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产品型号EUP7915-33VIR1的概述

EUP7915-33VIR1芯片概述 EUP7915-33VIR1是一款低压线性稳压器,其主要功能为提供稳定的3.3V输出电压,广泛应用于各类电子设备中。该芯片的设计能够满足多样化的负载要求,同时在不同工作环境下保持高效的电源管理。由于其优异的性能和可靠性,EUP7915-33VIR1成为许多电子设计工程师的首选组件之一。 详细参数 EUP7915-33VIR1的主要参数包括: - 输入电压范围:芯片可承受的输入电压范围通常在4.5V到15V之间。当输入电压高于设计的输出电压时,可以确保稳压器正常工作。 - 输出电压:该芯片的固定输出电压为3.3V,适合需要3.3V电压的多种应用。 - 输出电流:EUP7915-33VIR1的输出电流能力高达1A,这使其能够支持多种需要较大电流的设备。 - 线性度:优异的线性度使得其在负载变化时,输出电压可保持稳定,显示出良好的电源稳压性能。 - 纹波...

产品型号EUP7915-33VIR1的Datasheet PDF文件预览

EUP7915  
150mA Low-Noise LDO in SOT23-5  
DESCRIPTION  
FEATURES  
z
z
z
z
z
z
z
z
z
z
5-pin SOT23-5 Package  
2.5V to 5.5V Input Voltage Range  
50µV(rms) Output Noise  
140mV Dropout @ 150mA  
75dB PSRR at 1kHz  
Low 70µA Ground Current  
150mA Output Current  
The EUP7915 is an efficient, CMOS voltage regulator  
optimized for ultra-low-noise applications. It offers  
high output accuracy, extremely low dropout voltage  
low ground current and fast start-up time.  
The EUP7915 provides a very low noise output, ideal  
for RF applications where a clean voltage source is  
required. A noise bypass pin is also available for  
further reduction of output noise.  
Designed specifically for handheld and battery-  
Stability with 1µF Ceramic Output Capacitors  
Excellent Load/Line Transient  
powered devices, the EUP7915 provides  
a
TTL-logic-compatible enable pin. When disabled,  
power consumption drops nearly to zero.  
Thermal Shutdown and Current Limit  
The EUP7915 also works with low-ESR ceramic  
capacitors, reducing the amount of board space  
necessary for power applications, critical in handheld  
wireless devices.  
Protection  
z
z
Available in 1.2V,1.5V,1.8V,2.5V,2.8V,2.85V,  
2.9V,3.0V,3.3V,4.8V and Adjustable Voltages  
RoHS Compliant and 100% Lead (Pb)-Free  
Available in the SOT23-5 package, the EUP7915  
offers a wide range of output voltages. Key features  
include current limit, thermal shutdown and faster  
transient response.  
APPLICATIONS  
z
z
z
z
Cellular Phones  
Bluetooth Portable Radios and Accessories  
PDA and Palmtop Computers  
Consumer/Personal Electronics  
Block Diagram  
Figure 1. Fixed-Voltage  
DS7915 Ver1.4 Apr. 2008  
1
EUP7915  
Block Diagram (Continued)  
Figure 2. Adjustable Voltage  
Typical Application Circuit  
Figure 3. Fixed Output Voltage Regulator  
Figure 4. Adjustable Voltage Regulator  
DS7915 Ver1.4 Apr. 2008  
2
EUP7915  
Pin Configurations  
Package Type  
Pin Configurations  
SOT23-5  
Fixed-Voltage  
Adjustable Voltage  
Pin Description  
PIN  
VIN  
PIN  
DESCRIPTION  
1
2
3
Input voltage of the LDO  
Common ground  
GND  
VEN  
Enable input logic, enable high  
BYPASS  
ADJ  
Optional bypass capacitor for noise reduction  
4
5
Adjustable regulator feedback input. Connect to resistor divider.  
Output voltage of the LDO  
VOUT  
DS7915 Ver1.4 Apr. 2008  
3
EUP7915  
Ordering Information  
Order Number  
EUP7915-12VIR1  
EUP7915-15VIR1  
EUP7915-18VIR1  
EUP7915-25VIR1  
EUP7915-28VIR1  
EUP7915-285VIR1  
EUP7915-29VIR1  
EUP7915-30VIR1  
EUP7915-33VIR1  
EUP7915-48VIR1  
EUP7915VIR1  
Package Type  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
SOT23-5  
Marking  
Operating Temperature Range  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
-40 °C to 125°C  
ZT □ □ □ □  
ZC □ □ □ □  
ZD □ □ □ □  
ZB □ □ □ □  
ZE □ □ □ □  
ZF □ □ □ □  
ZW □ □ □ □  
ZG □ □ □ □  
ZH □ □ □ □  
ZK □ □ □ □  
ZA □ □ □ □  
EUP7915- □□□ □ □ □ □  
Lead Free Code  
1: Lead Free 0: Lead  
Packing  
R: Tape & Reel  
Operating temperature range  
I: Industry Standard  
Package Type  
V: SOT-23  
Output Voltage  
12: 1.2V 15: 1.5V  
18: 1.8V 25: 2.5V  
28: 2.8V 285: 2.85V  
29: 2.9V 30: 3.0V  
33: 3.3V 48: 4.8V  
Blank: Adjustable  
Absolute Maximum Ratings  
„
„
„
„
„
„
„
„
VIN,VEN ------------------------------------------------------------------------------- -0.3 to 6V  
VOUT ----------------------------------------------------------------- -0.3 to (VIN+0.3) 6V  
Junction Temperature ------------------------------------------------------------------- 150°C  
Storage Temperature Range ------------------------------------------------- -65°C to +150°C  
Lead Temperature ----------------------------------------------------------------------- 260°C  
Maximum Power Dissipation ---------------------------------------------------------  
0.3W  
Thermal Resistance θJA -------------------------------------------------------------- 320°C/W  
ESD Rating  
Human Body Model ------------------------------------------------------------------- 2kV  
Operating Ratings  
„
„
„
VIN ---------------------------------------------------------------------------------- 2.5 to 5.5V  
VEN -------------------------------------------------------------------- 0 to (VIN+0.3) 5.5V  
Operating Temperature Range -------------------------------------------- -40°C to +125°C  
DS7915 Ver1.4 Apr. 2008  
4
EUP7915  
Electrical Characteristics  
Conditions: VIN=VOUT+0.2V if VOUT2.5V, VIN=2.5V if VOUT<2.5V ,VEN=VIN, CIN=1uF, COUT=1uF,TA= -40~ 85℃  
Unless otherwise specified. Typical values are at 25.  
EUP7915  
Symbol  
Parameter  
Conditions  
Unit  
Min  
2.5  
-2  
Typ  
Max.  
5.5  
Input Voltage  
V
%
%
IOUT=1mA,TA=25  
OUT=1mA,TA=-40to 85℃  
2
3
VOUT Output Voltage Accuracy  
I
-3  
TA>0, VIN=VOUT + 0.2V for  
IOUTMAX Maximum Output Current  
ILIMIT Current Limit  
150  
160  
mA  
mA  
VOUT > 3.3V or VIN=VOUT +0.5V  
VOUT=VOUT(nom) 90%, T >0℃  
220  
140  
60  
400  
240  
100  
160  
×
A
IOUT=150mA, VOUT<3.3V  
VDROP Dropout Voltage (Note1)  
mV  
IOUT=100mA, VOUT>3.3V  
IQ  
Quiescent Current  
Line Regulation  
IOUT=1mA  
VIN=(VOUT+0.2V) to 5.5V,  
70  
µA  
VLNR  
0.02  
0.25  
%/V  
IOUT=1mA  
1mA I  
100mA  
OUT  
(VIN=V  
+ 0.2V)  
OUT  
VLDR  
Load Regulation  
0.002  
0.013  
1
%/mA  
1mA I  
150mA  
OUT  
OUT  
(VIN=V  
+ 0.5V)  
ISHDN Shutdown Supply Current  
VEN=0,TA=25℃  
µA  
dB  
Power Supply Ripple  
VIN=(VOUT+1V)DC+0.5VP-P f=1kHz,  
PSRR  
75  
Rejection  
ILOAD=10mA  
Output Noise Voltage  
f=10Hz~100kHz, ILOAD=10mA  
50  
µV  
(Bypass)  
Output Noise Voltage (ADJ) f=10Hz~100kHz, ILOAD=10mA  
239  
µV  
µs  
Turn-on Time (Note2)  
RLOAD=50,TA=25℃  
200  
0.4  
VENL (Maximum Low Level  
VENL  
VENH  
VIN=2.5V to 5.5V  
V
Input Voltage at EN)  
VENH (Minimum high Level  
Input Voltage at EN)  
VIN=2.5V to 5.5V  
1.5  
V
VEN Input Bias Current  
VIN=5.5V, VEN=0 or 5.5V  
VIN=5.5V, VFB=1.3V  
1
1
nA  
nA  
FB Input Bias Current (ADJ  
Version)  
FB Pin Voltage (ADJ  
Version)  
VFB  
TSD  
TA=25℃  
1.176  
1.2  
155  
15  
1.224  
V
Thermal Shutdown  
Temperature  
Thermal Shutdown  
Hysteresis  
TSD  
Note 1: The dropout voltage is defined as VIN-VOUT when VOUT is 100mV below the nominal value of VOUT.  
Note 2: Test time needed for VOUT to reach 90% of final value.  
DS7915 Ver1.4 Apr. 2008  
5
EUP7915  
Typical Operating Characteristics  
OUTPUT VOLTAGE ACCURACY vs. LOAD CURRENT  
OUTPUT VOLTAGE vs. INPUT VOLTAGE  
3.0  
0.4  
2.5  
0.2  
0.0  
IOUT=0mA  
2.0  
1.5  
1.0  
-0.2  
-0.4  
IOUT=120mA  
0.5  
0.0  
0
20  
40  
60  
80  
100  
120  
0
1
2
3
4
5
6
LOAD CURRENT (mA)  
INPUT VOLTAGE (V)  
OUTPUT VOLTAGE ACCURACY vs. TEMPERATURE  
DROPOUT VOLTAGE vs. LOAD CURRENT  
0.8  
120  
80  
40  
0
(VOUT=2.5V, Dropout Voltage=VIN-VOUT  
Temp=85oC  
Temp=25oC  
)
IOUT=1mA  
0.4  
0.0  
-0.4  
-0.8  
Temp=-40oC  
-40  
-15  
10  
35  
60  
85  
0
20  
40  
60  
80  
100  
120  
Temperature (oC)  
LOAD CURRENT (mA)  
GROUND CURRENT vs. LOAD CURRENT  
GROUND CURRENT vs. INPUT VOLTAGE  
IOUT=120mA  
200  
160  
120  
80  
200  
160  
120  
80  
Vin=5.5V  
Vin=3.3V  
IOUT=0mA  
40  
40  
0
0
0
20  
40  
60  
80  
100  
120  
0
1
2
3
4
5
6
LOAD CURRENT (mA)  
INPUT VOLTAGE (V)  
DS7915 Ver1.4 Apr. 2008  
6
EUP7915  
GROUND CURRENT vs. TEMPERATURE  
120  
100  
80  
60  
40  
20  
0
-40 -20  
0
20 40 60 80 100 120 140  
TEMPERATURE (oC)  
DS7915 Ver1.4 Apr. 2008  
7
EUP7915  
DS7915 Ver1.4 Apr. 2008  
8
EUP7915  
Application Note  
capacitance can drop by more than 50% as the  
temperature goes from 25°C to 85°C. Therefore, X7R  
is recommended over Z5U and Y5V in applications  
where the ambient temperature will change  
significantly above or below 25°C.  
External Capacitors  
Like any low-dropout regulator, the EUP7915 requires  
external capacitors for regulator stability. The  
EUP7915 is specifically designed for portable  
applications requiring minimum board space and  
smallest components. These capacitors must be  
correctly selected for good performance.  
Noise Bypass Capacitor  
Connecting a 0.01µF capacitor between the CBYPASS  
pin and ground significantly reduces noise on the  
regulator output. This cap is connected directly to a  
high impedance node in the bandgap reference circuit.  
Any significant loading on this node will cause a  
change on the regulated output voltage. For this reason,  
DC leakage current through this pin must be kept as  
low as possible for best output voltage accuracy. The  
types of capacitors best suited for the noise bypass  
capacitor are ceramic and film.  
Input Capacitor  
An input capacitance of 1µF is required between the  
EUP7915 input pin and ground (the amount of the  
capacitance may be increased without limit).  
This capacitor must be located a distance of not more  
than 1cm from the input pin and returned to a clean  
analog ground. Any good quality ceramic, tantalum, or  
film capacitor may be used at the input.  
If a tantalum capacitor is used at the input, it must be  
guaranteed by the manufacturer to have asurge current  
rating sufficient for the application.  
Unlike many other LDO’s, addition of a noise  
reduction capacitor does not effect the load transient  
response of the device.  
There are no requirements for the ESR on the input  
capacitor, but tolerance and temperature coefficient  
must be considered when selecting the capacitor to  
ensure the capacitance will be 1µF over the entire  
operating temperature range.  
Adjustable Operation  
The adjustable version of the EUP7915 has an output  
voltage range of 1.2V to 5.3V. The output voltage of  
the EUP7915 adjustable regulator is programmed  
using an external resistor divider as shown in Figure 5.  
The output voltage is calculated using:  
Output Capacitor  
The EUP7915 is designed specifically to work with  
very small ceramic output capacitors. A ceramic  
capacitor (temperature characteristics X7R, X5R, Z5U,  
or Y5V) in 1 to 22µF range with 5mto 500mESR  
range is suitable in the EUP7915 application circuit.  
The output capacitor must meet the requirement for  
minimum amount of capacitance and also have an  
ESR (Equivalent Series Resistance) value which is  
within a stable range (5mto 500m)  
R
R
1
V = V ×(1+  
)
O
ref  
2
Where:  
Vref= 1.2V typ. (the internal reference voltage)  
Utilize the following equation for adjusting the output  
to a particular voltage:  
No-Load Stability  
The EUP7915 will remain stable and in regulation  
with no external load. This is specially important in  
CMOS RAM keep-alive applications.  
V
1.2V  
O
R1 = R2  
1  
Capacitor Characteristics  
Choose R2=50k to optimize accuracy, power supply  
rejection, noise and power consumption.  
The EUP7915 is designed to work with ceramic  
capacitors on the output to take advantage of the  
benefits they offer: for capacitance values in the range  
of 1µF to 4.7µF range, ceramic capacitors are the  
smallest, least expensive and have the lowest ESR  
values (which makes them best for eliminating high  
frequency noise). The ESR of a typical 1µF ceramic  
capacitor is in the range of 20mto 40m, which  
easily meets the ESR requirement for stability by the  
EUP7915.  
The ceramic capacitor’s capacitance can vary with  
temperature. The capacitor type X7R, which operates  
over a temperature range of -55°C to +125°C, will  
only vary the capacitance to within ±15%. Most large  
value ceramic capacitors ( 2.2µF) are manufactured  
Figure5. Adjustable Regulator with Resistors  
with Z5U or Y5V temperature characteristics. Their  
DS7915 Ver1.4 Apr. 2008  
9
EUP7915  
On/Off Input Operation  
The EUP7915 is turned off by pulling the VEN pin low,  
and turned on by pulling it high. If this feature is not  
used, the VEN pin should be tied to VIN to keep the  
regulator output on at all time. To assure proper  
operation, the signal source used to drive the VEN  
input must be able to swing above and below the  
specified turn-on/off voltage thresholds listed in the  
Electrical Characteristics section under VIL and VIH.  
Fast Start up  
The EUP7915 output starts up after Vref voltage  
reaches its final value (1.2V nomial). The start-up time  
is determined by the time constant of the bypass  
capacitor. The smaller the capacitor value., the shorter  
the start-up time, but less noise gets reduced. As a  
result, start-up time and noise reduction need to be  
taken into design consideration when choosing the  
value of the bypass capacitor.  
DS7915 Ver1.4 Apr. 2008  
10  
EUP7915  
Packaging Information  
SOT23-5  
MILLIMETERS  
INCHES  
SYMBOLS  
MIN.  
-
MAX.  
1.30  
0.15  
MIN.  
-
MAX.  
A
A1  
D
0.052  
0.006  
0.00  
0.000  
2.90  
1.60  
0.114  
0.063  
E1  
E
2.60  
0.30  
0.30  
3.00  
0.60  
0.50  
0.102  
0.012  
0.012  
0.118  
0.024  
0.020  
L
b
e
0.95  
0.037  
DS7915 Ver1.4 Apr. 2008  
11  
配单直通车
EUP7917-12VIR1产品参数
型号:EUP7917-12VIR1
生命周期:Contact Manufacturer
IHS 制造商:EUTECH MICROELECTRONICS INC
包装说明:,
Reach Compliance Code:unknown
风险等级:5.56
Base Number Matches:1
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