charge

8602GN Datasheet – Battery Charge Controller – O2MICRO

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Part Number: 8602GN, OZ8602GN

Function: Battery Charge Controller

Package: SOP 16 Pin

Manufacturer: O2MICRO

Image:

8602GN

Description

8602GN is a highly integrated battery charge controller with adapter current sense and an internal wakeup circuit. It can operate as a stand-alone charger or under the supervision of a host microcontroller.

8602GN-Datasheet

Features

• Supports fast-charge current

• Dynamic AC adapter current allocation for maximum charge rate

• High efficiency of >94%

• Provides 0.7% constant voltage operation accuracy

• Charges various battery chemistries, including Lilon with 2 to 4 cells, NiCd, and NiMH

• Analog inputs to program charging current and charging voltage

• Switches automatically to power-saving mode when the AC adapter is not available

• Powerful driver for PMOS switch

• Built-in under-voltage, over-voltage, and short-circuit protection

• 100% maximum switching duty cycle, requiring very low adapter voltage overhead

• Automatic AC Adapter voltage detection

• Easy interface with a microcontroller

• Automatically switches to wake-up current when charging over-discharged batteries or a short circuit is present

• Internal wake-up current function

• Outputs adapter current information

 

Pinouts

8602GN-Pinouts

 

Applications

• Notebook and Portable Electronic Battery Chargers

 

8602GN Datasheet

8602GN pdf

BQ24737 Datasheet PDF – Battery SMBus Charge Controller

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Part Number: BQ24737

Marking : BQ737

Function: Battery SMBus Charge Controller

Package: QFN-20 Type

Manufacturer: TI

Images

BQ24737 datasheet

Description

The BQ24737 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications. SMBus controlled input current, charge current, and charge voltage DACs allow for high regulation accuracies that can be programmed by the system power management micro-controller.

The device uses two charge pumps to separately drive N-channel MOSFETs (ACFET RBFET, and BATFET) for automatic system power source selection. SMBus controlled input current, charge current, and charge voltage digital-to-analog converters (DACs) allow for very high-regulation accuracies that can be easily programmed by the system power management microcontroller.

Pinout

BQ24737 pinout

Features

1. Enhanced Safety Features for Over Voltage Protection, Over Current Protection, Battery, Inductor and MOSFET Short Circuit Protection

2. Programmable Input Current, Charge Voltage, Charge Current Limits

3. Programmable Battery Depletion Threshold, and Battery LERAN Function

4. BQ707, BQ727 need ACOK LOW

5. BQ725, BQ735 need ACOK HIGH

Applications

1. Portable Notebook Computers, UMPC, Ultra-Thin Notebook, and Netbook

2. Personal Digital Assistant

3. Handheld Terminal

4. Industrial and Medical Equipment

5. Portable Equipment

Other data sheets are available within the file: BQ737

BQ24737 Datasheet PDF Download

BQ24737 pdf

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