KA7526 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

KA7526

Power Factor Correction Controller

Fairchild Semiconductor 

KA7526

Internal Block Diagram

VCC

8

5V

+

36V

-

13V

UVLO

Idet 5

+ 240mV

7.5V

-

1.8V

Zero Current

Detector

40kΩ

CS 4

-

8pF

+ Current Sense

Comparator

2.5V Ref

Internal

Bias

Timer R

Q

S

R

VCC

Drive

Output

7 OUT

Over Voltage

Protection

+

-

1.8V

Vref

1.65V

MULT 3

Vm1

Vmo

0~3.8V

Multiplier

-+

Pin4 Threshold(Vmo)

K = Vm1 ⋅ (Vm2-Vref)

6

GND

+

Vm2

-

Vref~Vref+2V

2

EA OUT

Vref

Vea(-)

Error Amp

1 INV

IC Characteristics

Parmaeter

UVLO

Multiplier Input Range (Vm1)

Multiplier Input Range (Vm2)

Maximum Current Sense Voltage

KA7526

8/13V

0 ~ 3.8V

Vref ~ Verf + 2V

1.65V

2

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