ACT2813/ACT2813C
Rev 2, 19-May-15
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
LED1
Battery level indicator. An internal 3.5mA sink current limit is built in.
Fast charge current setting pin. Connect a resistor from this pin to AGND to set the
charge current. The current setting ranges from 1.0A-3.0A.
2
3
4
ICST
IOST
CSP
Output current setting. Connect a resistor from this pin to AGND to set output constant
current. The current setting ranges from 1.0A-3.0A.
Positive terminal of charge current sense input. Kevin sense is required with 10nF
ceramic capacitor right across CSP and CSN pins.
Battery input and negative terminal of charge current sense input. Connected to the
battery pack positive terminal to provide power in High-Z mode. Bypass to PGND with
a high quality ceramic capacitor placed as close to the IC as possible.
5
6
VBAT/CSN
PGND
Power ground. PGND is connected to the source of low-side N-channel MOSFET and
the MOSFET’s gate driver. PGND must be connected to AGND externally through
ground plane.
7, 8
9
SW
VOUT
VIN
Internal switch to output inductor terminal.
Output pin. Bypass to PGND with a high quality low ESR and ESL ceramic capacitor
placed as close to the IC as possible.
10
11
USB or AC adaptor input. When VIN is valid, charge and power path is enabled.
Analog ground. AGND must be connected to PGND externally through ground plane.
AGND
Drive external P-FET to protect output short circuit and leakage during shutdown. nPG
pin is pulled up to VOUT internally. nPG pin is pulled low if VOUT is in the range.
12
13
nPG
PB
Push button input, connect a push button from this pin to AGND, internally pulled up
by a 3MΩ resistor to battery. PB starts up boost converter if HZ pin is grounded and
VIN is not present. When this pin is pushed for 30ms, LED1-4 indicators are enable for
5 seconds.
Boost/high-Z mode enable pin, internally pulled up by a 3MΩ resistor to battery. When
HZ pin is pulled ground, boost is enabled if VIN is not present.
14
15
HZ
TH: ACT2813
Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K
pulled down resistor.
TH/FLD
FLD: ACT2813C
Open-drain flashlight driver. A internal switch can handle up to 50mA.
Battery level voltage shift. Connect a resistor from this pin to AGND to shift the battery
LED indication thresholds.
16
17
BLVS
RIMC
Battery impendence compensation input. Connect to a resistor from this pin to APNG
to program the battery impedance.
18
19
20
21
LED4
LED3
LED2
EP
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Exposed pad. Must be soldered to ground on the PCB.
Innovative PowerTM
- 3 -
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