ACE504A

Wide Input Voltage Range, 150mA ULDO Regulator

VER 1.2

1 

Description

ACE504A series are positive voltage regulator IC fabricated by high voltage EPNP process.

The ACE504A has features of wide input voltage range and high accuracy, high ripple rejection, low

dropout voltage, low noise, current limit and ultra-low quiescent current which make them ideal for use in

various USB and portable device.

The IC consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a

current limit circuit for current protection, and a chip enable circuit.

ACE504A has adjustable, 1.8V,3.3V,5.0V fixed voltage versions.

The ACE504A is available in space saving SOT-23-5 an SOT-89-3 packages.

Features

Application

Absolute Maximum Ratings

Parameter

Symbol

Max

Unit

Supply Input voltage

38

V

Enable Input Voltage

38

V

Output Current

250

mA

Lead Temperature (Soldering, 10sec)

260

℃

Operating Junction Temperature

150

℃

ESD (Machine Mode)

275

V

ESD (Human Body Mode)

2000

V

Storage Temperature Range

-60 to 150

℃

SOT-23-5

250

Thermal Resistance (No Heatsink)

SOT-89-3

165

℃

/W

Note 1: Stressed greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated

under “ Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may

affect device reliability.