FAN7602M 查看數據表（PDF） - Fairchild Semiconductor

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FAN7602M

Green Current Mode PWM Controller

Fairchild Semiconductor 

Pin Assignments

Vstr

NC

VCC

OUT

8

7

6

5

FAN7602

YWW

1

LUVP

2

Latch/

Plimit

3

CS/FB

4

GND

FAN7602 Rev. 03

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin Number

1

2

3

4

5

6

7

8

Pin Name

LUVP

Latch/Plimit

CS/FB

GND

OUT

VCC

NC

Vstr

Pin Function Description

Line Under-Voltage Protection Pin. This pin is used to protect the set when the

input voltage is lower than the rated input voltage range.

Latch Protection and Power Limit Pin. When the pin voltage exceeds 4V, the latch

protection works. The latch protection is reset when the VCC voltage is lower than 5V.

For the power limit function, the Over-Current Protection (OCP) level decreases as

the pin voltage increases.

Current Sense and Feedback Pin. This pin is used to sense the MOSFET current

for the current mode PWM and OCP. The output voltage feedback information and

the current sense information are added using an external RC filter.

Ground Pin. This pin is used for the ground potential of all the pins. For proper oper-

ation, the signal ground and the power ground should be separated.

Gate Drive Output Pin. This pin is an output pin to drive an external MOSFET. The

peak sourcing current is 450mA and the peak sinking current is 600mA. For proper

operation, the stray inductance in the gate driving path must be minimized.

Supply Voltage Pin. IC operating current and MOSFET driving current are supplied

using this pin.

No Connection.

Start-up Pin. This pin is used to supply IC operating current during IC start-up. After

start-up, the internal JFET is turned off to reduce power loss.

© 2006 Fairchild Semiconductor Corporation

FAN7602 Rev. 1.0.2

3

www.fairchildsemi.com

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