Rainbow Electronics DS2761 - Manual

1 of 24 071902
FEATURES
§ Lithium-Ion (Li+) Safety Circuit
- Overvoltage Protection
- Overcurrent/Short-Circuit Protection
- Undervoltage Protection
§ Zero Volt Battery Recovery Charge
§ Available in Two Configurations:
- Internal 25m W 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:
15.625 mV LSB and ±64mV Dynamic
Range
§ Current Accumulation:
- Internal Sense Resistor: 0.25mAhr LSB
- External Sense Resistor: 6.25
mVhr 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: 60 mA typ, 90mA max
- Sleep Current: 1 mA typ, 2mA max
PIN CONFIGURATION
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
DS2761
High-Precision Li+ Battery Monitor
www.maxim-ic.com
CC V
IN
V
DD
PIO
V
SS
V
SS
V
SS
PS
IS1
DS2761
16-Pin TSSOP Package
IS2
SNS
SNS
1
2
23
2
1
4
5
6
7
8
16
15
14
13
12
11
10
9
SNS
DQ
PLS
DC
DS2761
Flip-Chip Package
PLS CC V
IN
V
DD
DC
SNS
Probe
VSS
Probe
SNS V
SS
PIO
DQ IS2 IS1 PS
1-Wire is a registered trademark of Dallas Semiconductor.