Overview
The TPS54202DDCT is a high-performance, synchronous buck converter from Texas Instruments. This device is designed to operate over a wide input voltage range of 4.5 V to 28 V and can deliver a continuous output current of up to 2 A. It features integrated 148-mΩ and 78-mΩ MOSFETs, which contribute to its high power density and small footprint. The TPS54202DDCT is packaged in a SOT-23 (6) package, making it suitable for applications where space is limited.
The converter includes several advanced features such as a fixed 500-kHz switching frequency, frequency spread spectrum for EMI reduction, and an advanced Eco-mode™ for improved light load efficiency. Additionally, it has internal loop compensation, overcurrent protection, overvoltage protection, and thermal shutdown to ensure reliable operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | - | 28 | V |
| Output Current | - | - | 2 | A |
| Switching Frequency | 390 | 500 | 630 | kHz |
| Shutdown Quiescent Current | - | 2 | - | μA |
| Quiescent Current | - | 45 | - | μA |
| Soft-Start Time | - | 5 | - | ms |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Thermal Shutdown Temperature | - | 155 | - | °C |
Key Features
- Wide input voltage range of 4.5 V to 28 V
- Integrated 148-mΩ and 78-mΩ MOSFETs for high efficiency
- Fixed 500-kHz switching frequency with frequency spread spectrum for EMI reduction
- Advanced Eco-mode™ for improved light load efficiency
- Internal loop compensation and 5-ms soft-start time
- Overcurrent protection with hiccup mode, overvoltage protection, and thermal shutdown
- Pulse skip mode for light load conditions
- Small footprint SOT-23 (6) package
Applications
- 12-V and 24-V distributed power-bus supplies
- Industrial applications, including white goods
- Consumer electronics such as audio equipment, set-top boxes (STBs), and digital TVs (DTVs)
- Printers and other office equipment
Q & A
- What is the input voltage range of the TPS54202DDCT?
The input voltage range is from 4.5 V to 28 V.
- What is the maximum output current of the TPS54202DDCT?
The maximum output current is 2 A.
- What is the switching frequency of the TPS54202DDCT?
The switching frequency is fixed at 500 kHz, with a frequency spread spectrum for EMI reduction.
- Does the TPS54202DDCT have built-in overcurrent protection?
Yes, it has cycle-by-cycle current limiting and hiccup mode protection for both MOSFETs.
- What is the purpose of the Eco-mode™ in the TPS54202DDCT?
The Eco-mode™ is designed to improve light load efficiency by operating in pulse-skipping mode.
- What is the thermal shutdown temperature of the TPS54202DDCT?
The thermal shutdown temperature is typically 155°C.
- What package type is the TPS54202DDCT available in?
The device is packaged in a SOT-23 (6) package.
- Does the TPS54202DDCT have internal loop compensation?
Yes, it includes internal loop compensation.
- What is the soft-start time of the TPS54202DDCT?
The soft-start time is typically 5 ms.
- What are some common applications for the TPS54202DDCT?
Common applications include 12-V and 24-V distributed power-bus supplies, industrial and consumer electronics, and office equipment like printers.
