Rev 2, Feb-04-2016

- 4 -

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Copyright © 2016 Active-Semi, Inc.

ACT2804

PIN DESCRIPTIONS

PIN

NAME

DESCRIPTION

26

AGND

Logic ground output. Connect this pin to the exposed PGND pad on same layer with IC.

27

PB

Push button input. When this pin is pushed for more than 40ms, LED1-4 indicators are ena-

bled for 5 seconds.

28

LED1

Battery level indicator.

29

LED2

Battery level indicator.

30

LED3

Battery level indicator.

31

LED4

Battery level indicator.

32

LEDLS1

LED1 threshold level shift. Connect a resistor from the pin to AGND to shift LED1 threshold.

33

LEDLS2

LED2 threshold level shift. Connect a resistor from the pin to AGND to shift LED2 threshold.

34

LEDLS3

LED3 threshold level shift. Connect a resistor from the pin to AGND to shift LED3 threshold.

35

LEDLS4

LED4 threshold level shift. Connect a resistor from the pin to AGND to shift LED4 threshold.

36

PT

LED indication mode input. The 5 modes of LED indication patterns are set by a voltage at

this pin. Connect a resistor at the pin to set the voltage and an LED indication pattern.

37

RIMC

RIMC Battery impedance compensation input.

38

HYST

The hysteresis window setting input. Connect a resistor at the pin to set the hysteresis win-

dows for LED1, 2, 3, 4.

39

DM

Output port auto detection input. Connected to portable device D-.

40

DP

Output port auto detection input. Connected to portable device D+.

41

PGND

Exposed pad. Must be soldered to ground plane layer(s) on the PCB for best electrical and

thermal conductivity.