FAN6300SY datasheet(2/14 Pages) FAIRCHILD

Part #	FAN6300SY

Description	High-Voltage Startup, Quasi-Resonant Operation

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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FAN6300 • Rev. 1.0.3

2

Application Diagram

Figure 1. Typical Application

Internal Block Diagram

CS

8

6

2

3

1

4

7

5

0.3V

DRV

GND

VDD

Two Steps

UVLO

16V/10V/8V

Internal

Bias

Latched

18V

GATE

DET

FB

NC

HV

Latched

4.2V

2R

R

Soft-Start

2ms

PWM

Current Limit

IDET

Internal

OTP

Latched

S/H

Blanking

Circuit

tOFF-MIN

(8µs/38µs)

IDET

5V

DET OVP

2.5V

tOFF

Blanking

(4µs)

Q

SET

CLR

S

R

FB OLP

Timer

55ms

Over-Power

Compensation

VDET

Starter

500µs

30µs

Latched

Valley

Detector

0.3V

27V

OVP

VDET

IHV

1st

Valley

tOFF-MIN

+9µs

Figure 2. Functional Block Diagram

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FAN6300SY Datasheet(PDF) 2 Page - Fairchild Semiconductor

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