Positive Adjustable 0.5A Ultra-Low Dropout Voltage Regulator in bare die form

Description

Ultra-

The SiS3950 is a low-noise, ultra-low dropout linear

regulator operating from 2.5V to 6V input and with

500mA guaranteed output current. Typical output noise

is only 60μVRMS with dropout voltage 220mV at 500mA

load. The device utilizes a P-channel MOSFET pass

transistor which reduces power consumption to 250μA

at full load. Ruggedized features include internal output

current limiting; short-circuit protection and thermal

overload protection. The SiS3950 is simple to operate,

output voltage is set by two external resistors and a

logic enable pin controls shutdown mode operation.

The very small die size enables high integration.

Features:

 Adjustable output between 1V - 5V

 Ultra-low dropout: 220mV typ. at 500mA

 Low Noise (10Hz to 100kHz):

o 60μVRMS (VOUT = 1.0V)

o 194μVRMS (VOUT = 3.3V)

o 305μVRMS (VOUT = 5.0V).

 ± 2% voltage accuracy at 500mA

 Low power: 250μA, VIN = 4.2V, IOUT = 500mA

 Logic-controlled shutdown

 Fast transient response & Under Voltage Lockout

 Output current limited

 Short-Circuit and Thermal Overload protection.