Soft-Start (SS) Pin Provides a Linear Startup
with Ramp Time Set by External Capacitor The TPS74401 low-dropout (LDO) linear regulator
· 1% Accuracy Over Line, Load, and provides an easy-to-use robust power management
Temperature solution for a wide variety of applications.
User-programmable soft-start minimizes stress on
· Supports Input Voltages as Low as 0.9V with the input power source by reducing capacitive inrush
External Bias Supply current on start-up. The soft-start is monotonic and
· Adjustable Output (0.8V to 3.6V) well-suited for powering many different types of
· Ultra-Low Dropout: 115mV at 3.0A (typ) processors and ASICs. The enable input and
power-good output allow easy sequencing with
· Stable with Any or No Output Capacitor external regulators. This complete flexibility permits
· Excellent Transient Response the user to configure a solution that will meet the
· Available in 5mm ´ 5mm ´ 1mm QFN and sequencing requirements of FPGAs, DSPs, and
DDPAK-7 Packages other applications with specific start-up requirements.
· Open-Drain Power-Good (QFN only) A precision reference and error amplifier deliver 1%
accuracy over load, line, temperature, and process. · Active High Enable

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