Overview
The TPS62240DDCR is a highly efficient synchronous step-down DC-DC converter produced by Texas Instruments. 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. It operates over a wide input voltage range of 2 V to 6 V, supporting two- and three-cell alkaline, 3.3-V, and 5-V input voltage rails.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2 V to 6 V |
| Output Current | Up to 300 mA |
| Switching Frequency | 2.25 MHz |
| Output Voltage Accuracy in PWM Mode | ±1.5% |
| Adjustable Output Voltage | 0.6 V to VIN |
| Quiescent Current | Typical 15 µA |
| Operating Temperature Range | -40°C to 85°C |
| Package Types | 5-pin SOT-23-THN (DDC), 6-pin 2-mm × 2-mm × 0.8-mm WSON |
Key Features
- High Efficiency - Greater than 94%
- Power Save Mode at Light Load Currents
- 100% Duty Cycle for Lowest Dropout
- Typical 15-µA Quiescent Current
- Allows <1-mm Solution Height
- Optimized Power Save Mode for Low Output Voltage Ripple
- Forced Fixed-Frequency PWM Mode by Pulling the MODE Pin High
- Shutdown Mode with Current Consumption Less than 1 µA
Applications
The TPS62240DDCR is particularly suited for battery-powered portable applications, including:
- Mobile phones
- Other portable electronic devices
- Devices requiring high efficiency and low noise operation
- Applications with limited board space due to its small solution size
Q & A
- What is the input voltage range of the TPS62240DDCR?
The input voltage range is from 2 V to 6 V, supporting various battery types including Li-Ion, two- and three-cell alkaline, 3.3-V, and 5-V input voltage rails.
- What is the maximum output current of the TPS62240DDCR?
The maximum output current is up to 300 mA.
- What is the switching frequency of the TPS62240DDCR?
The switching frequency is 2.25 MHz.
- How accurate is the output voltage in PWM mode?
The output voltage accuracy in PWM mode is ±1.5%.
- What is the quiescent current of the TPS62240DDCR?
The typical quiescent current is 15 µA.
- What are the available package types for the TPS62240DDCR?
The device is available in a 5-pin SOT-23-THN (DDC) and a 6-pin 2-mm × 2-mm × 0.8-mm WSON package.
- What is the operating temperature range of the TPS62240DDCR?
The operating temperature range is from -40°C to 85°C.
- How does the power save mode operate in the TPS62240DDCR?
The power save mode is optimized for low output voltage ripple and is activated at light load currents to maintain high efficiency.
- Can the TPS62240DDCR be forced into fixed-frequency PWM mode?
Yes, the device can be forced into fixed-frequency PWM mode by pulling the MODE pin high.
- What is the current consumption in shutdown mode?
In shutdown mode, the current consumption is reduced to less than 1 µA.
