ACE527H

Low Noise, High PSRR LDORegulator

VER 1.3

1

Description

The ACE527H is a high performance LDO regulator specifically designed to deliver fixed/adjustable

output voltage with high PSRR and fast transient response. Internal 700mohm PMOS pass transistor

yields typical 420mV dropout voltage at 600mA output current.

Typical quiescent current is only 65uA. A logic low on the enable input, CE, shuts down the output and

reduces the supply current to less than 1uA. The ACE527H works stably with as low as 1uF ceramic output

capacitor, minimizing board space requirement.

Other features include adjustable soft start, high output accuracy, output current limiting, and thermal

protection. The ACE527H is available in the TSOT23-5, TSOT23-6, or WDFN1.6x1.6 packages.

Features



Wide Input Voltage Range, 2.2V to 6.0V



Fixed or Adjustable Output Voltage



High Output Voltage Accuracy, +/-1%



Fast Transient Response



Typical 420mV Dropout Voltage at 600mA Output Current



Small Output Capacitor, 1uF



Typical 65uA Quiescent Current



Less Than 1uA Shutdown Current



Dedicated Chip Enable Pin



Fixed or Adjustable Soft Start



Over Current Limitation



Thermal Protection



TSOT23-5, TSOT23-6, WDFN1.6x1.6 Packages



RoHS Compliant and Halogen Free

Application



Battery-Powered

Equipment’s



Hand-Held Electrical Appliances



Portable Communication Equ

ipment’s

Absolute Maximum Ratings

(Note 1)

Parameter

Value

Input Supply Voltage (V

-0.3V to 6.5V

Voltage at EN

-0.3V to 6.5V

Others

-0.3V to (V

ESD

(Note 2)

Human Body Mode

2kV

Machine Mode

200V

Note 1: Stresses beyond 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 condition beyond those indicated in the operational

sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability and lifetime.

2:

This device is sensitive to electrostatic discharge. Follow proper handling procedures.