DS2764 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – High-Precision Li+ Battery Monitor with 2-Wire Interface

www.maxim-ic.com
GENERAL DESCRIPTION
The DS2764 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 DS2764 is a key
component in applications requiring remaining
capacity estimation, safety monitoring, and battery-
specific data storage.
PIN CONFIGURATIONS
TOP VIEW
CC
PLS
DC
SNS
SNS
SNS
PS
IS2
1
16
2
15
23
14
4
13
5
12
6
11
7
10
8
9
TSSOP
VIN
VDD
SCL
VSS
VSS
VSS
SDA
IS1
12 3 4
PLS DC
A
SNS
PS ^B
CC ^SNS
PROBE
VIN ^VSS
PROBE
VDD SCL
VSS
C
IS2
D
IS1
E
SDA _F
FLIP CHIP
(TOP VIEW¾BUMPS ON BOTTOM)
DS2764
High-Precision Li+ Battery Monitor
with 2-Wire Interface
FEATURES
§ Li+ Safety Circuit
Overvoltage Protection
Overcurrent/Short-Circuit Protection
Undervoltage Protection
§ 0V Battery Recovery Charge
§ Available in Two Configurations:
Internal 25mW 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:
15.625mV LSB and ±64mV Dynamic Range
§ Current Accumulation:
Internal Sense Resistor: 0.25mAhr LSB
External Sense Resistor: 6.25mVhr LSB
§ Voltage Measurement with 4.88mV Resolution
§ Temperature Measurement Using Integrated
Sensor with 0.125°C Resolution
§ 40 Bytes of Lockable EEPROM
§ Option for Unique 64-bit ID
§ Industry 2-Wire Interface with Programmable
Slave Address
§ Low-Power Consumption:
Active Current: 60mA typ, 90mA max
Sleep Current: 1mA typ, 2mA max
APPLICATIONS
PDAs
Cell Phones/Smartphones
Digital Cameras
ORDERING INFORMATION
PART
TEMP RANGE PIN-PACKAGE
DS2764BE
-20°C to +70°C 16 TSSOP
Selector Guide appears at end of data sheet, for additional
options.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1 of 20
011005