Overview
The TPS561201DDCT from Texas Instruments is a 1-A synchronous step-down converter designed for high efficiency and ease of use. It is part of the TPS56120x family, which includes the TPS561201 and TPS561208 models. These devices are optimized to operate with a minimum number of external components and are suitable for applications requiring low standby current. The TPS561201DDCT is packaged in a 6-pin SOT-23 package and is specified to operate over a junction temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.5 to 17 | V |
| Output Voltage Range | 0.76 to 7 | V |
| Output Current | 1 | A |
| Switching Frequency | 580 kHz | |
| Feedback Voltage Accuracy (25°C) | 2% | |
| Shutdown Current | < 10 µA | |
| Soft Start Time | 1.0 ms | |
| Package Type | SOT-23 (6-pin) | |
| Body Size | 1.60 mm × 2.90 mm |
Key Features
- D-CAP2™ mode control with fast transient response, supporting low-ESR output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors without external compensation components.
- Pulse-skip mode (TPS561201) for high efficiency during light load operation.
- Continuous current mode (TPS561208) for heavy load conditions.
- Cycle-by-cycle overcurrent limit and hiccup-mode overcurrent protection.
- Non-latch undervoltage protection (UVP) and thermal shutdown (TSD) protections.
- Fixed soft start time of 1.0 ms.
- Low shutdown current of less than 10 µA.
Applications
- Digital TV power supply.
- High definition Blu-ray™ disc players.
- Networking home terminals.
- Digital set-top boxes (STB).
- Surveillance systems.
Q & A
- What is the input voltage range of the TPS561201DDCT? The input voltage range is from 4.5 V to 17 V.
- What is the output current rating of the TPS561201DDCT? The output current rating is 1 A.
- What is the switching frequency of the TPS561201DDCT? The switching frequency is 580 kHz.
- What type of mode control does the TPS561201DDCT use? It uses D-CAP2™ mode control.
- What is the feedback voltage accuracy at 25°C? The feedback voltage accuracy is 2%.
- What is the shutdown current of the TPS561201DDCT? The shutdown current is less than 10 µA.
- What type of protection mechanisms does the TPS561201DDCT have? It has cycle-by-cycle overcurrent limit, hiccup-mode overcurrent protection, non-latch UVP, and TSD protections.
- What is the package type and size of the TPS561201DDCT? It is packaged in a 6-pin SOT-23 package with a body size of 1.60 mm × 2.90 mm.
- What are some typical applications for the TPS561201DDCT? Typical applications include digital TV power supply, high definition Blu-ray™ disc players, networking home terminals, digital set-top boxes (STB), and surveillance systems.
- How does the TPS561201DDCT handle light load conditions? The TPS561201DDCT operates in pulse-skip mode to maintain high efficiency during light load conditions.
