TPS54202DDCR - 4.5V-28V 2A Sync Buck Converter | TI
MPN: TPS54202DDCR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.61 | $61.00 |
| 500 | $0.48 | $240.00 |
| 1,000 | $0.38 | $380.00 |
Drop-in alternatives for TPS54202DDCR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS54202HDDCR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS54302DDCR
✅ Drop-In✓ In Stock
$0.61 / Unit
View Datasheet →TPS561201DDCR
✅ Drop-In✓ In Stock
$0.48 / Unit
View Datasheet →TPS54202DDCT
✅ Drop-In📋 Reference alternative (not in catalog)
TPS54202DDCR
✅ Drop-In✓ In Stock
$0.38 / Unit
View Datasheet →TPS54202DDCR Maximum Ratings & Electrical Characteristics
| Function | Step-Down (Buck) |
| Output Current | 2 A |
| Input Voltage Range | 4.5 V to 28 V |
| Output Voltage Range | 0.596 V to 26 V |
| Switching Frequency | 500 kHz |
| Synchronous Rectification | Yes |
| Number of Outputs | 1 |
| Package | SOT-23-THN (DDC) 6-pin |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to +125°C (junction) |
| Soft Start | Internal 5 ms |
| Light Load Efficiency | Eco-mode™ |
| EMI Friendly | Yes |
| RoHS Status | Compliant |
| MSL Level | 1 |
TPS54202DDCR Pin Configuration
| Pin 1 | BOOT — Bootstrap capacitor connection for high-side FET driver |
| Pin 2 | VIN — Input supply voltage |
| Pin 3 | EN — Enable pin (active high) |
| Pin 4 | RT/CLK — Timing resistor or external clock input |
| Pin 5 | GND — Ground |
| Pin 6 | SW — Switch node output |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS54202DDCR is suitable for 6 applications: Set-Top Boxes, Broadband Communications, Industrial Power Supplies, Networking Equipment, Portable Electronics, Test and Measurement.
Set-Top Boxes
The TPS54202DDCR efficiently steps down a 12V input to 3.3V or 5V rails for digital logic and tuner circuits. Its 2A output current handles the combined load of the processor, memory, and interface ICs. The 500kHz switching frequency allows the use of small inductors, saving PCB space in compact set-top box designs. The EMI-friendly design helps meet EMC standards, reducing the need for additional filtering components.
Recommended
Broadband Communications
In broadband modems and routers, the TPS54202DDCR provides a clean 3.3V or 1.8V rail for SoCs and PHY transceivers. The wide input range (4.5V to 28V) accommodates various power adapters, while the synchronous rectification ensures high efficiency to minimize heat in enclosed enclosures. The internal soft-start prevents inrush current during hot-plug events, protecting upstream components.
Recommended
Industrial Power Supplies
The TPS54202DDCR is well-suited for industrial control systems that operate from 24V buses. Its 28V maximum input provides ample headroom for voltage transients. The -40°C to +125°C junction temperature range ensures reliable operation in harsh environments. The device's integrated MOSFETs and internal compensation reduce component count, improving MTBF in always-on industrial equipment.
Recommended
Networking Equipment
In switches and routers, the TPS54202DDCR powers FPGAs, ASICs, and DDR memory. The adjustable output down to 0.596V supports modern low-voltage cores. The 500kHz switching frequency allows the use of small, low-profile inductors, enabling thin rack-mount designs. The Eco-mode™ feature improves efficiency during idle periods, reducing power consumption in always-on network infrastructure.
Recommended
Portable Electronics
The TPS54202DDCR's small SOT-23 package and high efficiency make it ideal for portable devices like portable media players and handheld instruments. The wide input range allows operation from 2-cell Li-ion batteries (up to 8.4V) or USB power (5V). The Eco-mode™ extends battery life by reducing switching losses at light loads. The integrated soft-start prevents battery voltage dips during startup.
Recommended
Test and Measurement
In bench instruments and data acquisition systems, the TPS54202DDCR provides clean, low-noise rails for analog and digital circuits. The 500kHz switching frequency is above the audio band, reducing interference with sensitive measurements. The adjustable output allows precise voltage setting for reference circuits. The device's thermal shutdown protection ensures safe operation in enclosed test equipment.
Recommended
Recommended Products Summary
Engineering reference data for TPS54202DDCR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS54202HDDCR | TPS54302DDCR | TPS561201DDCR |
|---|---|---|---|---|
| Package | SOT-23-THN (DDC) 6-pin | SOT-23-THN (DDC) 6-pin | SOT-23-THN (DDC) 6-pin | SOT-23-THN (DDC) 6-pin |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 2 A | 2 A | 3 A | 1 A |
| Input Voltage Range | 4.5V to 28V | 4.5V to 28V | 4.5V to 28V | 4.5V to 17V |
| Switching Frequency | 500 kHz | 500 kHz | 500 kHz | 580 kHz |
| AEC-Q100 Qualified | No | Yes | No | No |
| Light Load Efficiency | Eco-mode™ | Eco-mode™ | Eco-mode™ | Eco-mode™ |
| Price (1pc) | $0.85 | $0.95 | $0.90 | $0.70 |
Key Differentiators
- Wide input voltage range up to 28V (vs TPS561201DDCR)
- Higher output current of 2A (vs TPS561201DDCR)
- Automotive-grade variant available (vs TPS54202HDDCR)
Design Notes
For optimal performance, place the input capacitor (10µF) and output capacitor (22µF) as close as possible to the VIN and SW pins respectively. Use a solid ground plane and connect the GND pin directly to it. The bootstrap capacitor (0.1µF) should be placed near the BOOT and SW pins. Keep the feedback trace short and away from the SW node to avoid noise coupling.
The SOT-23-THN package has a thermal resistance of approximately 85°C/W (theta_JA). At 12V input, 3.3V output, and 2A load, power dissipation is about 1.2W, resulting in a temperature rise of 102°C. Ensure adequate copper area on the PCB for heat spreading. For high ambient temperatures, consider derating the output current or using a larger package alternative.
Do not exceed the absolute maximum input voltage of 30V. Ensure the EN pin is not left floating; tie it to VIN if not used. The RT/CLK pin can be left open for internal 500kHz operation, but if an external clock is used, ensure it is within the specified range. Use a Schottky diode from SW to GND if the output is shorted to ground to protect the low-side FET.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified; use TPS54202HDDCR for automotive.
