描述 Description

The TPS74401 low-dropout (LDO) linear regulator provides an easy-to-use robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and well-suited for powering many different types of processors and ASICs. The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility permits the user to configure a solution that will meet the sequencing requirements of FPGAs, DSPs, and other applications with specific start-up requirements. A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. Each LDO is stable with low-cost ceramic output capacitors and the device is fully specified from –55°C to 125°C.

特性 Features

? Soft-Start (SS) Pin Provides a Linear Startup with Ramp Time Set by External Capacitor
? 1% Accuracy Over Line, Load, and Temperature
? Supports Input Voltages as Low as 0.9 V with External Bias Supply
? Adjustable Output (0.8 V to 3.6 V)
? Ultra-Low Dropout: 115 mV at 3.0 A (typ)
? Stable with Any or No Output Capacitor
? Excellent Transient Response
? Available in 5 mm × 5 mm × 1 mm QFN Package
? Active High Enable
? SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
? Controlled Baseline
? One Assembly/Test Site
? One Fabrication Site
? Available in Military (–55°C/125°C) Temperature Ranges
? Extended Product Life Cycle
? Extended Product-Change Notification
? Product Traceability

? APPLICATIONS
? FPGA Applications
? DSP Core and I/O Voltages
? Post-Regulation Applications
? Applications with Special Start-Up Time or Sequencing Requirements
? Hot-Swap and Inrush Controls


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