DS2761 Datasheet, PDF (1/24 Pages) Dallas Semiconductor – High-Precision Li+ Battery Monitor

www.maxim-ic.com
FEATURES
§ Lithium-Ion (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: 60mA typ, 90mA max
- Sleep Current: 1mA typ, 2mA max
DS2761
High-Precision Li+ Battery Monitor
PIN CONFIGURATION
12 3 4
CC 1
16 VIN
PLS 2
15 VDD
DC 23
14 PIO
SNS 4
13 VSS
SNS 5
12 VSS
SNS 6
11 VSS
DQ 7
10 PS
IS2 8
9 IS1
DS2761
16-Pin TSSOP Package
PLS DC
A
SNS
B
DQ
CC ^SNS
Probe
VIN VSS
Probe
VDD PIO
VSS
C
IS2
D
IS1
E
PS _F
DS2761
Flip-Chip Packaging*
Top View
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
V_IN - Voltage-Sense Input
V_DD - Power-Supply Input (2.5V to 5.5V)
V_SS - Device Ground
SNS - Sense Resistor Connection
IS1 - Current-Sense Input
IS2 - Current-Sense Input
SNS Probe - Do Not Connect
V_SS Probe - Do Not Connect
* Mechanical drawing for the 16-pin TSSOP and DS2761 flip-chip package can be found at:
http://pdfserv.maxim-ic.com/arpdf/Packages/16tssop.pdf
http://pdfserv.maxim-ic.com/arpdf/Packages/chips/2761x.pdf
1-Wire is a registered trademark of Dallas Semiconductor.
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