ACT5880 datasheet(10/87 Pages) ACTIVE-SEMI

10 / 87 page

ACT5880

Rev 2, 03-Sep-13

- 10 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

I2CTM is a trademark of NXP.

Active-Semi Confidential―Do Not Copy or Distribute

PIN DESCRIPTIONS

NAME

DESCRIPTION

VALIVE

The Always-On Low Power LDO Output. Bypass to GA with a 1μF high quality ceramic capacitor.

AUX0

The Auxiliary ADC Input AUX0.

The Ground Node of the ADC Circuit in the IC.

XPOS

One of ADC Input, Internally Configured as the Touch Screen Force-Sense Node XPOS with an

internal force switch.

CLK32

The 32kHz Oscillation Output, OD. A pull-up resistor at load end in range of 150kΩ to 300kΩ is

recommended.

VP1

The Switch Power Input Node of the Step-down DC/DC REG1. Same function as pin H2.

OUT1

The Step-down DC/DC REG1 Feedback Node. Connect it to the output node of REG1.

XTAL-

The 32kHz Oscillator Crystal Node. This node is pick-up node. Connect it to any terminal of an

external crystal.

XTAL+

The 32kHz Oscillator Crystal Node. This node is driving node. Connect it to any terminal of an

external crystal.

VBBAT

The Back-up Battery Node. Connect it to the positive node of a back-up battery or storage super cap.

The back-up battery charger circuit charges battery or super cap at this node with limited current

and outputs a programmable voltage after charging for powering the always-on low power LDO.

AUX1

The Auxiliary ADC Input AUX1.

BBCIN

The Back-up Battery Charger Circuit Input. Bypass to GA with a 1μF high quality ceramic capacitor.

AUX2

The Auxiliary ADC Input AUX2.

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