DS2762
High-Precision Li+ Battery Monitor With Alerts
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
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
C
Li+ Safety Circuit
Overvoltage Protection
Overcurrent/Short-Circuit Protection
Undervoltage Protection
precise
temperature,
voltage,
and
current
C
Host Alerted When Accumulated Current or
Temperature Exceeds User-Selectable Limits
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.
C
C
0V Battery Recovery Charge
Available in Two Configurations:
Internal 25mꢀ Sense Resistor
External User-Selectable Sense Resistor
C
Current Measurement
12-Bit Bidirectional Measurement
Internal Sense Resistor Configuration:
0.625mA LSB and ±1.9A Dynamic Range
External Sense Resistor Configuration:
15.625ꢁV LSB and ±64mV Dynamic Range
PIN CONFIGURATIONS
TOP VIEW
1
2
16
15
14
13
12
11
10
9
VIN
CC
PLS
DC
VDD
PIO
VSS
VSS
VSS
PS
C
Current Accumulation:
3
2
Internal Sense Resistor: 0.25mAhr LSB
External Sense Resistor: 6.25ꢁVhr LSB
SNS
SNS
SNS
DQ
4
5
6
7
8
C
C
Voltage Measurement with 4.88mV Resolution
Temperature Measurement Using Integrated
Sensor with 0.125°C Resolution
C
System Power Management and Control
Feature Support
IS2
IS1
TSSOP
C
C
C
32 Bytes of Lockable EEPROM
16 Bytes of General-Purpose SRAM
1
2
3
4
Dallas 1-Wire® Interface with Unique 64-Bit
Device Address
A
SNS
C
Low-Power Consumption:
B
C
D
PLS DC
DQ
Active Current: 60ꢁA typ, 90ꢁA max
Sleep Current: 1ꢁA typ, 2ꢁA max
SNS
CC
IS2
IS1
PROBE
APPLICATIONS
PDAs
VSS
VIN
PROBE
E
F
Cell Phones/Smartphones
Digital Cameras
VDD PIO
PS
VSS
FLIP CHIP
ORDERING INFORMATION
(top view – bumps on bottom)
PART
TEMP RANGE
PIN-PACKAGE
DS2762BE
-20°C to +70°C
16 TSSOP
Selector Guide appears at end of data sheet, for additional
options.
1-Wire is registered trademark of Dallas Semiconductor.
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.
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