ACT3704

Rev2, 26-Jul-07

- 2 -

www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

ORDERING INFORMATION

PART NUMBER

TEMPERATURE RANGE

PACKAGE

PINS

PACKING

ACT3704YH

-40°C to 85°C

SOP-8/EP

8

TUBE

ACT3704YH-T

-40°C to 85°C

SOP-8/EP

8

TAPE & REEL

ACT3704NH-T

-40°C to 85°C

TDFN33-8

8

TAPE & REEL

PIN DESCRIPTIONS

PIN NUMBER

PIN NAME

PIN DESCRIPTION

1

nEOC

Open-Drain Charge Status Indicator. nEOC is a high voltage output and can with-

stand up to 12V, allowing it to drive LEDs that are directly connected to IN or to a

lower voltage supply. nEOC features an internal 7mA current limit, allowing this

pin to directly drive an LED for a visual charge-status indicator. For a logic-level

charge status indicator, simply connect a 10kΩ or greater pull-up resistor between

nEOC and a suitable voltage supply.

2

ADJ

Charge Termination Voltage Adjust. Connect ADJ to G to select 4.10V termination

voltage or connect ADJ to IN to select 4.20V termination voltage.

3

IN

Power Input. IN can be withstand operating voltages of up to 12V. Bypass to G

with a 1µF or larger capacitor.

4

ISET

Charge Current Set. Program the maximum charge current by connecting a resis-

more information.

5

TIMER

6

BAT

Charge Battery Output. Connect this pin to the positive terminal of the battery.

Bypass this pin as close as possible to IC with 1µF ceramic capacitor.

7

G

Ground.

8

nSTAT

Open-Drain Charge Status Indicator. nSTAT can withstand up to 12V, allowing it

to drive LEDs that are directly connected to IN or to a lower voltage supply,

nSTAT features an internal 7mA current limit, allowing this pin to directly drive an

LED for a visual charge-status indicator. For a logic-level charge status indicator,

simply connect a 10kΩ or greater pullup resistor between nSTAT and a suitable

voltage supply.

EP

EP

Exposed Pad. The exposed thermal pad should be connected to board ground

plane and G. The ground plane should include a large exposed copper pad under

the package to connect the entire pad for thermal dissipation (see package out-

line).

PIN CONFIGURATION