ACE502
Technology
Description
400mA CMOS Low Dropout Voltage Low consumption Regulator
ACE502 series is a group of positive voltage output, low power consumption, low dropout voltage, three
terminal regulator. It can provide 200mA output current when input / output voltage differential drops to
470mV（Vout=2.0V）
。The
very low power consumption of ACE502（Iq=7uA）can greatly improve natural
life of batteries.
ACE502 can provide output value in the range of 1.5V~6.0V in 0.1V steps. It also can customized on
command.
ACE502 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver
module.
ACE502 has well load transient response and good temperature characteristic, which can assure the
stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy
within
±2%.
ACE502 is available in SOT-89-3 SOT-23-3 SOT-23-5 packages which is lead free it also can available
、
、
，
in these packages with lead.
Features
•
•
•
•
•
•
•
•
•
•
•
Low Power Consumption: 7uA (Typ)
Maximum Output Current: 400mA
Small Dropout Voltage 250mV@100mA (Vout=2.0V) / 470mV@200mA (Vout=2.0V)
Input Voltage Range: 2.0V~10V
Output Voltage Range: 1.5V~6.0V (customized on command in 0.1V steps)
High Accurate:
±2%
(±1% customized)
Output Current Limit
Application
Battery Powered equipment
Power Management of MP3. PDA. DSC. Mouse. PS2 Games
Reference Voltage Source
Regulation after Switching Power
Typical Performance Characteristic:
A CE50218AM+ Dropout Voltage
Vin (V)
VER 1.2
1
Technology
Absolute Maximum Ratings
Parameter
Max Input voltage
Power Dissipation
SOT-23-3
SOT-23-5
SOT-89-3
Junction temperature
Storage temperature
Ambient Temperature
Symbol
V
IN
ACE502
400mA
CMOS Low Dropout Voltage Low consumption Regulator
Max
10
0.15
0.25
0.5
125
- 45 to 150
-40 ~85
Unit
V
W
O
O
T
J
T
S
T
A
C
C
O
C
Packaging Type
SOT-89-3
SOT-23-3
3
SOT-23-5
5
4
1
2
3
1
2
1
2
3
Pin SOT-89-3 SOT-23-3 SOT-23-5(A) SOT-23-5(B)
Function
V
IN
2
3
1
3
Supply Voltage Input
V
SS
1
1
2
2
Ground
CE
3
4
Enable Pin
NC
4
5
No connect
V
OUT
3
2
5
1
Output Voltage
Ordering information
Selection Guide
ACE502 XX XX + H
Halogen - free
Pb - free
AM : SOT-89-3
BM: SOT-23-3
BNA: SOT-23-5
BNB: SOT-23-5
Output Voltage：
1.5V/2.2V…..6.0V
VER 1.2
2
Technology
Block Diagram
ACE502
400mA
CMOS Low Dropout Voltage Low consumption Regulator
Recommended Work Conditions
Item
Input Voltage Range
Ambient Temperature
Min Recommended
-40
Max Unit
8
V
+125
℃
Electrical Characteristics
(Test Conditions: Cin=1uF, Cout=1uF,T
A
=25℃, unless otherwise specified.)
ACE502-1.8V
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
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
Typ Max
8
1.764 1.8 1.53
400
300
600
0.2
20
7
40
60
50
400
700
0.3
40
10
Min
Units
V
V
mA
mV
%/V
mA
uA
uVrms
dB
ppm/℃
V
IN
=V
OUT
+1.0V,V
OUT
>1.8
V*0.95
I
OUT
=100mA
I
OUT
=200mA
I
OUT
=40mA
2≦V
IN
≦8A
V
IN
=2.8V
1mA≦I
OUT
≦100mA
V
IN
=V
OUT
+1V
f=10Hz to 100kHz,
C
OUT
=1μF
f=100Hz,I
OUT
=40mA,
C
OUT
=1μF
I
OUT
=10mA
VER 1.2
3
Technology
ACE502-2.0V
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
ACE502-3.0V
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
V
IN
=V
OUT
+1.0V,I
OUT
=40mA
1.96
V
IN
=V
OUT
+1.0V,V
OUT
>2.0*0.95 400
I
OUT
=100mA
I
OUT
=200mA
I
OUT
=40mA
2.2≦V
IN
≦8A
V
IN
=3.0V
1mA≦I
OUT
≦100mA
V
IN
=V
OUT
+1V
f=10Hz to 100kHz,
C
OUT
=1μF
f=100Hz,I
OUT
=40mA,
C
OUT
=1μF
Typ Max
8
2.0 2.04
250
470
0.2
20
7
40
60
50
400
600
0.3
40
10
Units
V
V
mA
mV
%/V
mA
uA
uVrms
dB
ppm/℃
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
V
IN
=V
OUT
+1.0V,I
OUT
=40mA
2.94
V
IN
=V
OUT
+1.0V,V
OUT
>3.0*0.95 400
I
OUT
=100Ma
I
OUT
=200mA
I
OUT
=40mA
3.2≦V
IN
≦8A
V
IN
=4.0V
1mA≦I
OUT
≦100mA
V
IN
=V
OUT
+1V
f=10Hz to 100kHz,
C
OUT
=1μF
f=100Hz,I
OUT
=40mA,
C
OUT
=1μF
Typ Max
8
3.0 3.06
200
400
0.2
20
7
40
60
50
400
600
0.3
40
10
Units
V
V
mA
mV
%/V
mA
uA
uVrms
dB
ppm/℃
VER 1.2
4
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
ADI Reference Circuit
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