1 of 25 010906
FEATURES
§ Li+ safety circuit
- Overvoltage protection
- Overcurrent/short circuit protection
- Undervoltage protection
§ Zero Volt 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
§ 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: 90mA max
- Sleep current: 2mA max
PIN ASSIGNMENT
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
V
DD
- Power supply input (2.5V to 5.5V)
VSS - Device ground
SNS - Sense resistor connection
IS1 - Current sense input
IS2 - Current sense input
SNS Probe - Do not connect
VSS Probe - Do not connect
DS2760
High-Precision Li+ Battery Monito
r
www.maxim-ic.com
CC VIN
V
DD
PIO
VSS
VSS
VSS
PS
IS1
DS2760
16-Pin TSSOP Package
IS2
SNS
SNS
1
2
2
3
2
1
4
5
6
7
8
16
15
14
13
12
11
10
9
SNS
DQ
PLS
DC
DS2760
Flip-Chip Packaging
Top View
1-Wire is a registered trademark of Dallas Semiconductor.
PLS DC DQ
CC IS2
VIN IS1
VDD PIO PS
SNS
VSS
1 2 3 4
A
B
C
D
E
F
SNS
Probe
VSS
Probe
DS2760
2
ORDERING INFORMATION
Part Marking Description
DS2760AE+ DS2760A TSSOP, External Sense Resistor, 4.275V Vov, Lead-Free
DS2760BE+ DS2760B TSSOP, External Sense Resistor, 4.35V Vov, Lead-Free
DS2760AE+T&R DS2760A DS2760AE+ on Tape & Reel, Lead-Free
DS2760 BE+T&R DS2760B DS2760BE+ on Tape & Reel, Lead-Free
DS2760AE+025 2760A25
TSSOP, 25mW Sense Resistor, 4.275V Vov, Lead-Free
DS2760BE+025 2760B25
TSSOP, 25mW Sense Resistor, 4.35V Vov, Lead-Free
DS2760AE+025/T&R 2760A25 DS2760AE+025 in Tape & Reel, Lead-Free
DS2760BE+025/T&R 2760B25 DS2760BE+025 in Tape & Reel, Lead-Free
DS2760AX DS2760A Flipchip, External Sense Resistor, Tape & Reel, 4.275V Vov
DS2760BX DS2760B Flipchip, External Sense Resistor, Tape & Reel, 4.35V Vov
DS2760AX-025 DS2760AR
Flipchip, 25mW Sense Resistor, Tape & Reel, 4.275V Vov
DS2760BX-025 DS2760BR
Flipchip, 25mW Sense Resistor, Tape & Reel, 4.35V Vov
DS2760AE DS2760A TSSOP, External Sense Resistor, 4.275V Vov
DS2760BE DS2760B TSSOP, External Sense Resistor, 4.35V Vov
DS2760AE/T&R DS2760A DS2760AE on Tape & Reel
DS2760 BE/T&R DS2760B DS2760BE on Tape & Reel
DS2760AE-025 2760A25
TSSOP, 25mW Sense Resistor, 4.275V Vov
DS2760BE-025 2760B25
TSSOP, 25mW Sense Resistor, 4.35V Vov
DS2760AE-025/T&R 2760A25 DS2760AE-025 in Tape & Reel
DS2760BE-025/T&R 2760B25 DS2760BE-025 in Tape & Reel
DESCRIPTION
The DS2760 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 data storage, and Li+ protection into
the small footprint of either a TSSOP package or flip chip. The DS2760 is a key component in
applications including remaining capacity estimation, safety monitoring, and battery-specific data storage.
Via its 1-Wire interface, the DS2760 gives the host system read/write access to status and control
registers, instrumentation registers, and general purpose data storage. Each device has a unique factory-
programmed 64-bit net address which allows it to be individually addressed by the host system,
supporting multi-battery operation.
The DS2760 is capable of performing temperature, voltage and current measurement to a resolution
sufficient to support process monitoring applications such as battery charge control, remaining capacity
estimation, and safety monitoring. Temperature is measured using an on-chip sensor, eliminating the need
for a separate thermistor. Bidirectional current measurement and accumulation are accomplished using
either an internal 25mW sense resistor or an external device. The DS2760 also features a programmable
I/O pin that allows the host system to sense and control other electronics in the pack, including switches,
vibration motors, speakers and LEDs.
Three types of memory are provided on the DS2760 for battery information storage: EEPROM, lockable
EEPROM and SRAM. EEPROM memory saves important battery data in true nonvolatile memory that
is unaffected by severe battery depletion, accidental shorts or ESD events. Lockable EEPROM becomes
ROM when locked to provide additional security for unchanging battery data. SRAM provides
inexpensive storage for temporary data.
DS2760
3
BLOCK DIAGRAM Figure 1
1-WIRE
INTERFACE
AND
ADDRESS
THERMAL
SENSE
MUX
VOLTAGE
REFERENCE
ADC
REGISTERS AND
USER MEMORY
25mW
DQ
chi
p
g
round
+
-
LOCKABLE EEPROM
SRAM
TEMPERATURE
VOLTAGE
CURRENT
ACCUM. CURRENT
STATUS / CONTROL
LI+ PROTECTION
VIN
IS1
IS2
SNS
IS2 IS1
VSS
CC
DC
PLS
PS
PIO
TIMEBASE
internal sense resistor configuration only

DS2760BE+025

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Battery Management
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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