Texas Instruments BQ24707 Product Info

Parameters

Rating	Catalog
Number of series cells	1, 2, 3, 4
Cell chemistry	Li-Ion/Li-Polymer
Charge current (max) (A)	8
Features	Input OVP, Power Path
Vin (min) (V)	4.5
Vin (max) (V)	24
Absolute max Vin (max) (V)	30
Control topology	Switch-Mode Buck
Battery charge voltage (min) (V)	1.024
Battery charge voltage (max) (V)	19.2
Control interface	SMBus
Operating temperature range (°C)	-40 to 85

Package

VQFN (RGR)-20-12.25 mm² 3.5 x 3.5

Features

SMBus Host-Controlled NMOS-NMOS
Synchronous Buck Converter With Programmable
615 kHz, 750 kHz, and 885 kHz Switching
Frequency
Real-Time System Control on ILIM Pin to Limit
Charge Current
Enhanced Safety Features for Overvoltage
Protection, Overcurrent Protection, Battery,
Inductor, and MOSFET Short-Circuit Protection
Programmable Input Current, Charge Voltage,
Charge Current Limits
- ±0.5% Charge Voltage Accuracy up to 19.2 V
- ±3% Charge Current Accuracy up to 8.128 A
- ±3% Input Current Accuracy up to 8.064 A
- ±2% 20× Adapter Current or Charge Current
  Output Accuracy
Programmable Adapter Detection and Indicator
Independent Comparator With Internal Reference
Integrated Soft-Start
Integrated Loop Compensation
AC Adapter Operating Range 5 V to 24 V
15-µA Off-State Battery Discharge Current
20-pin 3.5 mm × 3.5 mm^{QFN Package}
bq24707: ACOK Delay Default 1.3 s
bq24707A: ACOK Delay Default 1.2 ms
APPLICATIONS
- Portable Notebook Computers, UMPCs, Ultra-Thin
  Notebooks, and Netbooks
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
- Portable Equipment

All other trademarks are the property of their respective owners

SMBus Host-Controlled NMOS-NMOS
Synchronous Buck Converter With Programmable
615 kHz, 750 kHz, and 885 kHz Switching
Frequency
Real-Time System Control on ILIM Pin to Limit
Charge Current
Enhanced Safety Features for Overvoltage
Protection, Overcurrent Protection, Battery,
Inductor, and MOSFET Short-Circuit Protection
Programmable Input Current, Charge Voltage,
Charge Current Limits
- ±0.5% Charge Voltage Accuracy up to 19.2 V
- ±3% Charge Current Accuracy up to 8.128 A
- ±3% Input Current Accuracy up to 8.064 A
- ±2% 20× Adapter Current or Charge Current
  Output Accuracy
Programmable Adapter Detection and Indicator
Independent Comparator With Internal Reference
Integrated Soft-Start
Integrated Loop Compensation
AC Adapter Operating Range 5 V to 24 V
15-µA Off-State Battery Discharge Current
20-pin 3.5 mm × 3.5 mm^{QFN Package}
bq24707: ACOK Delay Default 1.3 s
bq24707A: ACOK Delay Default 1.2 ms
APPLICATIONS
- Portable Notebook Computers, UMPCs, Ultra-Thin
  Notebooks, and Netbooks
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
- Portable Equipment

All other trademarks are the property of their respective owners

Description

The bq24707 and bq24707A devices are high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery charging applications.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The IC uses the internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The IC provides an IFAULT output to alarm if any MOSFET fault or input over current occurs. This alarm output allows users to turn off input power selectors when the fault occurs. Meanwhile, an independent comparator with internal reference is available to monitor input current, output current, or output voltage.

The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm^{QFN package.}

The bq24707 and bq24707A devices are high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery charging applications.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The IC uses the internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

The IC provides an IFAULT output to alarm if any MOSFET fault or input over current occurs. This alarm output allows users to turn off input power selectors when the fault occurs. Meanwhile, an independent comparator with internal reference is available to monitor input current, output current, or output voltage.

The IC charges one-, two-, three-, or four-series Li+ cells, and is available in a 20-pin, 3.5 × 3.5 mm^{QFN package.}

ELECTRONIC COMPONENTS
All In One Distributor

BQ24707

SMBus 1-4 cell Buck battery charge controller with independent comparator and circuit protection

Texas Instruments BQ24707 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

BQ24707

SMBus 1-4 cell Buck battery charge controller with independent comparator and circuit protection

Texas Instruments BQ24707 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor