Basic Product Information
Part Number: TPS5430DDAR
| Field |
Value |
| Manufacturer |
Texas Instruments (TI) |
| Device Type |
TPS5430DDAR |
| Package |
HSOIC-8 (SO PowerPAD, DDA) |
| Compliance |
RoHS / REACH Compliant |
| Grade |
Industrial |
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Input Voltage Range |
5.5 ~ 36 |
V |
| Output Voltage Range |
1.221 ~ 32.04 (Adjustable) |
V |
| Output Current (Continuous) |
3 |
A |
| Output Current (Peak) |
4 |
A |
| Switching Frequency |
500 |
kHz |
| Reference Voltage (VSENSE) |
1.221 (1.5% accuracy) |
V |
| High-Side MOSFET Rds(on) |
110 |
mΩ |
| Efficiency (Max) |
95 |
% |
| Quiescent Current (Operating) |
3 |
mA |
| Shutdown Current (ENA low) |
18 |
μA |
| Duty Cycle (Max) |
87 |
% |
| Operating Junction Temperature |
-40 ~ +125 |
°C |
| UVLO Threshold |
5.5 |
V |
| Topology |
Buck (Step-Down) |
| Number of Outputs |
1 |
| Output Type |
Adjustable |
Core Features & Advantages
The TPS5430DDAR delivers a high-efficiency, wide-input-range buck conversion solution with integrated power MOSFET, minimizing external component count while providing robust protection for demanding power supply designs.
- Primary Function: Step-down DC-DC conversion from wide input rails (5.5 V–36 V) to adjustable low-voltage outputs (down to 1.221 V) at up to 3 A continuous current, targeting 24 V bus and industrial power architectures.
- Advantages:
- Integrated 110 mΩ High-Side N-Channel MOSFET: Eliminates external switch transistor, reduces BOM count and board area, and enables up to 95% efficiency — critical for thermally constrained enclosures and battery-powered systems.
- Internal Compensation with Voltage Feedforward: Simplifies loop design by removing the need for external compensation networks, while input voltage feedforward maintains consistent transient response across the entire 5.5 V–36 V input range — no redesign needed when input rails change.
- Comprehensive Protection Suite: Cycle-by-cycle overcurrent limiting, overvoltage protection, and thermal shutdown safeguard both the converter and downstream loads. An active-high ENA pin reduces shutdown current to 18 μA, enabling power sequencing in multi-rail systems.
Typical Application Scenarios
- Industry: Industrial / Telecommunications / Automotive / Consumer Electronics
- Equipment: Industrial PLCs, telecom base stations, routers/switches, automotive infotainment, set-top boxes, medical monitoring instruments
- Use Cases:
- 24 V Bus to 5 V / 3.3 V Point-of-Load (POL) Conversion: Directly steps down 24 V industrial bus rails to logic-level voltages at 3 A, replacing two-stage conversion schemes and reducing component count, cost, and board area in factory automation controllers.
- 12 V Battery to 5 V Regulation in Automotive Systems: Converts nominal 12 V battery voltage (9 V–16 V cranking range) to stable 5 V for infotainment MCUs and sensor interfaces, with internal slow-start limiting inrush current during ignition cycles.
- Telecom Rack Power Distribution: Provides efficient 48 V-to-intermediate (via pre-regulator) or 12 V-to-1.8 V/2.5 V/3.3 V POL conversion in routers and switches, where 95% efficiency minimizes thermal load in densely packed rack equipment.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$0.35 – $0.80 |
USD |
| Overseas B2B |
$0.50 – $4.46 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| TPS5431DDAR |
Lower max input (23 V vs. 36 V), same 3 A output and pinout |
12 V / 15 V rail systems with lower voltage headroom |
| TPS5450DDAR |
Higher output current (5 A vs. 3 A), same package and input range |
Higher power POL designs requiring >3 A load current |
| LMR33640ADDAR |
Next-gen 4 A SIMPLE SWITCHER®, synchronous rectification, higher light-load efficiency |
New designs prioritizing light-load efficiency and EMI performance |
| TPS54302DDCR |
4.5–28 V input, 3 A output, synchronous, EMI-friendly, SOT-23-6 package |
Space-constrained designs requiring smaller footprint |
