Datasheet

DS2786 Stand-Alone OCV-Based Fuel Gauge
5 of 22
PIN DESCRIPTION
PIN NAME FUNCTION
1 AIN1
Aux Voltage Input Number 1
2 AIN0
Aux Voltage Input Number 0
3 SCL
Serial Clock Input. Input only 2-wire clock line. Connect this pin to the clock signal of the
2-wire interface. This pin has a 0.2µA typical pulldown to sense disconnection.
4 SDA
Serial Data Input/Output. Open drain 2-wire data line. Connect this pin to the clock
signal of the 2-wire interface. This pin has a 0.2µA typical pulldown to sense
disconnection.
5 SNS Current-Sense Input. Connect to the handset side of the sense resistor.
6 V
SS
Device Ground. Connect to the battery side of the sense resistor.
7 V
PROG
EEPROM Programming Voltage Input. Connect to external supply for production
programming. Connect to V
SS
during normal operation.
8 V
OUT
Voltage Out. Supply for Aux Input Voltage Measurement Dividers. Connect to high side
of resistor divider circuits.
9 V
IN
Battery Voltage Input. The voltage of the cell pack is measured through this pin.
10 V
DD
Power-Supply Input. 2.5V to 4.5V input range. Connect to system power through a
decoupling network.
PAD PAD Exposed Pad. Connect to V
SS
.
Figure 2. Block Diagram
VIN
AIN0