ACT3780

Rev 8, 09-Jul-13

- 3 -

www.active-semi.com

Copyright © 2013 Active-Semi, Inc.

Active-Semi Proprietary―For Authorized Recipients and Customers

ActivePath

PIN DESCRIPTIONS

PIN

NAME

DESCRIPTION

1

nACOK

within it's valid operating range.

2

nBLV1

Battery Voltage level Monitor Output 1. Open-drain output that sinks current when asserted.

Connect a 10k or greater pull-up resistors between nBLV1 and a suitable voltage supply. See

Battery Voltage Level Indication

Section for more information.

3

nBLV2

Battery Voltage level Monitor Output 2. Open-drain output that sinks current when asserted.

Connect a 10k or greater pull-up resistors between nBLV2 and a suitable voltage supply. See

Battery Voltage Level Indication

Section for more information.

4

nSTAT3

than OVP threshold 6.9V (typ) while battery is present. For a logic-level charge status indicator,

simply connect a 10k or greater pull-up resistor between nSTAT3 and a suitable voltage supply.

5

nSTAT1

Charge State Indicator. Open-drain output with an internal 6mA current limit, allowing this pin

to directly drive an indicator LED. For a logic-level charge status indicator, simply connect a

10k or greater pull-up resistor between nSTAT1 and a suitable voltage supply. See the

Charging Status Indication

Section for more information.

13

G

Ground.

7

CHG_IN

Power Input. Bypass to G with a high quality ceramic capacitor placed as close to the IC as

possible.

8, 9

BAT

Battery Charger output. Connect this pin to the positive terminal of the battery. Bypass to G

with a high quality ceramic capacitor placed as close to the IC as possible.

10

CHGLEV

Charging State Select Input. Drive CHGLEV to VSYS or to a logic high for high-current

charging mode or drive to G or a logic low for low-current charging mode. See the ACIN and

CHGLEV Inputs

section for more information.

11

EN

EN Charger Enable Input. Drive to a logic high to enable IC, drive to a logic low to disable the

device and enter suspend mode.

12

ISET

Charge Current Set Input. Connect a resistor from ISET to G to set the fast-charge current.

14

ACIN

AC Adaptor Detect Logic Input. Detects presence of a wall adaptor and automatically adjusts

the charge current to the maximum charge current level. See the ACIN and CHGLEV Inputs

section for more information.

15

TH

Temperature Sensing Input. Connect to battery thermistor terminal. See the Battery

Temperature Monitoring

section for more information.

16

DCCC

Dynamic Control of Charging Current Set Input. Connect a resistor from DCCC to G to set the

DCCC voltage. See the Dynamic Charge Current Control section for more information.

17

BTR

Safety Timer Programming Input. Connect a resistor from BTR to G to set the safety timers. Do

not leave this pin floating. See the Charging Safety Timers Section for more information.

18, 19,

20

SYS

System Power Output. Bypass to G with a high quality ceramic capacitor placed as close to the

IC as possible.

EP

Exposed Pad. Must be soldered to ground on the PCB.

6

nSTAT2

Charge State Indicator. Open-drain output with an internal 6mA current limit, allowing this pin

to directly drive an indicator LED. For a logic-level charge status indicator, simply connect a

10k or greater pull-up resistor between nSTAT2 and a suitable voltage supply. See the

Charging Status Indication

Section for more information.