FAN7554现货热卖使用介绍供应商报价哪里找芯片批发报价-中国IC网-芯三七

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产品型号FAN7554的概述

芯片FAN7554的概述 FAN7554是一个用于电源管理的高性能电感式DC-DC稳压转换器芯片，由Fairchild Semiconductor（现为ON Semiconductor的一部分）设计和生产。它具有高效率、出色的负载瞬态响应能力以及多种保护功能，广泛应用于计算机、通信设备及消费电子领域。该芯片的主要特点是集成了PWM（脉宽调制）控制，支持多种工作模式，并且具备高达92%的转换效率，使其在电源系统中能够有效减少能量损耗。芯片FAN7554的详细参数 FAN7554的主要技术参数包括输入电压范围、输出电压范围、输出电流、开关频率等。具体参数如下： - 输入电压范围：4.5V到30V - 输出电压调整范围：从0.8V到规设计的最大输出电压，通常可调 - 输出电流：最大可达2A - 开关频率：典型值为400kHz - 效率：高达92% - 工作环境温度：-40°C到+125°C...

产品型号FAN7554的Datasheet PDF文件预览

www.fairchildsemi.com

FAN7554

Versatile PWM Controller

Features

Description

• Current Mode Control

The FAN7554 is a fixed frequency current mode PWM

controller. It is specially designed for off-line and DC to DC

converter applications with minimal external components.

These integrated circuits feature a trimmed oscillator for

precise duty cycle control, a temperature compensated

reference, an ON/OFF control, a high gain error amplifier, a

current sensing comparator, and a high current totem-pole

output. The FAN7554 has various protection functions such

as an over load protection, an over current protection, and

the over voltage protection, which include built-in auto

restart circuit. The FAN7554 is available in the 8-DIP

package as well as the 8-SOP package.

• Pulse by Pulse Current Limiting

• Low External Components

• Under Voltage Lockout(UVLO): 9V/15V

• Stand-by Current: Typ. 100uA

• Power Saving Mode Current: Typ. 200uA

• Operating Current: Typ. 7mA

• Soft Start

• On/Off Control

• Over Load Protection(OLP)

• Over Voltage Protection(OVP)

• Over Current Protection(OCP)

• Over Current Limit(OCL)

• Operating Frequency up to 500kHz

• 1A Totem-Pole Output Current

8-DIP

Applications

• Off-Line & DC-DC Converter

8-SOP

Rev. 1.0.2

FAN7554

Internal Block Diagram

Rt/Ct

Vcc

Vref

OVP

3.5V

34V

off

UVLO

Vref

PWR

SAVE

Vref

100

S/S

15V/9V

1.5V

0.3V

OSC

CLK

14V

OUT

PWM

MAX. 1V

1mA

Vref

Vcc

Offset(0.1V)

UVLO-out

I S

5uA

OCL

OLP

OVP-out

OCL-out

GND

Absolute Maximum Ratings

( Ta = 25°C, unless otherwise specified )

Parameter

Symbol

Value

Unit

Supply Voltage

Vcc

±1

Output Current

Input Voltage to FB Pin

Input Voltage to IS Pin

-0.3 to V

Power Dissipation at T ≤ 25°C

8-DIP

8-SOP

0.85

0.42

Operating Temperature

Storage Temperature

-25 to +85

°C

OPR

-55 to +150

STG

Thermal Resistance, Junction-to-Air (Note1)

8-DIP

8-SOP

Rθja

147.8

291.4

°C/W

Note:

1. Junction -to -air thermal resistance test environments.

-. Pneumatic heat sink fixture.

-. Clamping pressure 60psi through 12mm diameter cylinder.

-. Thermal grease applied between PKG and heat sink fixture

FAN7554

Temperature Characteristics

( -25°C ≤ Ta ≤ 85°C )

Parameter

Symbol

Value

±0.5

±5

Unit

Vref Temperature Stability

Fosc Temperature Stability

∆V

REF

∆F

OSC

PIN Array

Vref

Vcc

OUT

GND

YWW

F AN7 5 5 4

Rt/Ct

S/S

PIN Definitions

Pin Number

Pin Name

Pin Function Description

Inverting(-) Input of PWM Comparator, ON/OFF Control & OLP Sensing

Terminal.

S/S

Soft Start

Non-Inverting(+) Input of PWM Comparator, OCL Sensing Terminal

Rt/Ct

GND

OUT

Vcc

Oscillator Time Constant(Rt/Ct)

Ground

Output of Gate Driver

Power Supply

Vref

Output of 5V Reference

FAN7554

Electrical Characteristics

(Ta = 25°C, Vcc=16V, Rt=10kΩ, Ct=3.3nF unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

< REFERENCE SECTION >

Reference Output Voltage

Line Regulation

∆V

T =25°C , Iref =1mA

4.90

5.00

5.10

REF

Vcc =12V ~ 25V

REF1

REF2

Load Regulation

Iref =1mA ~ 20mA

Short Circuit Output Current

< OSCILLATOR SECTION >

Oscillation Frequency

Frequency Change with Vcc

Ramp High Voltage

T = 25°C

0.1

0.18

T = 25°C

0.05

2.8

1.2

1.0

kHz

OSC

∆F

Vcc = 12V ~ 25V

OSC1

Ramp Low Voltage

Discharge Current

Idisch

= 3.3V

6.1

9.4

RT/CT

< PWM SECTION >

Sense Threshold Voltage

Feedback Threshold Voltage

Feedback Source Current

Max. Duty Cycle

= 5V

0.8

0.2

1.0

0.3

1.0

1.2

0.4

TH(IS)

= 0V

= 0V, V

TH(FB)

= 5V

S/S

(MAX)

Min. Duty Cycle

(MIN)

< PROTECTION SECTION >

Shutdown Delay Current

Shutdown Feedback Voltage

Over Current Protection

Over Voltage Protection

< ON/OFF CONTROL SECTION >

Off Mode Sink Current

Off Threshold Voltage

< SOFT-START SECTION >

Soft Start Current

4V ≤ V ≤ V

3.5

5.4

1.6

6.5

6.6

2.4

> 5V

> 1.5V, ton > 500nS

OVP

< V

, V

= 5V

SINK

TH(FB) S/S

1.2

1.5

1.8

OFF

TH(FB)

= 5V, V

S/S

= 0V

1.1

5.2

S/S

Soft Start Limit Voltage

Low Output Voltage1

High Output Voltage1

Low Output Voltage2

High Output Voltage2

Rising Time (Note1)

Vcc = 16V

LIM(S/S)

= 18V, I = 50mA

0.15

0.4

2.5

OL1

= 18V, I = -50mA

OH1

= 18V, I = 200mA

1.5

OL2

Vcc = 18V, Io = -200mA

T = 25°C, C = 1nF

OH2

Falling Time (Note1)

T = 25°C, C = 1nF

Start Threshold Voltage

Min. Operating Voltage

13.2

8.2

16.2

10.2

TH(ST)

OPR(M)

FAN7554

Electrical Characteristics ^(Continued)

(Ta = 25°C, Vcc=16V, Rt =10kΩ, Ct = 3.3nF unless otherwise specified)

Parameter

Symbol

Conditions

Min. Typ. Max. Unit

Start-up Current

0.1

0.2

Operating Supply Current

Off State Current

,V <V

FB TH(FB) S/S OFF

0.2

0.4

OFF

Note:

1. These parameters, although guaranteed, are not 100% tested in production.

FAN7554

Typical Perfomance Characteristics

[ Ct vs Dea d tim e ]

[ Rt vs. Freqency ]

100.000

10.000

1.000

10000.0

1000.0

0.33n

1.1n

100.0

3.3n

11n

10K

20K

50K

100K

10.0

33n

1.0

0.1

0.100

100

0.1

100

Ct[ nF]

Rt[ Kohm]

Figure 1. Rt vs. Frequency

Figure 2. Ct vs. Dead Time

[ Cloa d vs Tr & Tf ] 50Khz,95% duty

[ Ct vs Duty ]

800

700

600

500

400

300

200

100

95.0

85.0

75.0

65.0

55.0

45.0

35.0

25.0

15.0

10K

20K

50K

100K

0.1

100

Ct [ nF]

Cloa d [ nF]

Figure 3. Ct vs. Duty

Figure 4. Cload vs. Tr & Tf

FAN7554

Typical Performance Characteristics^(Continued)

Figure 6. Temperature vs. Operating Supply Current

Figure 5. Temperature vs. Start-up Current

Figure 7. Temperature vs. Reference Voltage

Figure 8. Temperature vs. Oscillation frequency

Figure 10. Temperature vs. Min. Operating Voltage

Figure 9. Temperature vs. Start Threshold Voltage

FAN7554

Operation Description

The FAN7554 has all the basic features of the current mode SMPS control IC. Its basic configuration includes the UVLO with

6V hysteresis, a band gap reference, the oscillator that can oscillate up to 500kHz according to R /C (connected externally), a

PWM logic circuit , a gate driver, and the feedback circuit that has the current source and soft start function. The FAN7554 has

various functions such as an over load protection, an over current protection, and an over voltage protection. The over load

protection forces the FAN7554 to stop its operation if the load current is higher than the preset value. The protection circuit

can also be prevented from operating during transient states by ensuring that a certain amount of the time passes before the

protection circuit operates. The shutdown circuit is configured for an auto-restart, so the FAN7554 automatically restarts when

Vcc drops to 9V (stop voltage).

Start-Up

The start-up circuit is made up of an under voltage lock out (UVLO), the protection for low voltage conditions, and the 5V

reference (V ), which supplies bias voltage to the control circuit after start-up. The start voltage of the UVLO is 15V , and

ref

the stop voltage after turn on is 9V. It has a 6V hysteresis. The minimum operating current for start-up threshold is typically

100uA, and this can reduce the power dissipation on the start-up resistor. The Vref is composed of the band gap reference

circuit with its superior temperature characteristics and supplies power to all the FAN7554 circuits and R /C , with the

exceptions of the ULVO circuit and ON/OFF control circuit.

DC Link

Icc(mA)

7.0

VCC

UVLO

Internal bias

Good logic

Vref

0.01

15V/9V

Vcc (V)

FAN7554

Figure 11. Low Current Start-Up & Bandgap Reference Circuit

Figure 12. Start-Up & Circuit Characteristics

Soft Start

The SMPS output load usually contains a capacitive load component. During initial start-up, the output voltage increases at a

fixed time constant because of this component. If the feedback loop, which controls the output voltage, was to start without

the soft start circuit, the feedback loop would appear to be open during initial start-up , so, at start-up, the feedback voltage

applied to the PWM comparator’s inverting input (-) reaches its maximum value(1V).

During this time, the peak value of the drain current would stay at the maximum value, and the maximum power would be

delivered to the secondary load side from the start. When the maximum power is delivered to the secondary side for this initial

fixed time, the entire circuit is seriously stressed. The use of a soft start can avoid such stresses. At start-up, the soft start

capacitor Cs is charged by 1mA and 100uA current sources.

The voltage of the inverting terminal of the PWM comparator increases to 1/3 of the Cs voltage at a fixed time constant.

Subsequently, the drain peak current is limited by the gradual increase in the Cs voltage and this causes the output voltage to

increase smoothly. When the Cs voltage becomes greater than 3V, the diode Ds turns off consequently, the feedback capacitor

Cfb is charged by 1mA and 5uA current sources. This charge voltage determines the comparator’s inverting voltage. Then, Cs

voltage charges to 5V by 100uA current source. The soft start capacitor Cs is discharged when the UVLO good logic starts, so

the soft start is repeated at re-start.

FAN7554

S/S

100uA

Output drive

1mA

Cfb

5uA

Vcc

FAN7554

Figure 13. Soft Start Circuit & Circuit Flow

Oscillator

As shown in figure14, the oscillator frequency is programmed by values selected for timing components Rt and C . Capacitor

C is charged to almost 2.8V through resistor Rt from the 5V reference and discharged to 1.2V by an internal current source.

The oscillator generates the clock signal while the timing capacitor C is discharged. The gate drive output becomes low during

the clock time. Rt and C selection determine the oscillator frequency and maximum duty cycle. Charge and discharge times

can be calculated through the equations below.

Charging time : tc = 0.55×R ×C

Discharging time : td = R ×C ×ln[(0.0063×R - 2.8) / (0.0063×R - 3.8)]

where the oscillator frequency : fosc = (tc + td)^-1(±10%)

When R > 5kΩ, fosc = 1 / (0.55×R ×C ) = 1.8 / (R ×C )

Vhigh(2.8V)

Vref

Sawtooth waveform

Clock

[ Rt > 5kΩ]

Vlow(1.2V)

Discharge

Gate Drive

Internal clock

Vhigh(2.8V)

Discharge

2.8V

/1.2V

Sawtooth waveform

Vlow(1.2V)

[ Rt < 5kΩ]

FAN7554

Internal clock

Figure 15. Sawtooth & Clock Waveform

Figure 14. Oscillator Circuit

FAN7554

Feedback

As shown in figure16, the internal oscillator clock turns on the MOSFET. The feedback comparator operates to turn it off

again, when the MOSFET current reaches a set value proportional to Vfb. The feedback capacitor Cfb is charged by the inter-

nal current sources , 1mA and 5uA, and is discharged by the secondary side photo-coupler to control the output voltage.

DRIN

OUT

OSC

2R Vfb/3

Vfb

1mA

5uA

Cfb

Vsense

Vcc

FAN7554

Figure 16. Feedback & PWM Circuit

Delayed Shutdown

During the normal operation, the feedback voltage is between 0~3V. If the output terminal overloads or an error happens to

the feedback loop, the delayed shutdown circuit operates. When the feedback voltage is less than 3V, the feedback capacitor is

charged by current sources, 1mA and 5uA; when the feedback voltage becomes greater than 3V, the capacitor is charged by the

5uA current source because diode D1 turns off. When the feedback voltage is less than 3V, the charge slope becomes an expo-

nential function and, when it is greater than 3V, the charge slope becomes linear. When the feedback voltage reaches almost

6V, the FAN7554 shuts down. The shut down circuit is configured for

auto-restart, so it automatically restarts when Vcc reaches the under voltage 9V.

DRIN

5uA

OUT

OSC

Vcc

1mA

Cfb

Over Current

Comparator

Shutdown

FAN7554

UVLO - out

Figure 17-A . Delayed Shutdown & Feedback Circuit

FAN7554

Vfb

Slope (dv/dt) = 5uA / Cfb

Shutdown start point

Figure 17-B . Delayed Shutdown & Feedback Waveform

Gate Driver

The gate drive circuit has the totem-pole output configuration. The output has 1A peak current and 200mA average current

drive ability.

DRAIN

Clock

OUT

Shutdown

FAN7554

Figure 18. Gate Drive Circuit

ON/OFF Control

The FAN7554 is able to use the feedback pin for ON/OFF control by placing NPN transistor between the cathode of the

KA431 and ground as shown in figure 19. When the transistor turns on, the current flows through the photo diode and

saturates the photo transistor. As a result, the feedback voltage is dropped to zero. When the feedback voltage is below 0.3V,

the soft start voltage starts to discharge by connecting the internal resistor 1kΩ in parallel with the external capacitor Cs. When

the soft start voltage becomes less than 1.5V, all the blocks in the FAN7554 are turned off , with the exceptions of the UVLO

block and ON/OFF control block. The operation current is about 200uA. So the stand-by power is reduced and SMPS

efficiency is improved. When the feedback voltage exceeds 0.3V, the FAN7554 normally operates by turning on Vref block.

FAN7554

VCC

Vref

3.5V

1.5V

100uA

UVLO

OFF

S/S

PWR

SAVE

Vref

15V/9V

1K Ω

0.3V

Good logic

Internal bias

Cfb

5uA

FAN7554

Vcc

Remote control

Figure 19. ON/OFF Control Circuit

Vref

Icc

4.5mA

0.2mA

V^S/S

Slope (dv/dt) = 100uA / Cs

Slope (dv/dt) = 1kΩ * Cs

Slope (dv/dt) = (1mA +100uA) / Cs

1.5V

Vfb

Slope (dv/dt) = (1mA +5A) / Cfb

OFF Signal

0.3~3V

Slope (dv/dt) = (5uA) / Cfb

ON Signal

0.3V

Normal State

OFF State

Figure 20. ON-OFF Control Circuit Waveforms

FAN7554

Protection Circuits

The FAN7554 has many built-in protection circuits that do not need additional components, providing reliability without cost

increase. These protection circuits have the auto-restart configuration. In this configuration, the protection circuits reset when

Vcc is below UVLO stop threshold (9V) and restarts when Vcc is above UVLO start threshold voltage (15V)

Over Voltage Protection

Abnormalities may occur in the SMPS secondary side feedback circuit. First, when the feedback pin is short to the ground, the

feedback voltage is zero and the FAN7554 is unable to start switching. Second, when the feedback circuit is open, the

secondary voltage generally becomes much greater than the rated voltage as the primary side continues to switch at the

maximum current level. This may cause the blowing off the fuse or, in serious cases, fires. It is possible that the devices

directly connected to the secondary output without a regulator could be destroyed. Even in these cases, the over voltage

protection circuit operates. Since Vcc is proportional to the output , in an over voltage situation, it also will increase. In the

FAN7554, the protection circuit operates when Vcc exceeds 34V. Therefore ,in normal operation, Vcc must be set below 34V.

Over Load Protection

An overload is the state in which the load is operating normally but in excess of the preset load. The overload protection circuit

can force the FAN7554 to stop its operation . The protection can also operate in transient states such as initial SMPS operation.

Because the transient state returns to the normal state after a fixed time, the protection circuit need not to operate during this

time. That is, the FAN7554 needs the time to detect and decide whether it is an overload condition or not. The protection

circuit can be prevented from operating during transient states by ensuring that a certain amount of time passes before the

protection circuit operates. The above operations are executed as follows: Since the FAN7554 adopts a current mode, it is

impossible for current to flow above a maximum level. For a fixed input voltage, this limits power. Therefore, if the power at

the output exceeds this maximum, Vo, shown in figure21, becomes less than the set voltage, and the KA431pulls in only the

given minimum current. As a result, the photo-coupler’s secondary side current becomes zero. The same goes for the

photo-coupler’s primary side current. Consequently, when the full current 1mA flows through the internal resistor

(2R + R = 3R), Vfb becomes approximately 3V and from that time, the 5uA current source begins to charge Cfb, the

photo-coupler’s secondary current is almost zero. The FAN7554 shuts down when Vfb reaches 6V.

Shutdown

UVLO out

OSC

Vfb

1mA

5uA

Cfb

Vcc

FAN7554

KA431

Shutdown start point

Time Constant = 3R * Cfb

5uA = (Cfb *3V)/t2

Figure 21. Delayed Shutdown

FAN7554

FAN7554 Flyback Converter Demo Circuit (Fsw:100kHz)

12V/3.5A

L201

D201

NTC

T101

R103

C102

R104

C104

R203

R204

C201

C202

R102

R101

D101

C103

C301 C302

LF101

R202

R201

IC301

C101

TNR

Q101

D102

R106

R105

R205 C203

IC201

FUSE

D103

R108

Vref Vcc OUT GND

R107

FAN7554 IC101

Input:85 ~ 265VAC

50/60Hz

FB S/S IS Rt/Ct

C109

R109

R110

R111

C105

C108

C106

C107

IC301

FAN7554

Part List For FAN7554 Flyback Converter Demo Board

Part

FUSE

NTC

Value

FUSE

Note

Part

Value

CAPACITOR

100nF/ 275V

470nF/ 400WV

103/ 1kV

104

Note

250 2A

NTC

C101

C102

C103

C104

C105

C106

C107

C108

C109

C201

C202

C203

C301

C302

Box Capacitor

Electrolytic

Film Capacitor

Ceramic

5D-11

RESISTOR

330kΩ

R101

R102

1uF/ 10V

101

Electrolytic

Ceramic

R103, R104

R105

100kΩ

22Ω

122

Ceramic

R106

4.7kΩ

12kΩ

22uF/ 50V

330uF

Electrolytic

Ceramic

R107

R108

10Ω

330uF

R109

1kΩ

104

R110

0.5Ω

R201

1kΩ

R202

1kΩ

R203

4.7kΩ

1.2kΩ

INDUCTOR

30mH

R204

LF101

L201

R205

6.4uH

MOSFET

FQP6N70

DIODE

Q101

Fairchild

D201

D101

D102

D103

MBRF10100CT

UF4007

Fairchild

IC101

IC201

IC301

FAN7554

KA431

Opto-coupler

Fairchild

1N4148

UF4004

Fairchild

G3SBA60

FAN7554

Transformer Specification

Schematic Diagram (Top view)

3mm

6mm

2mm

N12V

bottom

top

Winding Specification

No.

Pin(S → F)

1 → 3

Wire

Turns

Winding Method

0.35φ × 1

0.35φ × 4

0.35φ × 1

12V

7 → 11

1 → 3

5 → 4

Electrical Characteristic

Closure

1 - 3

Spec.

Remarks

Inductance

400uH ±10%

10uH MAX .

100kHz, 1V

^ndAll short

Leakagel

FAN7554

FAN7554 forward converter demo circuit ( fsw:100kHz)

L201

D201

+12V/2A

T101

R103

D102

R104

C104

C201

C202

R105

R106

C102

C103

C301 C302

D202

+5V/3A

L101

D103

R107

D104

L202

R201

C101

C105

C204

C203

R203

R101

R102

R202

IC2

R108

Q101

R110

FUSE

Vref Vcc OUT GND

R113

FAN7554

D101

C106

RT101

F/B S/S IS Rt/Ct

R109

Input: 85 ~ 265V^AC

50/60Hz

R112

R111

C110

C111

IC301

C107

C108 C109

R204

IC301

C205

IC201

FAN7554

Part List For FAN7554 Forward Converter Demo Board

Part

FUSE

RT101

Value

FUSE

Note

Part

Value

CAPACITOR

470nF/ 275V

470nF/ 400WV

223/ 630V

33uF/ 35V

104

Note

250 2A

NTC

C101

C102, C103

C104

Box Capacitor

Electrolytic

Film

DSC 10D-11

RESISTOR

330kΩ

C105

Film Capacitor

Ceramic

Electrolytic

Ceramic

Film

R101

R102

C106

C107

1uF/ 35V

101

R103, R104

R105, R106

R107

56kΩ

C108

220kΩ

10Ω

C109

122

C110

272

R108

20Ω

C111

333

Film

R109

4.7kΩ

C201, C202

C203

1000uF/ 35V

330uF/ 16V

2200uF/ 16V

104

Electrolytic

Ceramic

R110

1.2kΩ

R111

0.5Ω//0.5Ω//0.5Ω

1kΩ

C204

R112

C205

R113

12kΩ

C301, C302

332/ 1kV

INDUCTOR

30mH

R201, R202

R203

10kΩ

1kΩ

LF101

L201

R204

330Ω

MOSFET

SSH8N80

DIODE

Q101

Fairchild

D101

D102

D103

D201

D202

1N4004

FR157

IC101

IC201

IC301

FAN7554

KA431

Opto-Coupler

Fairchild

UF4007

MBRF10100CT

MBR3045PT

PBS406GU

FAN7554

Transformer specification

Schematic Diagram (Top view)

13, 14

Np ; 32turn

Ns,12 ; 5turn

Nvcc ; 6turn

Np ; 32turn

Ns,12 ; 5turn

Ns,5 ; 4turn

Np ; 32turn

8, 9

Ns,5 ; 4turn

Nvcc ; 5turn

10,11,12

Winding Specification

No.

Pin(S → F)

1 → 3

Wire

Turns

0.65 φ × 1

0.65 φ × 4

0.65 φ × 1

N , 5

8 → 11

4 → 9

N , 12

1 → 3

VCC

7 → 6

Core : Powder 27 pi 16grade

5V : 12T ( 1 φ × 2 )

12V : 27T ( 1.2 φ × 1 )

FAN7554

Mechanical Dimensions

Package

Dimensions in millimeters

8-SOP

FAN7554

Mechanical Dimensions ^(Continued)

Package

Dimensions in millimeters

8-DIP

FAN7554

Ordering Information

Product Number

FAN7554

Package

8-DIP

Operating Temperature

-25°C ~ 85°C

FAN7554D

8-SOP

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY

PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY

LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER

DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR

CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the body,

or (b) support or sustain life, and (c) whose failure to

perform when properly used in accordance with

instructions for use provided in the labeling, can be

reasonably expected to result in a significant injury of the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be

reasonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

8/21/02 0.0m 001

Stock#DSxxxxxxxx

2002 Fairchild Semiconductor Corporation

FAN7554相关文章

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FAN7554产品参数

型号:	FAN7554
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	ROCHESTER ELECTRONICS INC
零件包装代码：	DIP
包装说明：	DIP,
针数：	8
Reach Compliance Code：	unknown
风险等级：	5.66
Is Samacsys：	N
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：	12 V
标称输入电压：	16 V
JESD-30 代码：	R-PDIP-T8
JESD-609代码：	e3
长度：	9.2 mm
湿度敏感等级：	NOT APPLICABLE
功能数量：	1
端子数量：	8
最高工作温度：	85 °C
最低工作温度：	-25 °C
最大输出电流：	1 A
封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP
封装形状：	RECTANGULAR
封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT APPLICABLE
座面最大高度：	5.08 mm
表面贴装：	NO
切换器配置：	SINGLE
最大切换频率：	500 kHz
温度等级：	OTHER
端子面层：	MATTE TIN
端子形式：	THROUGH-HOLE
端子节距：	2.54 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT APPLICABLE
宽度：	7.62 mm
Base Number Matches：	1

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