Description

Low-dropout (LDO) linear regulators like the TPS74401RGWR provide an easy-to-use, reliable power-management solution for a wide range of applications. By decreasing capacitive inrush current on startup, the user-programmable soft-start reduces stress on the input power supply. The soft-start feature is consistent, making it ideal for powering a wide range of CPUs and application-specific integrated circuits (ASICs). External regulators can be easily sequenced using the enable input and power-good output. The customer can create a solution that fits the sequencing needs of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements thanks to this total flexibility.

Overload, line, temperature, and process, a precision reference and error amplifier provide 1% accuracy. Without an output capacitor or ceramic output capacitors, the TPS74401RGWR series of LDOs is stable. From TJ = –40°C to 125°C, the device family is fully described. The TPS74401RGWR is available in two 20-pin tiny VQFN packages (a 5-mm × 5-mm RGW package and a 3.5-mm × 3.5-mm RGR package), which results in a very small total solution size. The DDPAK (KTW) package is also available for applications that demand more power dissipation.

Features

? Stable With Any or No Output Capacitor

? Excellent Transient Response

? Open-Drain Power-Good (VQFN Only)

? Packages: 5-mm × 5-mm × 1-mm VQFN (RGW), 3.5-mm × 3.5-mm VQFN (RGR), and DDPAK

? 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 (typical)

? Input Voltage Range: 1.1 V to 5.5 V

? Soft-Start (SS) Pin Provides a Linear Startup With Ramp Time Set by External Capacitor

? 1% Accuracy Over Line, Load, and Temperature

Applications

? Applications With Special Start-Up Time or Sequencing Requirements

? Hot-Swap and Inrush Controls

? FPGA Applications

? DSP Core and I/O Voltages

? Post-Regulation Applications