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Maxim > Solutions > Cellular Handsets

NiMH/NiCd Battery Chargers

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF Overvoltage-Protection Controllers with a Low RON Internal FET
MAX4970, MAX4971, MAX4972

Up to +28V Input Voltage Protection Without External nFET in a Small, 2mm x 1.5mm, 12-Bump WLP
QV  PDF Complete Backup-Management ICs for Lithium and NiMH Batteries
MAX8568A, MAX8568B
QV  PDF Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications
MAX1501

First Temperature-Regulated, CC-CV Battery Charger with Overvoltage Protection for Portable Applications
QV  PDF NiCd/NiMH Battery Fast-Charge Controllers
MAX712, MAX713

Charges 1-16 Series Cells at Rates Up to 4C



Key Specifications:   Battery Backup Circuits
Part Number Reset Threshold Range (V) Max. ICC (µA) Features Package Operating Temp. Range (°C)
MAX8568A  2.5 to 3.3
3.3 to 5.5 		5
•Adjustable Reset Input
•Batt Freshness Seal
•Power Fail Comparator
 THIN QFN/16 -40 to +85
MAX8568B  2.5 to 3.3
3.3 to 5.5 		5
•Adjustable Reset Input
•Batt Freshness Seal
•Power Fail Comparator
 THIN QFN/16 -40 to +85
See All Battery Backup Circuits (92)

Key Specifications:   Battery Chargers
Part Number Cell Chemistry Number of NiMH or NiCd cells Number of Lithium-Ion cells Protected VIN (max) (V) Charging VIN (max) (V) Charge Rate Set by Max. Charge Current (A) Max. Charge Current (A) Charge Termination Charge Regulation Features EV-Kit Package Operating Temp. Range (°C)
MAX1501  Li-Ion
Li-Polymer
NiCd
NiMH 		3 1 13 6.25 Resistor 1.4 1.4 Timer Linear
•Stand Alone
•Thermal Die Regulation
•Timer
 Yes THIN QFN/16 -40 to +85
MAX712  NiMH 1
10
11
2
3
4
5
6
7
8
9 		 -  20 20 Resistor 2 2 Zero ΔV Linear
Switchmode
•Stand Alone
•Thermistor Input
•Timer
 Yes Ceramic DIP/16
PDIP/16
SOIC/16 		-40 to +85
-55 to +125
0 to +70
MAX713  NiCd
NiMH 		1
10
11
2
3
4
5
6
7
8
9 		 -  20 20 Resistor 2 2 -ΔV Linear
Switchmode
•Stand Alone
•Thermistor Input
•Timer
 Yes Ceramic DIP/16
PDIP/16
SOIC/16 		-40 to +85
-55 to +125
0 to +70
See All Battery Chargers (60)

Key Specifications:   Overvoltage Protection Controllers
Part Number Number of Channels VIN Min (V) VIN Max (V) Overvoltage Trip Level (V) Undervoltage Lockout (V) GATE Voltage (V) GATE Turn-On Time (ms) GATE Turn Off Time (us) Features Package
MAX4970  1 2.2 28 5.9 2.45 7 13 5
•Auto Retry
•Internal Charge Pump
•Internal Current-Limit Switch
•Internal Disconnect Switch
•Soft Start
 UCSP/12
WLP/12
MAX4972  1 2.2 28 4.65 2.45 7 13 5
•Auto Retry
•Internal Charge Pump
•Internal Current-Limit Switch
•Internal Disconnect Switch
•Soft Start
 UCSP/12
WLP/12
See All Overvoltage Protection Controllers (39)


         


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