3513

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 11

www.unisonic.com.tw

QW-R502-129.B

PIN ASSIGNMENT

PIN DESCRIPTIONS

PIN NO

PIN NAME

TYPE

DESCRIPTION

1

PGI

Input

Power Good Input. For ATX SMPS, it detects AC line voltage through the

main transformer.

2

GND

Supply

Ground

3

FPOB

Output

Fault Protection Output. Output signal to control the primary PWM IC through

an opto-coupler. When FPOB is low, the PWM IC is enabled.

4

PSONB

Input

Remote On/Off logic input from CPU or main-board. The power supply will be

turned on/off after 38mS delay.

5

OTP/FC

Input

Over temperature protection/Fan speed control

6

RI

Input

Reference setting. One external resistor Ri connected between RI and GND

7

Input

12V over/under voltage protection.

8

Input

12V over current protection.

8

Output

Pulse width modulation.

9

Input

12V over current protection.

9

Input

12V over current protection.

10

Input

12V over/under voltage protection.

11

Input

3.3V over current protection

12

Input

3.3V over/under voltage protection

13

Input

5V over current protection.

14

Input

5V over/under voltage protection.

15

Supply

Power supply.

16

PGO

Output

Power good logic output, 0 or 1(open-drain). Power good=1 means that the

power supply is good for operation. The power good delay is 300mS.

* 3513E only

** 3513F only