Overview
The TPS54240DGQR from Texas Instruments is a high-performance, 42-V, 2.5-A step-down DC-DC converter designed for a wide range of applications. This device features an integrated high-side MOSFET and operates with an input voltage range of 3.5 V to 42 V. It is optimized for high efficiency, particularly at light loads, thanks to its pulse skipping Eco-Mode™. The TPS54240DGQR is suitable for systems requiring robust power management with minimal power loss and high reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.5 V to 42 V |
| Output Current | Up to 2.5 A |
| High-Side MOSFET Resistance | 200 mΩ |
| Operating Quiescent Current | 138 µA |
| Shutdown Current | 1.3 µA |
| Switching Frequency Range | 100 kHz to 2.5 MHz |
| Internal Voltage Reference | 0.8 V |
| Package Options | 10-Pin HVSSOP, 10-Pin 3-mm x 3-mm VSON with PowerPAD™ |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- High efficiency at light loads with pulse skipping Eco-Mode™
- Adjustable slow start and sequencing
- UV and OV power good output
- Adjustable UVLO voltage and hysteresis
- Synchronizes to external clock
- Frequency foldback and thermal shutdown for overload protection
- Supported by WEBENCH® software tool
Applications
The TPS54240DGQR is versatile and can be used in various applications, including:
- Industrial power supplies
- Automotive systems
- Telecommunications equipment
- Consumer electronics requiring high-efficiency power conversion
- Universal car chargers for USB devices
Q & A
- What is the input voltage range of the TPS54240DGQR?
The input voltage range is 3.5 V to 42 V.
- What is the maximum output current of the TPS54240DGQR?
The maximum output current is up to 2.5 A.
- What is the operating quiescent current of the TPS54240DGQR?
The operating quiescent current is 138 µA.
- What are the package options for the TPS54240DGQR?
The device is available in 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm VSON packages with PowerPAD™.
- Does the TPS54240DGQR support synchronization with an external clock?
Yes, it supports synchronization with an external clock.[
- What is the purpose of the slow-start pin in the TPS54240DGQR?
The slow-start pin controls the output voltage startup ramp and can also be configured for sequencing and tracking.[
- How does the TPS54240DGQR protect against overload conditions?
The device features frequency foldback and thermal shutdown to protect against overload conditions.[
- What is the internal voltage reference of the TPS54240DGQR?
The internal voltage reference is 0.8 V.[
- Is the TPS54240DGQR supported by any software tools?
Yes, it is supported by the WEBENCH® software tool.[
- What is the shutdown current of the TPS54240DGQR when the enable pin is low?
The shutdown current is 1.3 µA when the enable pin is low.[
