Overview
The TPS564201DDCR from Texas Instruments is a 4-A synchronous step-down converter designed for high efficiency and minimal external component count. This device operates in the D-CAP2™ mode, which is optimized for low-ESR output capacitors such as specialty polymer and ceramic types. It features fast transient response without the need for external compensation components. The TPS564201 is housed 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
| Specification | Value |
|---|---|
| Input Voltage Range | 4.5 V to 17 V |
| Output Voltage Range | 0.76 V to 7 V |
| Output Current | Up to 4 A |
| Switching Frequency | Nominal 560 kHz |
| Package Type | SOT-23-6 (DDC) |
| Package Size | 1.60 mm × 2.90 mm |
| Feedback Voltage Accuracy | 1.6% at 25°C |
| Shutdown Current | |
| Soft Start Time | 1.0 ms |
Key Features
- D-CAP2™ Mode Control: Supports low-ESR output capacitors with fast transient response and no external compensation.
- Integrated MOSFETs: High-side and low-side MOSFETs with low drain-to-source on-resistance for high efficiency.
- Pulse Skip Mode: Maintains high efficiency during light load conditions by reducing switching frequency.
- Overcurrent Protection: Cycle-by-cycle and hiccup-mode overcurrent protection.
- Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD): Non-latching protections for safe operation.
- Fixed Soft Start: 1.0 ms soft-start time to ensure smooth startup.
Applications
- Digital TV Power Supply: Suitable for powering digital TV systems.
- High Definition Blu-ray™ Disc Players: Ideal for Blu-ray disc players requiring efficient power conversion.
- Networking Home Terminal: Used in networking equipment for reliable power supply.
- Digital Set Top Box (STB): Applicable for set-top box power supply needs.
- Surveillance Systems: Can be used in surveillance systems requiring efficient and reliable power conversion.
Q & A
- What is the input voltage range of the TPS564201DDCR?
The input voltage range is from 4.5 V to 17 V. - What is the maximum output current of the TPS564201DDCR?
The maximum output current is up to 4 A. - What is the switching frequency of the TPS564201DDCR?
The nominal switching frequency is 560 kHz. - What type of output capacitors does the TPS564201DDCR support?
The device supports low-ESR output capacitors such as specialty polymer and ceramic types. - Does the TPS564201DDCR have built-in overcurrent protection?
Yes, it has cycle-by-cycle and hiccup-mode overcurrent protection. - What is the package type and size of the TPS564201DDCR?
The package type is SOT-23-6 (DDC), and the size is 1.60 mm × 2.90 mm. - What is the feedback voltage accuracy of the TPS564201DDCR at 25°C?
The feedback voltage accuracy is 1.6% at 25°C. - Does the TPS564201DDCR have thermal shutdown protection?
Yes, it has thermal shutdown protection that shuts off the device if the temperature exceeds the threshold value. - How long is the soft-start time of the TPS564201DDCR?
The soft-start time is 1.0 ms. - What are some typical applications of the TPS564201DDCR?
Typical applications include digital TV power supply, high definition Blu-ray™ disc players, networking home terminal, digital set top box (STB), and surveillance systems.
