Technology
ACE502-3.3V
Parameter
Input Voltage
Output Voltage
Maximum Output Current
Input-Output Voltage
Differential
Line Regulation
Load Regulation
Quiescent Current
Output Noise
Ripple Rejection
Output Voltage
Temperature Coefficient
ACE502
400mA
CMOS Low Dropout Voltage Low consumption Regulator
Symbol
V
IN
V
OUT
I
OUT
(Max.)
Dropout
Voltage
ΔV
OUT
/
ΔV
IN
•V
OUT
ΔV
OUT
Iq
Noise
PSRR
ΔV
OUT
/
ΔT•V
OUT
Conditions
Min
Typ
3.3
200
400
0.2
20
7
40
60
50
V
IN
=V
OUT
+1.0V,I
OUT
=40mA
3.234
V
IN
=V
OUT
+1.0V,V
OUT
>3.3*0.95 400
I
OUT
=100Ma
I
OUT
=200mA
I
OUT
=40mA
3.5≦V
IN
≦8A
V
IN
=4.3V
1mA≦I
OUT
≦100mA
V
IN
=V
OUT
+1V
f=10Hz to 100kHz,
C
OUT
=1μF
f=100Hz,I
OUT
=40mA,
C
OUT
=1μF
Max
8
3.366
400
600
0.3
40
10
Units
V
V
mA
mV
%/V
mA
uA
uVrms
dB
ppm/℃
Typical Application Circuit
ACE502
Vin
+
Cin
1uF
Vin
GND
+
1uF
Cout
Vout
Vout
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/℃.
VER 1.2
5
ACE [ ACE TECHNOLOGY CO., LTD. ]
