ZHCSSO4D September 2010 – December 2023 TPS74801-Q1
PRODUCTION DATA
The TPS748 is a low-dropout regulator that features soft-start capability. This regulator uses a low current bias input to power all internal control circuitry, allowing the NMOS-pass transistor to regulate very low input and output voltages. Using an NMOS-pass transistor offers several critical advantages for many applications. Unlike a PMOS topology device, the output capacitor has little effect on loop stability. This architecture allows the TPS74801-Q1 to be stable with any capacitor type of value 2.2 μF or greater. Transient response is also superior to PMOS topologies, particularly for low VIN applications. The TPS74801-Q1 features a programmable voltage-controlled soft-start circuit that provides a smooth, monotonic start-up and limits start-up inrush currents that can be caused by large capacitive loads. A power-good (PG) output is available to allow supply monitoring and sequencing of other supplies. An enable (EN) pin with hysteresis and deglitch allows slow-ramping signals to be used for sequencing the device. The low VIN and VOUT capability allows for inexpensive, easy-to-design, and efficient linear regulation between the multiple supply voltages often required by processor-intensive systems.