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Maxim > Solutions > Battery Management

Fuel Gauges: 1 Li+ cell battery packs (<4.4 battery voltage)

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784

Industry's First Complete Fuel Gauge Solution to Integrate a 1-Cell Li+ Protector and SHA-1 Authentication System
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 Stand-Alone Fuel Gauge IC
DS2782

2-wire stand-alone fuel-gauge IC calculates remaining battery capacity and simplifies software development
QV  PDF High-Precision Li+ Battery Monitor with 2-Wire Interface
DS2764

2-wire battery monitor integrates single-cell protector
QV  PDF Stand-Alone Fuel Gauge IC
DS2780

Stand-Alone Fuel-Gauge IC Calculates Remaining Battery Capacity and Simplifies Software Development
QV  PDF UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
MAX9025, MAX9026, MAX9027, MAX9028

QV  PDF High-Precision Li+ Battery Monitor with Alerts
DS2762

1-Wire Battery Monitor Integrates Single-Cell Protector and Alerts System when Current or Temperature Exceeds User-Defined Limits
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 Battery Protection Supply Voltage (min) (V) Supply Voltage (max) (V) Features Package Operating Temp. Range (°C)
DS2784 
Fuel Gauge
Protector
1 Cell Li-Ion 1-Wire 16 EEPROM Current
Temperature
Time
Voltage
Over Voltage
Over-Current
Over-Temperature
Over/Under Voltage
2.5 4.6
Digital Current Accumulation
Internal MOSFET Drivers
On-chip Remaining Capacity Algorithms
Unique ID
TDFN/14 -40 to +85
DS2746 
Fuel Gauge
1 Cell Li-Ion
3-Cell NiMH
2-Wire  -  Current
Voltage
 -  2.5 5.5
Digital Current Accumulation
Ratiometric Voltage Inputs
TDFN/10 -40 to +85
DS2756 
Fuel Gauge
1 Cell Li-Ion
3-Cell NiMH
1-Wire 8 SRAM
96 EEPROM
Current
Temperature
Voltage
 -  3 5.5
Digital Current Accumulation
One-Shot Mode
Suspend Mode
Unique ID
TSSOP/8 -40 to +85
DS2745 
Fuel Gauge
1 Cell Li-Ion
3-Cell NiMH
2-Wire  -  Current
Temperature
Voltage
 -  2.5 5.5
Digital Current Accumulation
uSOP/8 -40 to +85
DS2782 
Fuel Gauge
1/2 Cell Li-Ion 2-Wire 40 EEPROM Current
Temperature
Voltage
 -  2.5 5.5
Digital Current Accumulation
On-chip Remaining Capacity Algorithms
Unique ID
TDFN/10
TSSOP/8
-40 to +85
DS2764 
Fuel Gauge
Protector
1 Cell Li-Ion 2-Wire 40 EEPROM Current
Temperature
Voltage
Over-Current
Over/Under Voltage
2.5 5.5
Digital Current Accumulation
External MOSFET Drivers
TSSOP/16 -40 to +85
DS2780 
Fuel Gauge
1/2 Cell Li-Ion 1-Wire 40 EEPROM Current
Temperature
Voltage
 -  2.5 5.5
Digital Current Accumulation
On-chip Remaining Capacity Algorithms
Unique ID
TDFN/10
TSSOP/8
-40 to +85
DS2762 
Fuel Gauge
Protector
Status Monitor
1 Cell Li-Ion 1-Wire 16 SRAM
32 EEPROM
Current
Temperature
Voltage
Over-Current
Over/Under Voltage
2.5 5.5
Accumulated Current & Temperature Alerts
Digital Current Accumulation
External MOSFET Drivers
Unique ID
FCHIP/12
TSSOP/16
-40 to +85
DS2740 
Fuel Gauge
1 Cell Li-Ion
3-Cell NiMH
1-Wire  -  Current  -  2.7 5.5
Digital Current Accumulation
Unique ID
uSOP/8 -40 to +85
See All Battery Protectors, Selectors and Monitors (22)

Key Specifications:   Comparators
Part Number Number per Pkg. Typ Prop. Delay (ns) Input CMVR to Neg. Rail Min. Total Supply (V) Max. Total Supply (V) Max. Supply Current per Comp. (µA) Typ VOS (mV) Logic Output Latched Outputs Complementary Outputs Package Operating Temp. Range (°C)
MAX9027  1 14000 Yes 1.8 5.5 1 0.3 CMOS No No UCSP/0
UCSP/6
-40 to +85
MAX9028  1 14000 Yes 1.8 5.5 1 0.3 Open Drain No No UCSP/0
UCSP/6
-40 to +85
See All Comparators (83)

Key Specifications:   Comparators + Reference
Part Number Comps. per Pkg. Threshold (V) Number of Inputs / Thresholds (V) Threshold Accuracy (%) Internal Reference Accuracy (%) Typ Prop. Delay (µs) Supply Voltage (min) (V) Supply Voltage (max) (V) Max. Total Supply Current (µA) Comp. Inputs Available Prog. Hyst. Typ VOS (mV) VOS (max) (mV) Logic Output Package Operating Temp. Range (°C)
MAX9025  1 1.236 1 / 1.236 1 1 20 1.8 5.5 1.7 1 Inv. + 1 Noninv. No 0.3 5 Push-Pull UCSP/0
UCSP/6
-40 to +85
MAX9026  1 1.236 1 / 1.236 1 1 20 1.8 5.5 1.7 1 Inv. + 1 Noninv. No 0.3 5 Open Drain UCSP/0
UCSP/6
-40 to +85
See All Comparators + Reference (42)




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