CS5166

http://onsemi.com

7

PACKAGE PIN DESCRIPTION

PACKAGE PIN #

PIN SYMBOL

FUNCTION

SO−16L

1, 2, 3, 4, 6

Amp reference voltage is 1.325 V to 2.075 V with 50 mV increments.

5

SS

Soft Start Pin. A capacitor from this pin to LGND sets the Soft Start and fault timing.

7

Off−Time Capacitor Pin. A capacitor from this pin to LGND sets both the normal and

extended off time.

8

Current Sense Comparator Inverting Input.

9

Input Power Supply Pin.

10

GATE(H)

High Side Switch FET driver pin.

11

PGND

High current ground for the GATE(H) and GATE(L) pins.

12

GATE(L)

Low Side Synchronous FET driver pin.

13

PWRGD

14

LGND

Reference ground. All control circuits are referenced to this pin.

15

COMP

Error Amp output. PWM Comparator reference input. A capacitor to LGND provides Error

Amp compensation.

16

Error Amp, PWM Comparator feedback input, Current Sense Comparator Non−Inverting

input, and PWRGD Comparator input.