ACE501

250mA CMOS Low Dropout Voltage Low consumption Regulator

VER 1.2

4

ACE501-3.0

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage

8

V

Output Voltage

2.94

3.0

3.06

V

Maximum Output Current

250

mA

170

300

Input-Output Voltage

Differential

Dropout

Voltage

320

500

mV

Line Regulation

0.2

0.3

%/V

Load Regulation

20

40

mV

Quiescent Current

Iq

1.5

uA

Output Voltage Temperature

Coefficient

50

ppm/℃

Typical Application Circuit

ACE501

Vin

Vin

Vout

Vout

GND

+

1uF

+

1uF

Cin

Cout

Application hints:

Note 1:Input capacitor (Cin=1uF) is recommended in all application circuit. Tantalum capacitor is recommended.

Note 2:Output capacitor (Cout=1uF) is recommended in all application to assure the stability of circuit. Tantalum

capacitor is recommended.

 

Explanation：

ACE501 is a series of low dropout voltage and low power consumption three pins regulator. Its

application circuit is very simple, which only needs two outside capacitors. It is composed of these

modules: high accuracy voltage reference, current limit circuit, error amplifier, output driver and power

transistor.

Current Limit module can keep chip and power system away from danger when load current is more

than 250mA.

ACE501 uses trimming technique to assure the accuracy of output value within±2%, at the same time,

temperature compensated is elaborately considered in this chip, which makes ACE501’s temperature

coefficient within 50ppm/℃.