DS2762
High-Precision Li+ Battery Monitor with Alerts
1-Wire Battery Monitor Integrates Single-Cell Protector and Alerts System when Current or Temperature Exceeds User-Defined Limits
Status
Part Number
Status
DS2762
Active: In Production. But some versions of the family are No Longer Available. See Ordering Information .
Description
The DS2762 high-precision Li+ battery monitor is a data-acquisition, information-storage, and safety-protection device tailored for cost-sensitive battery pack applications. This low-power device integrates precise temperature, voltage, and current measurement, nonvolatile (NV) data storage, and Li+ protection into the small footprint of either a TSSOP package or flip-chip package. The DS2762 is a key component in applications including remaining capacity estimation, safety monitoring, and battery-specific data storage.
An evaluation kit is available:
DS2762K
NOTE: This product requires use of the following:
DS2762K Evaluation Kit Software
Key Features
Applications/Uses
Li+ Safety Circuit
Overvoltage Protection
Overcurrent/Short-Circuit Protection
Undervoltage Protection
Host Alerted When Accumulated Current or Temperature Exceeds User-Selectable Limits
0V Battery Recovery Charge
Available in Two Configurations:
Internal 25mΩ Sense Resistor
External User-Selectable Sense Resistor
Current Measurement
12-Bit Bidirectional Measurement
Internal Sense Resistor Configuration: 0.625mA LSB and ±1.9A Dynamic Range
External Sense Resistor Configuration: 15.625µV LSB and ±64mV Dynamic Range
Current Accumulation:
Internal Sense Resistor: 0.25mAhr LSB
External Sense Resistor: 6.25µVhr LSB
Voltage Measurement with 4.88mV 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: 60µA typ, 90µA max
Sleep Current: 1µA typ, 2µA max
Key Specifications: Battery Protectors, Selectors and Monitors
Part Number
Functions
Battery Type
Interface
User Data Storage
Parameters Measured
Battery Protection
VSUPPLY
VSUPPLY
Package/Pins
Smallest Available Pckg.2 )
Oper. Temp.
Price
min
max
max w/pins
See Notes
DS2762 Fuel Gauge Protector Status Monitor
1 Cell Li-Ion
1-Wire
Current Temperature Voltage
Over-Current Over/Under Voltage
2.5
5.5
7
-40 to +85
$2.55 @1k
See All Battery Protectors, Selectors and Monitors (25)
Diagram
Pin Configurations
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2006-01-09
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