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Single Chip Charger and DC/DC Converter IC for Bluetooth (bqHYBRID) (Rev. B)
Texas Instruments
Description
The bq2501x series are highly integrated charge andpower management devices targeted at space-limited bluetooth applications. The bq2501x series offer integrated power FET and current sensor for charge control, reverse blocking protection, high accuracy current and voltage regulation, charge status, charge termination, and a highly efficient and low-power dc-dc converter in a small package. The bq2501x charges the battery in three phases: conditioning, constant current and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety feature for charge termination. The bq2501x automatically re-starts the charge if the battery voltage falls below an internal threshold. The bq2501x automatically enters sleep mode when VCC supply is removed. The integrated low-power high-efficiency dc-dc converter is designed to operate directly from a single-cell Li-Ion or Li-Pol battery pack. The output voltage is either adjustable from 0.7 V to VBAT (bq25010), fixed at 3.3 V (bq25011), or fixed at 1.8 V (bq25012), and is capable of delivering up to 150-mA of load current. The dc-dc converter operates at a synchronized 1 MHz switching frequency allowing for the use of small inductors.
Features
Li-Ion Or Li-Pol ChargeManagement and Synchronous DC-DC Power Conversion In a Single Chip Optimized for Powering Bluetooth™ Headsets and Accessories Charges and Powers the System from Either the AC Adapter or USB with Autonomous Power Source Selection Integrated USB Charge Control with Selectable 100 mA and 500 mA Charge RatesIntegrated Power FET and Current Sensor for Up to 500 mA Charge Applications AND 100 mA DC-DC Controller with Integrated FETsReverse Leakage Protection Prevents Battery DrainageAutomatic Power Save Mode For High Efficiency at Low Current, or Forced PWM for Frequency Sensitive Applications3.5 mm × 4.5 mm QFN PackageAPPLICATIONSBluetooth™ HeadsetsBluetooth™ AccessoriesLow-Power Handheld Devices Bluetooth is a trademark of Bluetooth SIG, Inc.
Related Datasheets
| Part Number | Description | Category |
| • BQ2057 | Advanced Linear Charge Mgmt IC for Single/Two-Cell Lithium-Ion & Lithium-Polymer (Rev. F) | ICs, Interface |
| • BQ24007 | Single-Cell Li-Ion Charge Mgmt IC w/Timer-Enable for PDAs & Appliances (Rev. D) | ICs, Interface |
| • BQ24020 | Single-Chip Li-Ion & Li-Pol Charger IC w/Autonomous USB-Port & AC Adapt (Rev. E) | ICs, Interface |
| • BQ24030 | Single-Chip Charge and System Power-Path Management IC (bqTINY-III) (Rev. G) | ICs, Interface |
| • BQ24070 | Single-Chip Li-Ion Charge and System Power-Path Mangement IC (Rev. B) | ICs, Interface |
| • BQ25010 | Single Chip Charger and DC/DC Converter IC for Bluetooth (bqHYBRID) (Rev. B) | ICs, Interface |
| • TPS61200 | Low Input Voltage Synchronous Boost Converter With 1.3-A Switches (Rev. B) | ICs, Interface |
| • TPS62100 | Multimode Low-Power Buck Converter (Rev. B) | ICs, Interface |
| • TPS71709 | Low Noise, High-Bandwidth PSRR, Low-Dropout 150mA Linear Regulator (Rev. D) | ICs, Interface |
| • UCC28019 | 8-Pin Continuous Conduction Mode (CCM) PFC Controller (Rev. B) | ICs, Interface |
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