Datasheet

DS2746 Low-Cost 2-Wire Battery Monitor
5 of 17
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 DATA
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 CTG Connect to Ground. Connect to the battery side of the sense resistor.
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.