Overview
The BQ24104RHLR, produced by Texas Instruments, is a highly integrated synchronous switch-mode Li-ion and Li-polymer battery charge management IC. This component is part of the bqSWITCHER™ series, designed for efficient and reliable battery charging in a variety of portable applications. It features an integrated synchronous PWM controller and power FETs, ensuring high-accuracy voltage and current regulation. The BQ24104RHLR is suitable for single-, two-, or three-cell Li-ion and Li-polymer battery packs and also supports LiFePO4 batteries.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | VQFN (RHL) | |
| Number of Pins | 20 | |
| Package Size | 3.50 mm × 4.50 mm | |
| Operating Temperature Range | -40 to 85 | °C |
| Cell Chemistry | Li-Ion/Li-Polymer | |
| Number of Series Cells | 1, 2 | |
| Battery Charge Voltage (Max) | 4.2, 8.4 | V |
| Charge Current (Max) | 2 A | |
| Control Topology | Switch-Mode Buck | |
| Control Interface | Standalone (RC-Settable) | |
| Absolute Max Vin | 20 V | |
| Operating Vin (Max) | 16 V | |
| Operating Vin (Min) | 4.35 V |
Key Features
- 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
- Battery temperature monitoring using a thermistor pin
- Automatic sleep mode for low power consumption
- Reverse leakage protection to prevent battery drainage
- Thermal shutdown and protection
- Built-in battery detection
- Status outputs for LED or host processor interface indicating charge-in-progress, charge completion, fault, and AC-adapter present conditions
- 20-V maximum voltage rating on IN and OUT pins
- High-side battery current sensing
Applications
- Handheld products
- Portable media players
- Industrial and medical equipment
- Portable equipment
Q & A
- What is the BQ24104RHLR used for?
The BQ24104RHLR is used for managing the charging of Li-ion and Li-polymer battery packs in various portable applications.
- What is the maximum charge current of the BQ24104RHLR?
The maximum charge current of the BQ24104RHLR is 2 A.
- What types of battery chemistry does the BQ24104RHLR support?
The BQ24104RHLR supports Li-ion and Li-polymer battery chemistry, as well as LiFePO4 batteries.
- What is the operating temperature range of the BQ24104RHLR?
The operating temperature range of the BQ24104RHLR is -40 to 85°C.
- What is the package type and size of the BQ24104RHLR?
The BQ24104RHLR comes in a VQFN (RHL) package with 20 pins, measuring 3.50 mm × 4.50 mm.
- Does the BQ24104RHLR have built-in thermal protection?
Yes, the BQ24104RHLR has built-in thermal shutdown and protection.
- How does the BQ24104RHLR manage battery temperature?
The BQ24104RHLR manages battery temperature using a thermistor pin.
- What are the status outputs of the BQ24104RHLR?
The BQ24104RHLR provides status outputs for indicating charge-in-progress, charge completion, fault, and AC-adapter present conditions.
- Does the BQ24104RHLR have reverse leakage protection?
Yes, the BQ24104RHLR has reverse leakage protection to prevent battery drainage.
- Can the BQ24104RHLR be used in sleep mode?
Yes, the BQ24104RHLR automatically enters sleep mode when the VCC supply is removed to conserve power.
