AAT3670(2007) Ver la hoja de datos (PDF) - Advanced Analogic Technologies

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componentes Descripción

Fabricante

AAT3670
(Rev.:2007)

1.6A Dynamic Battery Charger and Power Manager

Advanced Analogic Technologies 

AAT3670

1.6A Dynamic Battery Charger

and Power Manager

Pin Descriptions (continued)

Pin #

18

19

20

21

22

23

24

EP

Name

CT

STAT2

STAT1

N/C

USB

CHRUSB

ENBAT

Type

I

O

O

I

I/O

I

Function

Battery charge timer input pin. Connect a capacitor to this pin to set the ADP charge

timers. No time-out for USB charging. Timers are disabled when this pin is ground-

ed. The timer is suspended if the battery temperature is not within 0 to 50ºC or is in

charge reduction (either due to the supply voltage dropping or the device tempera-

ture rising) is activated. The timer continues where it left off after the battery temper-

ature returns to normal and the device is out of the charge reduction loops.

Open drain charger status reporting.

Open drain charger status reporting.

No connection.

USB input, source of system load and battery charging when ADP is not available.

Minimum 1µF input capacitor.

USB voltage sensed charge reduction programmable pin. A resistor divider from

USB to this pin and GND sets the charge reduction threshold. When this pin is

open, the charge reduction threshold is 4.5V. If this pin is tied to the USB pin,

charge reduction is disabled.

Battery load switch enable, active high.

Exposed paddle (bottom). Connect to ground as closely as possible to the device.

Pin Configuration

QFN44-24

(Top View)

USBSEL 1

OUT 2

OUT 3

BAT 4

BAT 5

ADP 6

18 CT

17 EN

16 TERM

15 GND

14 USBSET

13 ADPSET

3670.2007.02.1.1

3

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