Products

The MST9193 family of low-dropout(LDO), low-power Linear regulators offers very high power supply rejection ratio (PSRR) while maintaining very low 50uA ground current,suitable for RF applications.

Application sample Datasheet

Description

The MST9193 family of low-dropout(LDO), low-power Linear regulators offers very high power supply rejection ratio  (PSRR)  while

maintaining very low 50uA ground current,suitable for RF applications.The family uses an advanced CMOS process and a PMOSFET

pass device to achieve fast start-up,very low noise,excellent transient response,and excellent PSRR performance.

The MST9193 is stable with a 1.0uF ceramic output capacitor,  and uses a precision voltage reference and feedback loop to  achieve

a worst-case of 2% over all load, line, process, and temperature variations.

It is fully specified from TJ = -40°C to +150°C and is offered in a small  DFN4 package, which is ideal  for small from factor  portable

equipment suchwireless handsets and PDAs.

Features

■ Wide input voltage range: 2.0V to 6.0V

■ Up to 500mA load current

■ Output voltage options available on request

■ Very low IQ: 50uA   

■ Very High PSRR: 82dB at 1kHz

■ Ultra low noise: 45uVRMS at 1.2V output

■ Ultra-Fast start-up time: 25us

■ Excellent load/line transient response

■ Line regulation: 0.03% typical

■ Standard fixed output voltage options: 1.2V, 1.5V, 1.6V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V,etc

■ Ultra low dropout: 250mV at 300mA load@VOUT=2.8V

Typical Application