ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Description
ACE501 series is a group of positive voltage output, low power consumption, low dropout voltage, three
terminal regulator. It can provide 250mA output current when input / output voltage differential drops to
400mV (Vin=4.0V. Vout=3.0V).The very low power consumption of ACE501 (lq=3.0uA) can greatly
improve natural life of batteries.
ACE501 can provide output value in the range of 1.2V~6.0V in 0.1V steps. It also can customized on
command.
ACE501 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver
module.
ACE501 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%.
Features
Low Power Consumption: 3.0uA (Typ)
Maximum Output Current: 250mA
Small Dropout Voltage 170mV@100mA (Vout=3.0V) / 400mV@250mA (Vout=3.0V)
Input Voltage Range: 1.5V~10V
Output Voltage Range: 1.2V~6.0V (customized on command in 0.1V steps)
High Accurate:
±2%
(±1% customized)e
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:
Output Voltage vs. Output Current (Vout=1.5V)
Output Current (mA)
VER 1.4
1
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Recommended Work Conditions
Item
Input Voltage Range
Ambient Temperature
-40
Min Max Unit
8
+85
V
℃
Electrical Characteristics
(Test Conditions: Cin=1uF, Cout=1uF,T
A
=25℃, unless otherwise specified.)
ACE501-1.5V
Parameter
Input Voltage
Output Voltage
Maximum Output Current
Input-Output Voltage
Differential
Line Regulation
Load Regulation
Quiescent Current
Output Voltage Temperature
Coefficient
ACE501-3.0
Parameter
Input Voltage
Output Voltage
Maximum Output Current
Input-Output Voltage
Differential
Line Regulation
Load Regulation
Quiescent Current
Output Voltage Temperature
Coefficient
Symbol
V
IN
V
OUT
I
OUT
(Max.)
Dropout
Voltage
ΔV
OUT
/
ΔV
IN
•V
OUT
ΔV
OUT
Iq
ΔV
OUT
/
ΔT•V
OUT
V
IN
=2.5V, V
OUT
>1.47
I
OUT
=100mA
I
OUT
=40mA
1.6V≦V
IN
≦8V
V
IN
=2.5V
1mA≦I
OUT
≦100mA
V
IN
=2.5V
I
OUT
=10mA
1.47
250
270
0.2
20
3.0
50
400
0.3
40
5.0
1.5
Conditions
Min
Typ Max
8
1.53
Units
V
V
mA
mV
%/V
mV
uA
ppm/℃
Symbol
V
IN
V
OUT
I
OUT
(Max.)
Dropout
Voltage
ΔV
OUT
/
ΔV
IN
•V
OUT
ΔV
OUT
Iq
ΔV
OUT
/
ΔT•V
OUT
Conditions
Min
2.94
Typ Max
8
3.0
170
320
0.2
20
3.0
50
3.06
300
500
0.3
40
5.0
Units
V
V
mA
mV
%/V
mV
uA
ppm/℃
V
IN
=4V, V
OUT
>2.94
I
OUT
=100mA
I
OUT
=200mA
I
OUT
=40mA
3.2V≦V
IN
≦8V
V
IN
=4.0V
1mA≦I
OUT
≦100mA
V
IN
=4V
I
OUT
=10mA
250
VER 1.4
3
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Typical Application Circuit
ACE501
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.
Typical Performance Characteristics
1. Load regulation
2. Line Regulation
VER 1.4
4
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
3. Dropout Voltage
4. Input Voltage transient response
(Vout=1.5V, Iout=10mA)
Input Voltage transient response
(Vout=1.5V, Iout=1mA)
Input Voltage transient response
(Vout=3.0V, Iout=10mA)
Input Voltage transient response
(Vout=3.0V, Iout=1mA)
VER 1.4
5
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