NCP5322A datasheet(9/31 Pages) ONSEMI

Part #	NCP5322A

Description	Two?뭁hase Buck Controller with Integrated Gate Drivers and 5?묪it DAC

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NCP5322A

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9

PACKAGE PIN DESCRIPTION (continued)

PACKAGE PIN #

FUNCTION

PIN SYMBOL

SO−28L

FUNCTION

PIN SYMBOL

13

ILIM

Sets threshold for current limit. Connect to reference through

a resistive divider. This pin’s maximum working voltage is

1.3 Vdc.

14

REF

Reference output. Decouple with 0.1

mF to LGND.

15

VCCH2

Power for GATE(H)2.

16

GATE(H)2

High side driver #2.

17

GND2

Return for #2 drivers.

18

GATE(L)2

Low side driver #2.

19

VCCL2

Power for GATE(L)2.

20

SS

Soft Start capacitor pin. The Soft Start capacitor controls

both Soft Start time and hiccup mode frequency. The COMP

pin is clamped below Soft Start during Start−Up and hiccup

mode.

21

LGND

Return for internal control circuits and IC substrate connection.

22

VCCH1

Power for GATE(H)1. UVLO Sense for High Side Driver sup-

ply connects to this pin.

23

GATE(H)1

High side driver #1.

24

GND1

Return #1 drivers.

25

GATE(L)1

Low side driver #1.

26

VCCL1

Power for GATE(L)1.

27

VCCL

Power for internal control circuits. UVLO Sense for Logic

connects to this pin.

28

ROSC

A resistor from this pin to ground sets operating frequency

and VFB bias current.

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