The TPS5430-Q1 is a high output current PWM converter that integrates a low-resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions, an undervoltage lockout (UVLO) circuit to prevent start-up until the input voltage reaches 5.5 V, an internally set slow-start circuit to limit inrush currents, and a voltage feed-forward circuit to improve the transient response. Using the enable (ENA) pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection (OVP), and thermal shutdown. To reduce design complexity and external component count, the TPS5430-Q1 feedback loop is internally compensated. The TPS5430-Q1 regulates a wide variety of power sources including 24-V buses.

The TPS5430-Q1 device is available in a thermally enhanced, easy-to-use 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and the WEBENCH^® software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

• Qualified for Automotive Applications
• Wide Input Voltage Range: 5.5 V to 36 V
• Up to 3-A Continuous (4-A Peak) Output Current
• High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch
• Wide Output Voltage Range: Adjustable Down to 1.22 V With 1.5% Initial Accuracy
• Internal Compensation Minimizes External Parts Count
• Fixed 500-kHz Switching Frequency for Small Filter Size
• Improved Line Regulation and Transient Response by Input Voltage Feed Forward
• System Protected by Overcurrent Limiting, Overvoltage Protection, and Thermal Shutdown
• –40°C to 125°C Operating Junction Temperature Range
• Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD Package

• Vin (Min) (V)
• 5.5
• Vin (Max) (V)
• 36
• Vout (Min) (V)
• 1.22
• Vout (Max) (V)
• 31
• Iout (Max) (A)
• 3
• Iq (Typ) (uA)
• 3000
• Switching frequency (Min) (kHz)
• 500
• Switching frequency (Max) (kHz)
• 500
• Features
• Enable, Over Current Protection, Soft Start Fixed
• Rating
• Automotive
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 89

TPS5430-Q1的完整型号有：TPS5430QDDARQ1，以下是这些产品的关键参数及官网采购报价：

TPS5430QDDARQ1，工作温度：-40 to 125，封装：SO PowerPAD (DDA)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS5430QDDARQ1的批量USD价格：1.996（1000+）

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