描述 Description

The TPS74901 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 during 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 meets the sequencing requirements of FPGAs, DSPs, and other applications with special start-up requirements. A precision reference and error amplifier deliver 2% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor ≥ 2.2 μF, and the device is fully specified from –40°C to 125°C. The TPS74901 is offered in a small (3 mm × 3 mm) VSON package and a small (5-mm × 5-mm) VQFN package, yielding a highly compact total solution size. The device is also available in a DDPAK-7 package.

特性 Features

? VOUT Range: 0.8 V to 3.6 V
? Ultralow VIN Range: 0.8 V to 5.5 V
? VBIAS Range: 2.7 V to 5.5 V
? Low Dropout: 120 mV (Typical) at 3 A
? Power-Good (PG) Output Allows Supply Monitoring or Provides a Sequencing Signal for Other Supplies
? 2% Accuracy Over Line, Load, and Temperature
? Adjustable Start-Up In-Rush Control
? VBIAS Permits Low VIN Operation With Good Transient Response
? Stable with Any Output Capacitor ≥ 2.2 μF
? Packages:
? Small, 3-mm × 3-mm × 1-mm VSON
? 5-mm × 5-mm × 1-mm VQFN and DDPAK-7

? Active High Enable