FAN7554 Ver la hoja de datos (PDF) - Fairchild Semiconductor

Número de pieza

componentes Descripción

Fabricante

FAN7554

Versatile PWM Controller

Fairchild Semiconductor 

FAN7554

Internal Block Diagram

Vref

100uA

S/S 2

0.3V

3.5V

1k 1.5V

Rt/Ct

Vref

4

8

SR

Q

off

PWR

/

Vref

on SAVE

OSC

CLK

FB 1

1mA

Vref

Vcc

5uA

OLP

MAX. 1V

2R

R

6V

OVP-out

OCL-out

PWM

S

Q

R

Offset(0.1V)

UVLO-out

S

Q

R

OVP

UVLO

Vcc

7

34V

15V/9V

14V

6 OUT

3 IS

OCL

2V

5 GND

Absolute Maximum Ratings

( Ta = 25°C, unless otherwise specified )

Parameter

Supply Voltage

Output Current

Input Voltage to FB Pin

Input Voltage to IS Pin

Power Dissipation at TA ≤ 25°C

8-DIP

8-SOP

Operating Temperature

Storage Temperature

Thermal Resistance, Junction-to-Air (Note1)

8-DIP

8-SOP

Symbol

Vcc

IO

VFB

VIS

PD

TOPR

TSTG

Rθja

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

Value

30

±1

-0.3 to VSD

-0.3 to VOC

0.85

0.42

-25 to +85

-55 to +150

147.8

291.4

Unit

V

A

V

V

W

°C

°C

°C/W

2

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