Cellular Handsets - Parts List



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Maxim > Solutions > Cellular Handsets

NiMH/NiCd Battery Chargers

DATA SHEETS

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Title / Parts

Key Advantages

QV PDF

Overvoltage-Protection Controllers with a Low R_ON 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. I_CC (µA)

Features

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

MAX8568A

2.5 to 3.3
3.3 to 5.5

•	Adjustable Reset Input

•	Batt Freshness Seal

•	Power Fail Comparator

TQFN/16

-40 to +85

MAX8568B

2.5 to 3.3
3.3 to 5.5

•	Adjustable Reset Input

•	Batt Freshness Seal

•	Power Fail Comparator

TQFN/16

-40 to +85

See All Battery Backup Circuits (86)

Key Specifications: Battery Chargers

Part Number

Cell Chemistry

Number of NiMH or NiCd cells

Number of Lithium-Ion cells

Protected V_IN (max) (V)

Charging V_IN (max) (V)

Charge Rate Set by

Max. Charge Current (A)

Charge Termination

Charge Regulation

Features

EV-Kit

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

MAX1501

Li-Ion
Li-Polymer
NiCd
NiMH

6.25

Resistor

1.4

Timer

Linear

•	Stand Alone

•	Thermal Die Regulation

•

Timer

Yes

TQFN/16

-40 to +85

MAX712

NiMH

1
2
3
4
5
6
7
8
9
10
11

Resistor

Zero ΔV

Linear
Switchmode

•	Stand Alone

•	Thermistor Input

•

Timer

Yes

CDIP(N)/16
PDIP(N)/16
SOIC(N)/16

-55 to +125
-40 to +85
0 to +70

MAX713

NiCd
NiMH

1
2
3
4
5
6
7
8
9
10
11

Resistor

-ΔV

Linear
Switchmode

•	Stand Alone

•	Thermistor Input

•

Timer

Yes

CDIP(N)/16
PDIP(N)/16
SOIC(N)/16

-55 to +125
-40 to +85
0 to +70

See All Battery Chargers (62)

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

2.2

5.9

2.45

•	Auto Retry

•	Internal Charge Pump

•	Internal Current-Limit Switch

•	Internal Disconnect Switch

•	Soft Start

0/0
UCSP/12

MAX4972

2.2

4.65

2.45

•	Auto Retry

•	Internal Charge Pump

•	Internal Current-Limit Switch

•	Internal Disconnect Switch

•	Soft Start

0/0
UCSP/12

See All Overvoltage Protection Controllers (47)