  
(RoHS)  
CU SNPB  
Level-NC-NC-NC  
UC3843P  
UC3843QTR  
UC3844D  
OBSOLETE  
OBSOLETE  
ACTIVE  
PDIP  
PLCC  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
P
FN  
D
8
20  
14  
8
None  
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
Call TI  
Call TI  
50  
75  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
UC3844D8  
UC3844D8TR  
UC3844DTR  
UC3844J  
ACTIVE  
D
ACTIVE  
D
8
2500  
2500  
1
ACTIVE  
D
14  
8
ACTIVE  
JG  
P
A42 SNPB  
CU SNPB  
Level-NC-NC-NC  
Level-NC-NC-NC  
UC3844N  
ACTIVE  
8
50  
Pb-Free  
(RoHS)  
UC3844P  
UC3845D  
OBSOLETE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
PDIP  
SOIC  
SOIC  
SOIC  
SOIC  
CDIP  
PDIP  
P
D
8
14  
8
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
50  
75  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
CU NIPDAU Level-1-220C-UNLIM  
UC3845D8  
UC3845D8TR  
UC3845DTR  
UC3845J  
D
D
8
2500  
2500  
1
D
14  
8
JG  
P
A42 SNPB  
CU SNPB  
Level-NC-NC-NC  
Level-NC-NC-NC  
UC3845N  
8
50  
Pb-Free  
(RoHS)  
UC3845P  
OBSOLETE  
PDIP  
P
8
None  
Call TI  
Call TI  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional  
product content details.  
None: Not yet available Lead (Pb-Free).  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,  
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 3  
MECHANICAL DATA  
MCER001A – JANUARY 1995 – REVISED JANUARY 1997  
JG (R-GDIP-T8)  
CERAMIC DUAL-IN-LINE  
0.400 (10,16)  
0.355 (9,00)  
8
5
0.280 (7,11)  
0.245 (6,22)  
1
4
0.065 (1,65)  
0.045 (1,14)  
0.310 (7,87)  
0.290 (7,37)  
0.063 (1,60)  
0.015 (0,38)  
0.020 (0,51) MIN  
0.200 (5,08) MAX  
0.130 (3,30) MIN  
Seating Plane  
0.023 (0,58)  
0.015 (0,38)  
0°–15°  
0.100 (2,54)  
0.014 (0,36)  
0.008 (0,20)  
4040107/C 08/96  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. This package can be hermetically sealed with a ceramic lid using glass frit.  
D. Index point is provided on cap for terminal identification.  
E. Falls within MIL STD 1835 GDIP1-T8  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
MECHANICAL DATA  
MLCC006B – OCTOBER 1996  
FK (S-CQCC-N**)  
LEADLESS CERAMIC CHIP CARRIER  
28 TERMINAL SHOWN  
A
B
NO. OF  
TERMINALS  
**  
18 17 16 15 14 13 12  
MIN  
MAX  
MIN  
MAX  
0.342  
(8,69)  
0.358  
(9,09)  
0.307  
(7,80)  
0.358  
(9,09)  
19  
20  
11  
10  
9
20  
28  
44  
52  
68  
84  
0.442  
(11,23)  
0.458  
(11,63)  
0.406  
(10,31)  
0.458  
(11,63)  
21  
B SQ  
22  
0.640  
(16,26)  
0.660  
(16,76)  
0.495  
(12,58)  
0.560  
(14,22)  
8
A SQ  
23  
0.739  
(18,78)  
0.761  
(19,32)  
0.495  
(12,58)  
0.560  
(14,22)  
7
24  
25  
6
0.938  
(23,83)  
0.962  
(24,43)  
0.850  
(21,6)  
0.858  
(21,8)  
5
1.141  
(28,99)  
1.165  
(29,59)  
1.047  
(26,6)  
1.063  
(27,0)  
26 27 28  
1
2
3
4
0.080 (2,03)  
0.064 (1,63)  
0.020 (0,51)  
0.010 (0,25)  
0.020 (0,51)  
0.010 (0,25)  
0.055 (1,40)  
0.045 (1,14)  
0.045 (1,14)  
0.035 (0,89)  
0.045 (1,14)  
0.035 (0,89)  
0.028 (0,71)  
0.022 (0,54)  
0.050 (1,27)  
4040140/D 10/96  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. This package can be hermetically sealed with a metal lid.  
D. The terminals are gold plated.  
E. Falls within JEDEC MS-004  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
MECHANICAL DATA  
MPDI001A – JANUARY 1995 – REVISED JUNE 1999  
P (R-PDIP-T8)  
PLASTIC DUAL-IN-LINE  
0.400 (10,60)  
0.355 (9,02)  
8
5
0.260 (6,60)  
0.240 (6,10)  
1
4
0.070 (1,78) MAX  
0.325 (8,26)  
0.300 (7,62)  
0.020 (0,51) MIN  
0.015 (0,38)  
Gage Plane  
0.200 (5,08) MAX  
Seating Plane  
0.010 (0,25) NOM  
0.125 (3,18) MIN  
0.100 (2,54)  
0.021 (0,53)  
0.430 (10,92)  
MAX  
0.010 (0,25)  
M
0.015 (0,38)  
4040082/D 05/98  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. Falls within JEDEC MS-001  
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
MECHANICAL DATA  
MPLC004A – OCTOBER 1994  
FN (S-PQCC-J**)  
PLASTIC J-LEADED CHIP CARRIER  
20 PIN SHOWN  
Seating Plane  
0.004 (0,10)  
0.180 (4,57) MAX  
0.120 (3,05)  
D
0.090 (2,29)  
D1  
0.020 (0,51) MIN  
3
1
19  
0.032 (0,81)  
0.026 (0,66)  
4
18  
D2/E2  
D2/E2  
E
E1  
8
14  
0.021 (0,53)  
0.013 (0,33)  
0.050 (1,27)  
9
13  
0.007 (0,18)  
M
0.008 (0,20) NOM  
D/E  
D1/E1  
D2/E2  
NO. OF  
PINS  
**  
MIN  
0.385 (9,78)  
MAX  
MIN  
MAX  
MIN  
MAX  
0.395 (10,03)  
0.350 (8,89)  
0.356 (9,04)  
0.141 (3,58)  
0.191 (4,85)  
0.291 (7,39)  
0.341 (8,66)  
0.169 (4,29)  
0.219 (5,56)  
0.319 (8,10)  
0.369 (9,37)  
20  
28  
44  
52  
68  
84  
0.485 (12,32) 0.495 (12,57) 0.450 (11,43) 0.456 (11,58)  
0.685 (17,40) 0.695 (17,65) 0.650 (16,51) 0.656 (16,66)  
0.785 (19,94) 0.795 (20,19) 0.750 (19,05) 0.756 (19,20)  
0.985 (25,02) 0.995 (25,27) 0.950 (24,13) 0.958 (24,33) 0.441 (11,20) 0.469 (11,91)  
1.185 (30,10) 1.195 (30,35) 1.150 (29,21) 1.158 (29,41) 0.541 (13,74) 0.569 (14,45)  
4040005/B 03/95  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. Falls within JEDEC MS-018  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
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配单直通车
UC3842D8TR产品参数
型号:UC3842D8TR
是否无铅: 不含铅
是否Rohs认证: 符合
生命周期:Active
零件包装代码:SOIC
包装说明:GREEN, PLASTIC, MS-012AA, SOIC-8
针数:8
Reach Compliance Code:unknown
风险等级:5.07
模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION
最大输入电压:25 V
最小输入电压:11.5 V
标称输入电压:15 V
JESD-30 代码:R-PDSO-G8
JESD-609代码:e4
长度:4.9 mm
湿度敏感等级:1
功能数量:1
端子数量:8
最高工作温度:70 °C
最低工作温度:
最大输出电流:1 A
标称输出电压:5 V
封装主体材料:PLASTIC/EPOXY
封装代码:SOP
封装形状:RECTANGULAR
封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260
座面最大高度:1.75 mm
表面贴装:YES
切换器配置:SINGLE
最大切换频率:500 kHz
技术:BICMOS
温度等级:COMMERCIAL
端子面层:NICKEL PALLADIUM GOLD
端子形式:GULL WING
端子节距:1.27 mm
端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mm
Base Number Matches:1
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