Overview
The TPS61252DSGT is a high-efficiency boost converter from Texas Instruments, designed to provide a power supply solution for a variety of portable applications. This device is suitable for products powered by three-cell alkaline, NiCd or NiMH batteries, or single-cell Li-Ion or Li-polymer batteries. It features a wide input voltage range of 2.3 V to 6.0 V and an adjustable output voltage up to 6.5 V. The TPS61252DSGT is known for its high efficiency of up to 92% and its ability to operate in a small solution size, making it ideal for mobile phones, computer peripherals, and other portable devices.
Key Specifications
| Parameter | Value |
|---|---|
| Package | WSON (DSG) - 8 pins |
| Operating Temperature Range | -40°C to 125°C |
| Input Voltage Range | 2.3 V to 6.0 V |
| Output Voltage Range | Up to 6.5 V (adjustable) |
| Maximum Output Current | 1.5 A |
| Typical Operating Frequency | 3.25 MHz |
| Efficiency | Up to 92% |
| Quiescent Current in Skip Mode | 30 µA |
| Input Current Limit Accuracy | ±20% at 500 mA over full temperature range |
| Protection Features | Short Circuit Protection, Load Disconnect, Reverse Current Protection |
Key Features
- Resistor programmable input current limit with ±20% current accuracy at 500 mA over the full temperature range.
- Programmable input current limit from 100 mA up to 1500 mA.
- Up to 92% efficiency and adjustable output voltage up to 6.5 V.
- Power Good indication for appropriate output voltage level.
- 100% duty-cycle mode when VIN > VOUT.
- Load disconnect and reverse current protection, along with short circuit protection.
- Typical operating frequency of 3.25 MHz and available in a 2-mm × 2-mm WSON-8 package.
- Automatic skip mode (PFM) during light loads to maintain efficiency and reduce quiescent current to 30 µA.
Applications
- USB host supplies from a single Li-Ion battery.
- Current limited applications.
- Li-Ion applications.
- Audio applications.
- RF-PA buffer applications.
Q & A
- What is the input voltage range of the TPS61252DSGT? The input voltage range is from 2.3 V to 6.0 V.
- What is the maximum output current of the TPS61252DSGT? The maximum output current is 1.5 A.
- What is the typical operating frequency of the TPS61252DSGT? The typical operating frequency is 3.25 MHz.
- How does the TPS61252DSGT manage input current limit? The input current limit is programmable via a resistor and has an accuracy of ±20% at 500 mA over the full temperature range.
- What protection features does the TPS61252DSGT include? It includes short circuit protection, load disconnect, and reverse current protection.
- What is the quiescent current in skip mode for the TPS61252DSGT? The quiescent current in skip mode is 30 µA.
- What package type and size is the TPS61252DSGT available in? It is available in an 8-pin WSON package measuring 2 mm × 2 mm.
- What applications is the TPS61252DSGT suitable for? It is suitable for USB host supplies, current limited applications, Li-Ion applications, audio applications, and RF-PA buffer applications.
- How does the TPS61252DSGT handle light load conditions? During light loads, the device automatically enters skip mode (PFM) to maintain efficiency and reduce quiescent current.
- Does the TPS61252DSGT have a power good indication feature? Yes, it includes a power good indication feature to indicate appropriate output voltage levels.
