Overview
The Texas Instruments BQ24295RGER is a highly-integrated switch-mode battery charge management and system power path management device designed for 1-cell Li-Ion and Li-polymer batteries. This device is optimized for use in a wide range of portable device applications, including power banks, tablets, and other mobile devices. It features autonomous battery charging with or without host management, allowing it to initiate and complete charging cycles without software control. The BQ24295RGER supports USB input sources from 3.9V to 6.2V, is compliant with USB 2.0 and USB 3.0 power specifications, and includes various safety features such as thermal regulation, over-voltage protection, and MOSFET over-current protection.
Key Specifications
| Parameter | Specification |
|---|---|
| Input Voltage Range | 3.9V to 6.2V |
| Input Current Limit | 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A |
| Charge Voltage Regulation | ±0.5% |
| Charge Current Regulation | ±7% |
| Input Current Regulation | ±7.5% |
| Output Voltage Regulation in Boost Mode | ±3% |
| Switching Frequency | 1.5 MHz |
| Package Type | 24-pin, 4mm × 4mm VQFN |
| Boost Mode Output Voltage | Adjustable 4.55 V – 5.5 V (default 5.1 V) at 1.5 A |
| Efficiency | 90% High Efficiency Switch Mode Charger, 90% Boost Mode Efficiency |
| OTG Startup Time | 22 ms (typical) |
Key Features
- I2C controlled for optimal system performance and status reporting
- Autonomous battery charging with or without host management
- Battery charge enable, preconditioning, and termination
- High accuracy charge voltage and current regulation
- Power path management with narrow VDC (NVDC)
- Instant system on with no battery or deeply discharged battery
- Ideal diode operation in battery supplement mode
- Synchronous switching MOSFETs and integrated current sensing
- Battery temperature sensing and charging safety timer
- Thermal regulation and thermal shutdown
- Input and system over-voltage protection, MOSFET over-current protection
- Low battery leakage current (20 µA) and support for shipping mode
Applications
The BQ24295RGER is suitable for a wide range of portable device applications, including:
- Power banks
- Tablets
- Smartphones
- Other mobile and handheld devices
Q & A
- What is the input voltage range of the BQ24295RGER?
The input voltage range is from 3.9V to 6.2V. - What are the available input current limits for the BQ24295RGER?
The input current limits are 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A. - Does the BQ24295RGER support USB 2.0 and USB 3.0 power specifications?
Yes, it is compliant with both USB 2.0 and USB 3.0 power specifications. - What is the switching frequency of the BQ24295RGER?
The switching frequency is 1.5 MHz. - What is the package type of the BQ24295RGER?
The package type is a 24-pin, 4mm × 4mm VQFN. - What safety features does the BQ24295RGER include?
The device includes thermal regulation, over-voltage protection, MOSFET over-current protection, and battery charging safety timer. - Can the BQ24295RGER operate without a host processor?
Yes, it can initiate and complete charging cycles autonomously without host management. - What is the efficiency of the BQ24295RGER in switch mode and boost mode?
The efficiency is 90% in both switch mode and boost mode. - How quickly can the BQ24295RGER start up in OTG mode?
The OTG startup time is typically 22 ms. - Does the BQ24295RGER support battery boost operation?
Yes, it supports adjustable output voltage from 4.55 V to 5.5 V (default 5.1 V) at 1.5 A in boost mode.
