描述 Description

SiS5219A is optimised to deliver up to 1A peak output

current for start-up conditions where high inrush

current is demanded. Output voltage is set by x2

external resistors and enabled or shut down by CMOS

or TTL signalling. The device exhibits low dropout

voltage and ground current, when disabled current

consumption drops to near zero. The part is optimised

for ultra-low noise performance delivering 500nV/√Hz

typical and lower with an optional bypass capacitor.

Rugged with high stability, internal limiting + thermal

shutdown features for overload immunity, the part suits

use in high performance high reliability applications.

Features:

Wide VIN 2.4V - 16V

Output current capability: 1A

Low dropout voltage:

o < 330 mV (IOUT = 500mA)

o < 550 mV (IOUT = 1000mA)

0.003 Line, 0.2 Load regulation (Typ)

Low ground current: < 13mA (IOUT = 500mA)

Ultra-Low output noise: 300 nV/√Hz with CBYPASS

CMOS/TTL-Compatible Enable/Shutdown Control

Near-Zero Shutdown Current

Current + thermal limiting + rev. polarity protection

Low temperature coefficient.