Texas Instruments TPS5430DDA
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-PowerSOIC (0.154", 3.90mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 36V |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Current - Output | 3A |
| Supplier Device Package | 8-SO PowerPad |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 500kHz |
| Synchronous Rectifier | No |
| Voltage - Output (Min/Fixed) | 1.221V |
| Voltage - Output (Max) | 32.04V |
| Voltage - Input (Min) | 5.5V |
| Package | Tube |
| Product Status | Active |
| Base Product Number | TPS5430 |
| REACH Status | REACH Unaffected |
| Standard Package | 75 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Buck Switching Regulator IC Positive Adjustable 1.221V 1 Output 3A 8-PowerSOIC
The TPS5430DDA is a high-efficiency, 3-A, step-down (buck) DC-DC converter from Texas Instruments, designed for a wide range of industrial, automotive, and consumer applications. This monolithic integrated circuit combines a high-performance voltage regulator with advanced control features, enabling stable power conversion with minimal external components. The device operates over an input voltage range of 5.5V to 36V, making it suitable for systems powered by batteries, AC adapters, or industrial power supplies. With a fixed 500-kHz switching frequency, the TPS5430DDA ensures efficient power delivery while minimizing output ripple and electromagnetic interference (EMI). Its integrated N-channel MOSFET provides low conduction losses, achieving up to 95% efficiency under optimal conditions.
The TPS5430DDA incorporates multiple protection features to enhance system reliability, including thermal shutdown, overcurrent protection (OCP), and undervoltage lockout (UVLO). These safeguards prevent damage during fault conditions such as short circuits or excessive load currents. The device also supports adjustable output voltage (from 1.22V to 31V) via an external resistor divider, offering flexibility for diverse design requirements. Its compact 8-pin SOIC (DDA) package ensures space-efficient PCB layouts, while the internal compensation network simplifies design and reduces component count. Additionally, the enable pin allows for power sequencing and low-power shutdown modes, further optimizing energy consumption in portable applications.
Designed for robustness, the TPS5430DDA excels in demanding environments with its wide operating temperature range (-40°C to +125°C) and excellent load/line transient response. Its current-mode control architecture ensures fast regulation under dynamic load conditions, making it ideal for applications such as point-of-load (POL) converters, networking equipment, automotive infotainment systems, and industrial automation. The device also complies with AEC-Q100 standards for automotive-grade reliability, ensuring long-term performance in harsh conditions. Evaluation modules (EVMs) and design tools, including WEBENCH® Power Designer, are available to streamline prototyping and system integration.
Alternative buck converter Models with Key Features:
● TPS54302: 3-A, 4.5V–28V input, adjustable frequency (300 kHz–2.2 MHz), smaller package (SOT-23).
● TPS54360: 3.5-A, 4.5V–60V input, adjustable frequency (100 kHz–2.5 MHz), enhanced EMI performance.
● LM2675: 3-A, 8V–40V input, fixed-frequency (260 kHz), simpler design with fewer external components.
● LMR33630: 3-A, 4V–36V input, synchronous rectification, ultra-low quiescent current for battery-powered systems.
