TPS54202DDCR - 4.5V-28V 2A Sync Buck Converter | TI
MPN: TPS54202DDCR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.52 | $5.20 |
| 100 | $0.31 | $31.00 |
| 500 | $0.2 | $100.00 |
| 1,000 | $0.15 | $150.00 |
Drop-in alternatives for TPS54202DDCR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS54202HDDCR
β Drop-Inπ Reference alternative (not in catalog)
TPS542021DDCR
β Drop-Inπ Reference alternative (not in catalog)
TPS54302DDCR
β Drop-Inβ In Stock
$0.24 / Unit
View Datasheet βTPS561201DDCR
β‘ Same Packageβ In Stock
$0.29 / Unit
View Datasheet βTPS54283
β‘ Same Packageβ In Stock
$2.18 / Unit
View Datasheet βMP2451DT
β‘ Same Packageπ Reference alternative (not in catalog)
TPS54202DDCR Maximum Ratings & Electrical Characteristics
| Topology | Synchronous Buck (Step-Down) |
| Input Voltage Range | 4.5 V to 28 V |
| Maximum Output Current | 2 A |
| Output Voltage Range | 0.596 V to 26 V (adjustable) |
| Number of Outputs | 1 |
| Switching Frequency | 500 kHz (fixed) |
| Quiescent Current | 45 uA |
| Soft Start | 5 ms internal |
| Control Architecture | Current-mode, internal compensation |
| Light-Load Mode | Advanced Eco-mode |
| Operating Temperature | -40C to +125C (TJ) |
| Package | SOT-23-6 Thin (DDC) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Protection Features | Overcurrent, thermal shutdown |
| EMI Performance | EMI-friendly design |
| RoHS Status | Compliant |
TPS54202DDCR Pin Configuration
| Pin 1 | BOOT β Bootstrap capacitor connection for high-side gate drive |
| Pin 2 | GND β Ground reference and thermal path |
| Pin 3 | SW β Switch node - connect to power inductor |
| Pin 4 | VIN β Input supply, 4.5V to 28V |
| Pin 5 | EN β Enable input |
| Pin 6 | VSENSE β Feedback input for output voltage setting |
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 Box Power Supply, Industrial 24V Bus Point-of-Load, Networking and Broadband Equipment, Portable and Battery-Powered Instruments, Motor Drive and Embedded Control Auxiliary Rails, LED Lighting and Display Backlight Bias.
Set-Top Box Power Supply
In set-top boxes, the TPS54202DDCR efficiently steps a 12V adapter input down to 3.3V or 1.8V rails for SoC, memory, and tuner circuitry. Its 500kHz fixed frequency keeps the inductor small, while the integrated MOSFETs remove the external Schottky diode, cutting BOM cost. Advanced Eco-mode lowers standby power when the box is idle, and the 5ms soft-start limits inrush at plug-in, protecting upstream adapters and hot-swap paths.
Recommended
Industrial 24V Bus Point-of-Load
The 28V maximum input provides headroom above 24V industrial rails, making the TPS54202DDCR ideal for PLC I/O modules, sensors, and motor-control logic supplies. The -40C to +125C junction range covers factory-floor temperature extremes, and integrated overcurrent plus thermal shutdown protect against fault conditions. At 24V in and 5V out at 1A, the synchronous architecture maintains high efficiency, minimizing heatsinking in sealed enclosures.
Recommended
Networking and Broadband Equipment
Routers, switches, and broadband CPE designs use the TPS54202DDCR to generate 3.3V, 2.5V, and 1.8V logic rails from a 12V intermediate bus. The EMI-friendly switching design eases conducted and radiated emissions compliance in dense, antenna-proximate hardware. The small 2.5mm x 2.9mm SOT-23-6 footprint fits crowded PCBs near Ethernet PHYs and processors, while 45uA quiescent current supports energy-efficient and low-power standby modes.
Recommended
Portable and Battery-Powered Instruments
Handheld test instruments and battery-powered devices benefit from the TPS54202DDCR's Advanced Eco-mode, which folds back switching frequency at light loads to extend battery runtime. The 4.5V minimum input supports single-cell Li-ion stacks and multi-cell alkaline packs, while the 2A capability handles peak transmit or display loads. Internal soft-start and current-mode control deliver predictable startup from source-limited batteries without external compensation components.
Recommended
Motor Drive and Embedded Control Auxiliary Rails
In motor-drive systems using C2000 MCUs or gate-driver ICs, the TPS54202DDCR generates clean 5V and 3.3V auxiliary rails from 12V or 24V buses. Its EMI-friendly switching reduces noise coupling into sensitive ADC and gate-drive circuits, and the 500kHz frequency allows compact magnetics away from power stages. The 2A output covers MCU, gate-driver bias, and communication-interface loads simultaneously in typical drives.
Recommended
LED Lighting and Display Backlight Bias
Industrial LED luminaires and display modules use the TPS54202DDCR to derive 12V or 5V bias rails from 24V mains-derived front ends. The wide 28V input tolerates bus transients, and high synchronous efficiency limits thermal rise inside sealed lighting housings. Combined with a dedicated LED driver downstream, the converter provides a stable, low-ripple supply that prevents visible flicker and keeps EMI within lighting-environment limits.
Recommended
Recommended Products Summary
Engineering reference data for TPS54202DDCR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS54202HDDCR | TPS542021DDCR | TPS54302DDCR | TPS561201DDCR |
|---|---|---|---|---|---|
| Package | SOT-23-6 Thin (DDC) | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 4.5 V to 28 V | 4.5 V to 28 V | 4.5 V to 30 V | 4.5 V to 28 V | 4.5 V to 17 V |
| Maximum Output Current | 2 A | 2 A | 2 A | 3 A | 1 A |
| Output Voltage Range | 0.596 V to 26 V | 0.596 V to 26 V | [DATA_NEEDED] | 0.6 V | 0.8 V |
| Switching Frequency | 500 kHz | 500 kHz | 500 kHz | 480 kHz | 580 kHz |
| Automotive Grade (AEC-Q100) | No | Yes (Q1) | No | No | No |
| Lifecycle Status | Active | Active | Active (new) | Active | Active |
Key Differentiators
- True drop-in automotive upgrade available (vs TPS54202HDDCR)
- Wider input headroom than lower-voltage siblings (vs TPS561201DDCR)
- Balanced cost/power-density position (vs TPS54302DDCR)
Design Notes
Keep the loop from VIN capacitor, VIN pin, SW pin, inductor, and GND as short and narrow as possible to minimize radiated EMI. Place the 10uF input ceramic capacitor within 2-3mm of VIN/GND, and route the feedback trace away from the SW node and inductor. TI's TPS54202 EVM layout in the datasheet is a proven reference for the SOT-23-6 (DDC) footprint.
At 24V input, 5V/2A output, the converter dissipates only conduction and switching losses thanks to the synchronous architecture, but copper area under the package still matters. Provide at least a few square cm of ground pour connected to the GND pin vias to keep junction temperature well below the 125C limit in enclosed industrial products.
Do not reuse external components blindly when swapping to a same-footprint but different-current part: TPS54302 (3A) and TPS561201 (1A) have different recommended inductance, output capacitance, and feedback ratios. Also ensure the input capacitor voltage rating is at least 35V for 24V bus designs, and verify BOOT capacitor value (typically 0.1uF) per datasheet.
Compliance Information
RoHS compliant and lead-free per LCSC/JLCPCB listings. Not AEC-Q100 qualified; use TPS54202HDDCR for automotive.
