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DS2762 Datasheet

  • DS2762

  • High-Precision Li+ Battery Monitor With Alerts

  • 25頁

  • ETC

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DS2762
High-Precision Li+ Battery Monitor With Alerts
www.maxim-ic.com
GENERAL 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.
摟
FEATURES
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 25mW Sense Resistor
External User-Selectable Sense Resistor
Current Measurement
12-Bit Bidirectional Measurement
Internal Sense Resistor Configuration:
0.625mA LSB and 鹵1.9A Dynamic Range
External Sense Resistor Configuration:
15.625mV LSB and 鹵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擄C Resolution
System Power Management and Control
Feature Support
32 Bytes of Lockable EEPROM
16 Bytes of General-Purpose SRAM
廬
Dallas 1-Wire Interface with Unique 64-Bit
Device Address
Low-Power Consumption:
Active Current: 60mA typ, 90mA max
Sleep Current: 1mA typ, 2mA max
摟
摟
摟
PIN CONFIGURATIONS
TOP VIEW
CC
PLS
DC
SNS
SNS
SNS
DQ
IS2
1
2
3
2
4
5
6
7
8
16
15
14
13
12
11
10
9
V
IN
V
DD
PIO
V
SS
V
SS
V
SS
PS
IS1
摟
摟
摟
摟
摟
摟
摟
摟
TSSOP
1
2
3
SNS
PLS
DC
CC
V
IN
V
DD
SNS
PROBE
V
SS
PROBE
4
A
DQ
IS2
IS1
PS
B
C
D
E
F
摟
APPLICATIONS
PDAs
Cell Phones/Smartphones
Digital Cameras
PIO
V
SS
FLIP CHIP
(top view 鈥?bumps on bottom)
ORDERING INFORMATION
PART
DS2762BE
TEMP RANGE
-20擄C to +70擄C
PIN-PACKAGE
16 TSSOP
1-Wire is registered trademark of Dallas Semiconductor.
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 25
REV: 111703

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