BQ24721RHBR-IC-BQ24721-Smart Battery Charger with SMBus & System Power Selector

Price: 1
Brand Name: AD
Model Number: <span>BQ24721RHBR</span>
Post Date: Jun 24,2012

Product Description: BQ24721RHBR-IC-BQ24721-Smart Battery Charger with SMBus & System Power Selector

Part Detail:


BQ24721RHBR-IC-BQ24721-Smart Battery Charger with SMBus & System Power Selector 










The bq24721 is a high efficiency synchronous battery pack charger with high level of integration for portable applications. This device implements a high performance analog front-end that interfaces to the system power management micro-controller through a simplified SBS-like SMBus interface.

The dynamic power management (DPM) function modifies the charge current depending on system load conditions, avoiding ac adapter overload.

High accuracy current sense amplifiers enable accurate measurement of either the charge current or the ac adapter current, allowing termination of nonsmart packs and monitoring of overall system power.

The adapter isolation diode can be bypassed or entirely replaced with an external MOSFET using a control signal provided by the bq24721, thus reducing overall power dissipation.

View full Description in Datasheet




High Efficiency NMOS-NMOS Synchronous Buck Converter With User-Selectable 300 kHz or 500 kHz frequency bq24721C Offers Softer Turn-On, Stronger Turn-OffSBS-Like(1) SMBus Interface for Control and Status Communications With HostProgrammable Battery Voltage, Charge Current, and AC Adapter Current via SBS-Like SMBus Interface0.4% Charge Voltage Regulation Accuracy3% Charge Current Regulation Accuracy3% Adapter Current Regulation Accuracy Dynamic Power Management (DPM)2% Accuracy Integrated Charge and AC Adapter 20× Current Amplifier Output3-Cell and 4-Cell Li-Ion Voltage Regulation 9 V, 12 V-14.4 V, 16 V-19.2 VBattery Pack Voltage Operating Range 0 V-19.2 VAC Adapter Operating Range 8 V-28 V99.5% Max Duty CycleInternal Soft StartIntegrated 5% 5-V LDO When AC Adapter Applied6-V Drive Supply Voltage for Increased EfficiencyReverse Battery to Adapter Discharge ProtectionBattery/Adapter to System Power Selector FunctionCharge and Adapter Overcurrent ProtectionBattery Thermistor Sense, TS, ComparatorsAvailable in 32-Pin 5x5-mm QFN Package  



Ocean Electronic (Int'L) Limited 

Main Brands:

We Ocean Electronics deal with many famous brands such as: ADI, TI, MAXIM, ALTERA, XILINX, ST, INFINEON, ON, NXP, INTEL, LINEAR, TDK, AVX, MURATA and etc.



Main Parts:

Full series of electronic components: ICs, Tantalum capacitors, Beads, Optical couplers, Relay, Fuse,

Diodes, Discharge, Quartz crystal Devices, Speaker, Buzzer, Optoelectronics/Fiber, Laser, Transistor,

Trimmer potentiometers, FET(module), inductors, Fixed resistors, Swith, Crystal, Potentiometers and so on,

which are widely used in high-tech, civil, automobiles, instrument, communication, manufacture, and military fields.




1. Delivery Term: FOB Shen Zhen.
2. Parts can be arranged within 3 working days after the payment is recevied.
3. UPS/DHL/TNT/EMS/Fedex is optional, or other way customer appointed.


Terms & Conditions:

1. The remitter should pay all local and overseas bank fees and wire transfer fees when sending the payment. In Addition, all charges included in this invoice must not be omitted.
2. Seller take the responsibility if parts are detained by seller Custom, while buyer take the resonsibility if parts are detained by buyer Custom.
3. If the Buyer discovers a quality problem, and require the RMA, a test report from authoritative third party (IST, Rotronix, WhiteHorse)effectively demonstrate the quality problem is a must.
4. Please make sure to conduct a test on the parts before mounted on board. Seller will not take any responsibility for any parts which have been mounted in printed circuits board and then pulled out.
5. Sixty (60) days warranty is guaranteed for the parts. Defective parts should be returned within the guarantee period. NO return is accepted beyond the guarantee.
6. Any items must be returned in their original condition to qualify for a refund or replacement. 



You please send us your RFQs ,  in-time & professional service will be provided to serve you, thank you!








Ocean Electronic (Int'L) Limited

 One-stop Electronic Components Service Provider


Supplier Details:

Ocean Technology Company Ltd.

Sales:Ms. Vivian Lau

Contact Phone:86-755-83987756

Main Products:Integrated Circuits

Business type:Trading Company, Agent, Distributor/Wholesaler


User Reviews: BQ24721RHBR-IC-BQ24721-Smart Battery Charger with SMBus & System Power Selector