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



DATA SHEETS
Part Number Description Key Advantages
MAX17040, MAX17041 Compact, Low-Cost 1S/2S Fuel Gauges

Smarten Up Your Dumb Battery!
MAX17043, MAX17044 Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert

Smarten Up Your Dumb Battery!
DS2784 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication

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

2-wire stand-alone fuel-gauge IC calculates remaining battery capacity and simplifies software development
DS2780 Stand-Alone Fuel Gauge IC

Stand-Alone Fuel-Gauge IC Calculates Remaining Battery Capacity and Simplifies Software Development



Key Specifications:

Battery Protectors, Selectors and Monitors
Part Number Functions Battery Type Interface User Data Storage
(Bytes)
Parameters Measured Battery Protection VSUPPLY
(V)
VSUPPLY
(V)
Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
min max max w/pins
MAX17043  Fuel Gauge 1 Cell Li-Ion 2-Wire -
State of Charge
Voltage
- 2.5 4.5
TDFN-EP/8
UCSP(R)/9
2.7 -40 to +85
MAX17044  Fuel Gauge 2 Cell Li-Ion 2-Wire -
State of Charge
Voltage
- 4.5
TDFN-EP/8
UCSP(R)/9
2.7
MAX17040  Fuel Gauge 1 Cell Li-Ion 2-Wire -
State of Charge
Voltage
- 4.5
TDFN-EP/8
6.3
MAX17041  Fuel Gauge 2 Cell Li-Ion 2-Wire -
State of Charge
Voltage
- 4.5
TDFN-EP/8
UCSP(R)/9
2.7
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
4.6
TDFN/14
15
DS2782  Fuel Gauge 1-2 Cell Li-Ion 2-Wire 40 EEPROM
Current
Temperature
Voltage
- 5.5
TDFN/10
TSSOP/8
11.3
DS2780  Fuel Gauge 1-2 Cell Li-Ion 1-Wire 40 EEPROM
Current
Temperature
Voltage
- 5.5
TDFN/10
TSSOP/8
11.3
See All Battery Protectors, Selectors and Monitors (34)





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