DS2760 Datasheet, PDF (1/25 Pages) Dallas Semiconductor – High Precision Li-Ion Battery Monitor

www.dalsemi.com
PRELIMINARY
DS2760
High Precision Li-Ion Battery Monitor
FEATURES
Li-Ion safety circuit
- Overvoltage protection
- Overcurrent/short circuit protection
- Undervoltage protection
Available in two configurations:
- Internal 25 mΩ sense resistor
- External user-selectable sense resistor
Current measurement
- 12-bit bi-directional measurement
- Internal sense resistor configuration:
0.625 mA LSB and ±1.8A dynamic range
- External sense resistor configuration:
15.625 µV LSB and ±64 mV dynamic range
Current accumulation
- Internal sense resistor: 0.25 mAhr LSB
- External sense resistor: 6.25 µVhr LSB
Voltage measurement with 4.88 mV resolution
Temperature measurement using integrated
sensor with 0.125°C resolution
System power management and control feature
support
32 bytes of lockable EEPROM
16 bytes of general purpose SRAM
Dallas 1-Wire^® interface with unique 64-bit
device address
Low power consumption:
- Active current: 80 µA max
- Sleep current: 2 µA max
PIN ASSIGNMENT
CC 1
16 VIN
PLS 2
15 VDD
DC 23
14 PIO
SNS 4
13 VSS
SNS 5
12 VSS
SNS 6
11 VSS
DQ 7
10 PS
IS2 8
9 IS1
DS2760
16-Pin TSSOP Package
PLS CC VIN VDD
DC NC NC NC PIO
SNS
Probe
NC
NC
VSS
Probe
SNS
VSS
DQ IS2 IS1 PS
DS2760
Flip-Chip Packaging
PIN DESCRIPTION
CC - Charge control output
DC - Discharge control output
DQ - Data input/output
PIO - Programmable I/O pin
PLS - Battery pack positive terminal input
PS - Power switch sense input
VIN - Voltage sense input
VDD- Power supply input (2.5V-5.5V)
VSS - Device ground
SNS - Sense resistor connection
IS1 - Current sense input
IS2 - Current sense input
NC - Not connected
SNS Probe – Do not connect
VSS Probe – Do not connect
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