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BQ24727 Datasheet PDF – Battery SMBus Charge Controller

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Part Number: BQ24727

Function: Battery SMBus Charge Controller

Package: QFN-20 Type

Manufacturer: TI

Images

BQ24727 datasheet

Description

The BQ24727 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

BQ24727 pinout

Features

  • SMBus-controlled synchronous buck battery charger
  • Supports multi-chemistry battery charging
  • Programmable charge voltage, current, and input current via DACs
  • Dual charge pump drives for ACFET, RBFET, and BATFET NMOS switches
  • Automatic power source selection between adapter and battery
  • Real-time current limiting via ILIM pin
  • Integrated loop compensation for simplified design
  • Programmable adapter detection and status indication

Typical Circuit Usage

  • Notebook and laptop battery charging systems
  • Power management in portable electronics
  • Embedded battery-powered systems
  • Industrial battery charging controllers
  • Smart battery charger modules

How to Choose This Part

  • Select for SMBus-controlled intelligent battery charging applications
  • Suitable for multi-cell lithium-ion or similar battery chemistries
  • Ideal when system-level power path control is required
  • Consider firmware capability for SMBus control and configuration
  • Evaluate external MOSFET and thermal design requirements

Applications

  • Laptops and notebooks
  • Portable battery-powered devices
  • Industrial handheld equipment
  • Smart battery charging systems
  • Embedded power management systems

Alternative / Equivalent Products

  • BQ24725A
  • BQ24735
  • ISL6251
  • MAX8731
  • LTC4011

Other data sheets are available within the file: BQ727, BQ24727RGRR

BQ24727 Datasheet PDF Download

BQ24727 pdf

BQ24707 Datasheet

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