ACT8849 datasheet(6/35 Pages) ACTIVE-SEMI

6 / 35 page

ACT8849

Rev PrB, 12-Jun-14

Innovative PowerTM

- 6 -

www.active-semi.com

Active-Semi Confidential―Do Not Copy or Distribute

ActivePMU

TM is a trademark of Active-Semi.

I2CTM is a trademark of NXP.

PIN DESCRIPTIONS CONT’D

NAME

DESCRIPTION

SW4

Switch Node for REG4.

GP14

Power Ground for REG1 and REG4. Connect GP14, GP2, GP3, and GA together at a single

point as close to the IC as possible.

SW1

Switch Node for REG1.

OUT1

Output Voltage Sense for REG1.

VP1

Power Input for REG1. Bypass to GP14 with a high quality ceramic capacitor placed as close

to the IC as possible.

nPBIN

Master Enable Input. Drive nPBIN to GA through a 50kΩ resistor to enable the IC, drive

nPBIN directly to GA to assert a Manual-Reset condition.

PWRHLD

Power hold Input. PWRHLD is internally pulled down to GA through a 900kΩ resistor.

nRSTO

Configured as Power Enable Pin for REG2, REG6, REG7 and REG11.

nIRQ

Open-Drain Interrupt Output.

GPIO6

General Purpose I/O #6. Configured as REG3 Output Power-OK Status.

GPIO5

General Purpose I/O #5. Configured as Power Enable Pin for REG1.

OUT13

REG13 output. Bypass it to ground with a 2.2µF capacitor.

OUT7

REG7 output. Bypass it to ground with a 2.2µF capacitor.

GPIO4

General Purpose I/O #4. Configured as Power Enable Pin for REG5.

OUT6

REG6 output. Bypass it to ground with a 2.2µF capacitor.

INL1

Power Input for REG5, REG6, REG7.

OUT5

REG5 output. Bypass it to ground with a 2.2µF capacitor.

GPIO3

General Purpose I/O #3. Configured as Power Enable Pin for REG4.

GPIO2

General Purpose I/O #2. Configured as VSELR1 for Voltage Selection of REG1. Drive to

logic low to select default output voltage. Drive to logic high to select secondary output

voltage.

GPIO1

General Purpose I/O #1. Configured as VSELR3 for Voltage Selection of REG3. Drive to

logic low to select default output voltage. Drive to logic high to select secondary output

voltage.

OUT3

Output Voltage Sense for REG3.

47,48

VP3

Power input for REG3. Bypass to GP3 with a high quality ceramic capacitor placed as close

to the IC as possible.

Exposed Pad. Must be soldered to ground on PCB.

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