ACE555
400mA LDO Dropout Voltage Regulator
Technology
Description
ACE555 is a series of low dropout three terminal regulators with a dropout of 1.22V at 400mA load
current.
Other than a fixed version（Vout＝1.8V,2.5V,2.85V,3.3V,5V）, ACE555 has an adjustable version, which
can provide an output voltage from 1.25 to 13.8V with only two external resistors.
ACE555 offers thermal shut down and current limit functions, to assure the stability of chip and power
system. And it uses trimming technique to guarantee output voltage accuracy within ±2％.
ACE555 is available in SOT-89-3 power Package. Lead free package is also available on command.
Features
• Other than a fixed version and an adjustable version, output value can be customized on command.
• Maximum output current is 400mA
• Output voltage accuracy is within ±1％
• Range of operation input voltage: Max 18V
• Line regulation: 0.2％
• Load regulation: 0.4％
• Environment Temperature: -50℃~140℃
Application
• Power Management for Computer Mother Board, Graphic Card
• LCD Monitor and LCD TV
• DVD Decode Board
Absolute Maximum Ratings
Parameter
Symbol
Max
Unit
Input voltage
VIN
18
V
Power Dissipation
SOT-89-3
0.5
W
Junction temperature
Environment Temperature
Storage temperature
TJ
TA
TS
150
140
OC
OC
OC
65 to 150
VER 1.2
1
ACE [ ACE TECHNOLOGY CO., LTD. ]
