Overview
The BQ24092DGQT is a highly integrated 1-cell, 1-A Li-ion and Li-Pol linear battery charger produced by Texas Instruments. This device is designed for space-limited portable applications and operates from either a USB port or an AC adapter. It features a high input voltage range with input overvoltage protection, supporting low-cost unregulated adapters. The charger includes multiple protection mechanisms and status indicators, making it a robust solution for battery management in various portable devices.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Product Category | Battery Management |
| Battery Type | Li-Ion |
| Output Voltage | 4.2 V |
| Output Current | 1 A |
| Operating Supply Voltage | 4.5 V to 6.5 V |
| Operating Supply Current | 0.8 mA |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +150°C |
| Package / Case | MSOP-PowerPad-10 (HVSSOP-10) |
| Packaging | Reel |
| Mounting Style | SMD/SMT |
| Factory Pack Quantity | 250 |
Key Features
- Charging Accuracy: 1% charge voltage accuracy and 10% charge current accuracy.
- Input Current Limit: Pin selectable USB 100-mA and 500-mA maximum input current limit.
- Programmable Thresholds: Programmable termination and precharge threshold via external resistors.
- Protection Mechanisms: 6.6-V overvoltage protection, input voltage dynamic power management, 125°C thermal regulation, and 150°C thermal shutdown protection. Also includes OUT short-circuit protection and ISET short detection.
- JEITA Compatibility: Operation over JEITA range via battery NTC, with ½ fast-charge-current at cold and 4.06 V at hot.
- Safety Timer: Fixed 10-hour safety timer.
- Status Indication: Charging/done status indication).
- Automatic Termination and Timer Disable Mode (TTDM): For absent battery pack with thermistor).
Applications
The BQ24092DGQT is suitable for various portable applications, including:
- Smartphones
- PDAs
- MP3 players
- Other space-limited portable devices requiring efficient and protected battery charging).
Q & A
- What is the output voltage of the BQ24092DGQT?
The output voltage is 4.2 V.
- What is the maximum output current of the BQ24092DGQT?
The maximum output current is 1 A.
- What is the operating temperature range of the BQ24092DGQT?
The operating temperature range is from -40°C to +150°C.
- Does the BQ24092DGQT support USB input?
- What protection mechanisms are included in the BQ24092DGQT?
The device includes overvoltage protection, thermal regulation, thermal shutdown protection, and short-circuit protection among others.
- How is the fast-charge current programmed in the BQ24092DGQT?
The fast-charge current is programmed via an external resistor connected to the ISET pin.
- What is the purpose of the TTDM mode in the BQ24092DGQT?
The TTDM (Automatic Termination and Timer Disable Mode) is for absent battery pack with thermistor, disabling timers and termination.
- What is the package type of the BQ24092DGQT?
The package type is MSOP-PowerPad-10 (HVSSOP-10).
- Is the BQ24092DGQT RoHS compliant?
- What is the typical standby current of the BQ24092DGQT?
The typical standby current is 125 μA.
