Overview
The TPS62260DRVR from Texas Instruments is a highly efficient synchronous step-down DC/DC converter. This device is designed to provide up to 600-mA output current from a single Li-Ion cell, making it ideal for battery-powered applications such as mobile phones, smartphones, and other portable equipment. The TPS62260DRVR operates over a wide input voltage range of 2 V to 6 V, supporting not only Li-Ion batteries but also two- and three-cell alkaline batteries, as well as 3.3-V and 5-V input voltage rails.
The converter operates at a fixed-switching frequency of 2.25 MHz and features a power save mode at light load currents to maintain high efficiency across the entire load current range. This power save mode is optimized for low-output voltage ripple, and the device can be forced into fixed frequency pulse-width modulation (PWM) mode for low noise applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2 V to 6 V | V |
| Output Current | Up to 600 mA | A |
| Switching Frequency | 2.25 MHz | Hz |
| Output Voltage Accuracy (PWM Mode) | ±1.5% | % |
| Quiescent Current | Typical 15 µA | A |
| Duty Cycle | 100% for Lowest Dropout | % |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Options | 5-pin SOT, 6-pin 2-mm × 2-mm × 0.8-mm WSON (DRV) |
Key Features
- High Efficiency Step-Down Converter
- Output Current up to 600 mA
- Wide Input Voltage Range (2 V to 6 V) for Li-ion Batteries with Extended Voltage Range
- 2.25-MHz Fixed Frequency Operation
- Power Save Mode at Light Load Currents
- Output Voltage Accuracy in PWM Mode ±1.5%
- Typical 15-µA Quiescent Current
- 100% Duty Cycle for Lowest Dropout
- Voltage Positioning at Light Loads
- Available in SOT (5) and WSON (6) Packages
- Allows for <1-mm Solution Height
Applications
- Mobile Phones and Smartphones
- Low Power DSP Supply
- Portable Media Players
- Point-of-Load (POL) Applications
Q & A
- What is the maximum output current of the TPS62260DRVR?
The TPS62260DRVR can provide up to 600 mA of output current.
- What is the input voltage range of the TPS62260DRVR?
The input voltage range is from 2 V to 6 V.
- At what frequency does the TPS62260DRVR operate?
The device operates at a fixed frequency of 2.25 MHz.
- What is the quiescent current of the TPS62260DRVR?
The typical quiescent current is 15 µA.
- How does the power save mode work in the TPS62260DRVR?
The power save mode is optimized for low-output voltage ripple and is active at light load currents, transitioning automatically from PFM mode to fixed frequency PWM mode.
- What are the package options for the TPS62260DRVR?
The device is available in 5-pin SOT and 6-pin 2-mm × 2-mm × 0.8-mm WSON (DRV) packages.
- What is the operating temperature range of the TPS62260DRVR?
The operating temperature range is from -40°C to 85°C.
- How does the TPS62260DRVR handle voltage positioning at light loads?
The device features voltage positioning at light loads, regulating the output voltage 1% higher than the nominal value to provide more headroom for voltage drops and increases.
- Can the TPS62260DRVR be used in low noise applications?
Yes, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high for low noise applications.
- What happens when the EN pin is pulled low?
When the EN pin is pulled low, the device enters shutdown mode, disabling all internal circuits.
