Overview
The TPS562200DDCT is a 2-A synchronous step-down (buck) converter from Texas Instruments, designed for high efficiency and simplicity in power supply applications. This device is part of the TPS562200 series and is optimized to operate with a minimum number of external components, making it ideal for space-constrained designs. It features the proprietary D-CAP2 control topology, which supports low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors without the need for complex external compensation circuits. The device operates in a 6-pin SOT-23 package and is specified to function over an ambient temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current (Max) | 2 | A |
| Input Voltage Range | 4.5 to 17 | V |
| Output Voltage Range | 0.76 to 7 | V |
| Switching Frequency | 650 | kHz |
| High-Side Switch Resistance | 122 | mΩ |
| Low-Side Switch Resistance | 72 | mΩ |
| Feedback Voltage Accuracy (25°C) | 1% | |
| Shutdown Current | < 10 | µA |
| Thermal Shutdown Threshold | 155 | °C |
| Package Type | 6-pin SOT-23 (DDC) |
Key Features
- D-CAP2 control topology for fast transient response and support for low ESR output capacitors.
- Advanced Eco-mode pulse-skip for high efficiency during light load operation.
- Low shutdown current less than 10 µA.
- 1% feedback voltage accuracy at 25°C.
- Start-up from pre-biased output voltage.
- Cycle-by-cycle overcurrent limit and hiccup-mode undervoltage protection.
- Non-latch OVP, UVLO, and TSD protections.
- Fixed soft start: 1 ms.
Applications
- Digital TV power supply.
- High definition Blu-ray Disc™ players.
- Networking home terminal.
- Digital Set Top Box (STB).
Q & A
- What is the maximum output current of the TPS562200DDCT?
The maximum output current of the TPS562200DDCT is 2 A.
- What is the input voltage range for the TPS562200DDCT?
The input voltage range is from 4.5 V to 17 V.
- What is the switching frequency of the TPS562200DDCT?
The switching frequency is 650 kHz.
- What type of control topology does the TPS562200DDCT use?
The device uses the proprietary D-CAP2 control topology.
- What are the key protections available in the TPS562200DDCT?
The device includes cycle-by-cycle overcurrent limit, hiccup-mode undervoltage protection, non-latch OVP, UVLO, and TSD protections.
- How does the Advanced Eco-mode in TPS562200DDCT improve efficiency?
The Advanced Eco-mode maintains high efficiency during light load operation by reducing the switching frequency as the load current decreases.
- What is the thermal shutdown threshold for the TPS562200DDCT?
The thermal shutdown threshold is 155°C.
- What is the package type of the TPS562200DDCT?
The device is packaged in a 6-pin SOT-23 (DDC) package.
- What is the feedback voltage accuracy of the TPS562200DDCT at 25°C?
The feedback voltage accuracy is 1% at 25°C.
- Can the TPS562200DDCT start up from a pre-biased output voltage?
