Rainbow Electronics DS2784 - Manual (Page 5)

DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
TYPICAL OPERATING CIRCUIT
PIN DESCRIPTION
PIN NAME FUNCTION
1 V
DD
Power-Supply Input. Chip supply input. Bypass with 0.1µF to V
SS
.
2 CTG Connect to Ground
3 V
SS
Device Ground. Chip ground and battery-side sense resistor input.
4 V
IN
Battery Voltage-Sense Input. Connect to positive cell terminal through decoupling
network.
5, 9, 10 N.C. No Connection
6 PLS
Pack Plus Terminal-Sense Input. Used to detect the removal of short-circuit, discharge
overcurrent, and charge overcurrent conditions.
7 CC Charge Control. Charge FET control output.
8 DC Discharge Control. Discharge FET control output.
11 DQ
Data Input/Output. Serial data I/O, includes weak pulldown to detect battery disconnect
and can be configured as wake input.
12 SNS
Sense Resistor Connection. Pack minus terminal and pack-side sense resistor sense
input.
13 CP Charge Pump Output. Bypass with 0.1µF to V
SS
.
14 PIO Programmable I/O Pin. Can be configured as wake input.
PAD PAD Exposed Pad. Connect to V
SS
or float.
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