Overview
The TPS62240DRVT from Texas Instruments is a highly efficient synchronous step-down DC-DC converter. This device is designed to provide up to 300-mA output current from a single Li-Ion cell, making it ideal for battery-powered portable applications such as mobile phones and other portable equipment. The converter operates over a wide input voltage range of 2 V to 6 V, supporting various battery types including Li-Ion, two- and three-cell alkaline, and 3.3-V and 5-V input voltage rails.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Input Voltage Range | 2 V to 6 V | Compatible with Li-Ion batteries and other voltage rails |
| Output Current | Up to 300 mA | Maximum output current from a single Li-Ion cell |
| Switching Frequency | 2.25 MHz | Fixed switching frequency |
| Output Voltage | Adjustable from 0.6 V to VIN | Adjustable output voltage using an external feedback divider |
| Quiescent Current | Typical 15 µA | Low quiescent current in power save mode |
| Operating Temperature Range | -40°C to 85°C | Free-air temperature range |
| Package Options | 5-pin SOT, 6-pin WSON | Available in different package types |
| Duty Cycle | 100% | Allows for lowest dropout voltage |
Key Features
- High efficiency greater than 94%
- Power save mode at light load currents to maintain high efficiency
- Output voltage accuracy in PWM mode ±1.5%
- Typical 15-µA quiescent current
- 100% duty cycle for lowest dropout
- Allows for small solution size with small inductors and capacitors
- Available in 5-pin SOT and 6-pin WSON packages
- Supports <1-mm solution height
Applications
The TPS62240DRVT is ideal for battery-powered portable applications such as:
- Mobile phones
- Other portable electronic devices
- Devices requiring high efficiency and low quiescent current
Q & A
- What is the input voltage range of the TPS62240DRVT?
The input voltage range is from 2 V to 6 V, supporting various battery types including Li-Ion, two- and three-cell alkaline, and 3.3-V and 5-V input voltage rails.
- What is the maximum output current of the TPS62240DRVT?
The maximum output current is up to 300 mA from a single Li-Ion cell.
- What is the switching frequency of the TPS62240DRVT?
The switching frequency is fixed at 2.25 MHz.
- How is the output voltage adjusted on the TPS62240DRVT?
The output voltage is adjustable using an external feedback divider.
- What is the quiescent current of the TPS62240DRVT in power save mode?
The typical quiescent current is 15 µA in power save mode.
- What are the package options available for the TPS62240DRVT?
The device is available in 5-pin SOT and 6-pin WSON packages.
- What is the operating temperature range of the TPS62240DRVT?
The operating temperature range is from -40°C to 85°C.
- Does the TPS62240DRVT support 100% duty cycle?
Yes, it supports 100% duty cycle for the lowest dropout voltage.
- What are some typical applications for the TPS62240DRVT?
Typical applications include mobile phones and other portable electronic devices requiring high efficiency and low quiescent current.
- How does the power save mode operate in the TPS62240DRVT?
The power save mode is optimized for low output voltage ripple and maintains high efficiency over the entire load current range).
