FAN7300G View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

FAN7300G

LCD Back Light Inverter Drive IC

Fairchild Semiconductor 

FAN7300

Internal Block Diagram

VZ

Vcc

ENA

5.4V

UVLO

+

-

Vz

Internal

Bias

1.5Vref

8V

VS

S_S

EA_IN

Vm2

-

+

1.5V

Vz

8uA

+

Va

+

-

Error Amp.

Buffer

Multiplier

Gain

K

Vmo

Vm1

EA_OUT

OLR

3V

COMP3

+

-

Va

E/A

Controller

Current

Generator

-

COMP1

RQ

+

SQ

max. 1.75V

Clock

Main Control

Oscillator

min. 0.25V

COMP2

max. 1.75V

min. 0.25V

Vb

Dimming control and Mode Selection

DIM

Analog

Burst

Mixed

3V

RS

Q

COMP6

COMP7

V3

SCP

3V

Vz

3.7V

3.7V

3V

2uA

OLP

COMP4

COMP5

1.5V

1.5V

High side

gate driver

Low side

gate driver

CPUMP

OUT_H

OUT_L

GND

Rt

Ct

V3

50K

50K

BCt

DIM_MODE

2

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