As a member of the SWIFT™ family of DC/DC regulators, the TPS5450 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 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 ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection, and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

The TPS5450 device is available in a thermally enhanced, 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and software tools to aid in 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 5-A Continuous (6-A Peak) Output Current
• High Efficiency Greater than 90% Enabled by 110-m 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
• 18-μA Shutdown Supply Current
• Improved Line Regulation and Transient Response by Input Voltage Feed Forward
• System Protected by Overcurrent Limiting, Overvoltage Protection, and Thermal Shutdown
• Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD? Package
• For SWIFT? Documentation, Application Reports and Design Software, See the TI Website at www.ti.com/swift
• APPLICATIONS
  • High-Density Point-of-Load Regulators
  • LCD Displays, Plasma Displays
  • Battery Chargers
  • 12-V/24-V Distributed Power Systems
• SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
  • Controlled Baseline
  • One Assembly/Test Site
  • One Fabrication Site
  • Available in Military (–55°C/125°C) Temperature Range(1)
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability

(1) Additional temperature ranges are available - contact factory

• Vin (Min) (V)
• 5.5
• Vin (Max) (V)
• 36
• Vout (Min) (V)
• 1.22
• Vout (Max) (V)
• 31
• Iout (Max) (A)
• 5
• Iq (Typ) (uA)
• 3000
• Switching frequency (Min) (kHz)
• 500
• Switching frequency (Max) (kHz)
• 500
• Features
• Enable, Over Current Protection
• Rating
• HiRel Enhanced Product
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 89

TPS5450-EP的完整型号有：TPS5450MDDAREP、V62/90644-01XE，以下是这些产品的关键参数及官网采购报价：

TPS5450MDDAREP，工作温度：-55 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-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS5450MDDAREP的批量USD价格：4.391（1000+）

V62/90644-01XE，工作温度：-55 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-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网V62/90644-01XE的批量USD价格：4.391（1000+）

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