Overview
The TPS561201DDCR, produced by Texas Instruments, is a 1-A synchronous step-down converter designed for high efficiency and ease of use. This device is part of the TPS56120x family and is optimized to operate with a minimum number of external components. It features the proprietary D-CAP2 mode control, which supports low-ESR output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors without the need for complex external compensation circuits. The TPS561201 operates in pulse-skip mode to maintain high efficiency during light load conditions and is available in a 6-pin SOT-23 package.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | - | 17 | V |
| Output Voltage Range | 0.76 | - | 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 |
| Junction Temperature Range | -40 | - | 125 | °C |
Key Features
- D-CAP2 mode control with fast transient response, supporting low-ESR output capacitors without external compensation components.
- Pulse-skip mode (TPS561201) for high efficiency during light load operation.
- Continuous current mode (TPS561208) for consistent operation.
- Low shutdown current less than 10 µA.
- 2% feedback voltage accuracy at 25°C.
- Start-up from pre-biased output voltage.
- Cycle-by-cycle overcurrent limit and hiccup-mode overcurrent protection.
- Non-latch UVP and TSD protections.
- Fixed soft start time of 1.0 ms.
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 TPS561201? The input voltage range is from 4.5 V to 17 V.
- What is the output voltage range of the TPS561201? The output voltage range is from 0.76 V to 7 V.
- What is the maximum output current of the TPS561201? The maximum output current is 1 A.
- What is the switching frequency of the TPS561201? The switching frequency is approximately 580 kHz.
- What mode does the TPS561201 operate in during light load conditions? The TPS561201 operates in pulse-skip mode during light load conditions.
- What type of output capacitors are supported by the D-CAP2 mode control? The D-CAP2 mode control supports low-ESR output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors.
- What is the shutdown current of the TPS561201? The shutdown current is less than 10 µA.
- Does the TPS561201 have overcurrent protection? Yes, it has cycle-by-cycle overcurrent limit and hiccup-mode overcurrent protection.
- What is the soft start time of the TPS561201? The soft start time is 1.0 ms.
- In what package is the TPS561201 available? The TPS561201 is available in a 6-pin SOT-23 package.
