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Maxim > Solutions > Battery Management

Battery Monitors: 1 Li+ Cell Battery Packs (< 4.4V Battery Voltage)

DATA SHEETS
Display Title/Parts Key Advantages
QV  PDF 1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier
MAX9634

Industry's Smallest Current-Sense Amp: 1mm x 1mm with ICC < 1µA, VOS < 250µV, Gain Error
QV  PDF Low-Cost, 2-Wire Battery Monitor with Ratiometric A/D Inputs
DS2746

2-Wire Fuel Gauge Measures Battery Current and Voltage and Includes Ratiometric Voltage Inputs that Can Be Used to Sample Thermistor, Pack ID, or Another Voltage Source
QV  PDF High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode
DS2756

Provides Key Hardware Components Required to Accurately Estimate Remaining Capacity by Integrating Low-Power Precision Measurements of Temperature, Voltage, Current, Current Accumulation, and Nonvolatile Data Storage
QV  PDF Low-Cost I²C Battery Monitor
DS2745

Low-cost battery fuel gauge that monitors current, voltage, and temperature
QV  PDF High-Precision Coulomb Counter
DS2740

High-Precision Battery Fuel Gauge Costs Less than $1.00 Ideal for Handheld Products



Key Specifications:  Battery Protectors, Selectors and Monitors
Part Number Functions Battery Type Interface User Data Storage
(Bytes)
Parameters Measured VSUPPLY
(V)
VSUPPLY
(V)
Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
min max max w/pins
DS2746  Fuel Gauge
1 Cell Li-Ion
3-Cell NiMH
2-Wire -
Current
Voltage
2.5 5.5
TDFN-EP/10
9.6 -40 to +85
DS2756  1-Wire
8 SRAM
96 EEPROM
Current
Temperature
Voltage
3
TSSOP/8
20.3
DS2745  2-Wire -
Current
Temperature
Voltage
2.5
µMAX/8
16.2
DS2740  1-Wire - Current 2.7
µMAX/8
16.2
See All Battery Protectors, Selectors and Monitors (26)

Key Specifications:  Current Sense Amplifiers
Part Number CMVR
(V)
CMVR
(V)
ICC
(µA)
Bi-Dir. Curr. Sense VSENSE_FS
(mV)
VOS @25°C
(µV)
Gain Gain Accuracy @25°C
(%)
BW
(kHz)
Comp-
arators
Oper. Temp.
(°C)
Package/Pins
min max typ recomm. max max @ -3dB
MAX9634 NEW! 1.6 28 1 No
25
50
100
250
25 V/V
50 V/V
100 V/V
200 V/V
0.5
15
30
60
125
0 -40 to +85
SOT/5
UCSP (R)/4
See All Current Sense Amplifiers (30)



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