ACE500EC

Low-Dropout CMOS Voltage Regulator

VER 1.2

1

Description

The ACE500EC series are a group of positive voltage regulators manufactured by CMOS technologies

with high ripple rejection, ultra-low noise, low power consumption and low dropout voltage, which can

prolong battery life in portable electronics. The ACE500EC series work with low-ESR ceramic capacitors,

reducing the amount of board space necessary for power applications. The ACE500EC series consume

less than 0.1μA in shutdown mode and have fast turn-on time less than 50μs.The series are very suitable

for the battery-

powered equipment’s, such as RF applications and other systems requiring a quiet voltage

source

Features



500mA RF Low-Dropout Regulator With Enable



Ultralow-Noise：

40μVRMS(10Hz~100kHz)



High PSRR: 70dB@1kHz



Fast Start-

Up Time (20μs)



Excellent Load/Line Transient Response



Low Dropout Voltage: 110mV@100mA



Stable With a 1μF Ceramic Capacitor



Available in Adjustable Voltage Version (0.6V to 5.5V)



Built-in Current Limiter, Short-Circuit Protection

Application



RF: VCOs, Receivers, ADCs



Cellular and Cordless Telephones



Handheld Organizers



Audio



Bluetooth, Wireless LAN



Tablet, MID

Parameter

Symbol

Max

Unit

Input Voltage

V

Output Current

750

mA

Output Voltage

V

Power Dissipation

SOT-23-5

Pd

400

mW

SOT-23-6

Operating Temperature

- 40~85

Storage Temperature

- 40~125

Soldering Temperature & Time

260