BQ24100 Overview
The bqSWITCHER™ series are highly integrated Liion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced VQFN package. The system-controlled...
BQ24100 Key Features
- 1 Ideal For Highly Efficient Charger Designs For Single-, Two-, or Three-Cell Li-Ion and Li-Polymer Battery Packs
- bq24105 Also for LiFePO4 Battery (see Using bq24105 to Charge the LiFePO4 Battery)
- Integrated Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHz With 0% to 100% Duty Cycle
- Integrated Power FETs for Up To 2-A Charge Rate
- High-Accuracy Voltage and Current Regulation
- Available in Both Stand-Alone (Built-In Charge Management and Control) and System-Controlled (Under System mand) Version
- Status Outputs for LED or Host Processor Interface Indicates Charge-In-Progress, Charge pletion, Fault, and AC-Adapter P
- 20-V Maximum Voltage Rating on IN and OUT Pins
- High-Side Battery Current Sensing
- Battery Temperature Monitoring
BQ24100 Applications
- Reverse Leakage Protection Prevents Battery Drainage
- Thermal Shutdown and Protection
- Built-In Battery Detection