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ACE50238BM+ Datasheet(PDF) 5 Page - ACE Technology Co., LTD.

Part # ACE50238BM+
Description  400mA CMOS Low Dropout Voltage Low consumption Regulator
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Manufacturer  ACE [ACE Technology Co., LTD.]
Direct Link  http://www.ace-ele.com
Logo ACE - ACE Technology Co., LTD.

ACE50238BM+ Datasheet(HTML) 5 Page - ACE Technology Co., LTD.

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ACE502
                        Technology
400mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
5
ACE502-3.3V
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage
VIN
8
V
Output Voltage
VOUT
VIN=VOUT+1.0V,IOUT=40mA
3.234
3.3
3.366
V
Maximum Output Current
IOUT(Max.)
VIN=VOUT+1.0V,VOUT>3.3*0.95
400
mA
IOUT=100Ma
200
400
Input-Output Voltage
Differential
Dropout
Voltage
IOUT=200mA
400
600
mV
Line Regulation
ΔVOUT /
ΔVIN•VOUT
IOUT=40mA
3.5≦VIN≦8A
0.2
0.3
%/V
Load Regulation
ΔVOUT
VIN=4.3V
1mA≦IOUT≦100mA
20
40
mA
Quiescent Current
Iq
VIN=VOUT+1V
7
10
uA
Output Noise
Noise
f=10Hz to 100kHz,
COUT=1μF
40
uVrms
Ripple Rejection
PSRR
f=100Hz,IOUT=40mA,
COUT=1μF
60
dB
Output Voltage
Temperature Coefficient
ΔVOUT /
ΔT•VOUT
50
ppm/℃
Typical Application Circuit
ACE502
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:
ACE502 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 400mA.
ACE502 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 ACE502 ’s temperature
coefficient within 50ppm/℃.


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