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DS2761BX-025 Datasheet

  • DS2761BX-025

  • High-Precision Li+ Battery Monitor

  • 286.98KB

  • 24頁

  • DALLAS   DALLAS

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DS2761
High-Precision Li+ Battery Monitor
www.maxim-ic.com
FEATURES
摟
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 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
Dallas 1-Wire
廬
Interface with Unique 64-bit
Device Address
Low Power Consumption:
- Active Current: 60mA typ, 90mA max
- Sleep Current:
1mA typ, 2mA max
PIN CONFIGURATION
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
1
2
3
SNS
4
A
DQ
IS2
IS1
PS
PLS DC
CC
VIN
SNS
Probe
VSS
Probe
B
C
D
E
摟
摟
摟
VDD PIO
VSS
F
DS2761
16-Pin TSSOP Package
DS2761
Flip-Chip Packaging*
Top View
PIN DESCRIPTION
- Charge Control Output
- 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
- Do Not Connect
V
SS
Probe
CC
DC
摟
摟
摟
摟
摟
摟
摟
摟
* 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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