ACE505
Technology
Description
Low noise 150mA LDO regulator
ACE505 series is a group of positive voltage output, low power consumption, low dropout voltage
regulator.
ACE505 can provide output value in the range of 1.2V~5.0V every 0.1V step. It also can be customized
on command.
ACE505 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver
module.
ACE505 has excellent load and line transient response and good temperature characteristics, which can
assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage
accuracy within±2%.
ACE505 is available in SOT-23-5, SC-70-5 packages which is lead free. It also can available in these
packages with lead.
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Features
Low Power Consumption: 25uA（Typ.）
Low output noise (27uVRMS)
Standby Mode: 0.1uA
Low dropout Voltage: 0.2V@100mA (Typ.)
High Ripple Rejection: 65dB@1kHz (Typ.)
Low Temperature Coefficient: ±100ppm/°C
Excellent Line regulation: 0.05%/V
Build-in chip enable circuit
Output Voltage Range: 1.2V~5.0V (customized on command every 0.1V step)
Highly Accurate: ±2% (±1% customized)
Output Current Limit
Application
Power source for cellular phones and various kind of PCSs
Battery Powered equipment
Power Management of MP3, PDA, DSC, Mouse, PS2 Games
Reference Voltage Source
Regulation after Switching Power
Typical Performance Characteristic:
ACE505-1.8V Output
Output Current Iout(mA)
VER 1.2
1
ACE505
Technology
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Power Dissipation
SOT-23-5
SC-70-5
Junction temperature
Storage temperature
Symbol
Max
10
200
200
T
J
T
S
125
- 45 to 150
Low noise 150mA LDO regulator
Unit
V
mA
mW
O
O
C
C
Packaging Type
SC-70-5 / SOT-23-5
5
4
1
2
3
Pin
V
OUT
V
DD
GND
CE
NC
SC-70-5
5
1
2
3
4
SOT-23-5(A)
5
1
2
3
4
SOT-23-5(B)
1
3
2
4
5
Function
Output pin
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Ordering information
Selection Guide
ACE505 XX XX + H
Halogen - free
Pb - free
QM: SC-70-5
BNA: SOT-23-5
BNB: SOT-23-5
Output Voltage：
1.2V/1.5V…..5.0V
VER 1.2 2
ACE505
Technology
Block Diagram
Low noise 150mA LDO regulator
Recommended Work Conditions
Item
Input Voltage Range
Ambient Temperature
Min Recommended Max Unit
8
V
-40
85
℃
Electrical Characteristics
(Test Conditions: Cin=1uF, Cout=1uF,T
A
=25℃, unless otherwise specified.)
ACE505, for arbitrary output voltage
Symbol
Vin
Vout
Iout (Max.)
Dropout Voltage
△Vout/△Vin·Vout
△Vout/△Iout
Iss
Istandby
△Vout/△T·Vout
PSRR
Parameter
Input Voltage
Output Voltage
Maximun Output
Current
Input-Output Voltage
Differentia
Line Regulation
Load Regulation
Supply Current
Supply Current
(Srandby)
Output Voltage
Temperature
Coefficiency
Ripple Rejection
Conditions
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vin-Vout=1V
Min
1.8
Vout
x0.98
150
Typ
Max
8
Vout
X1.02
Units
V
V
mA
Refer to the ELECTRICAL CHARACTERISTICS by
OUTPUT VOLTAGE
Iout=40mA
1.6V≤Vin≤8V
Vin=Set Vout+1V
1mA≤Iout≤80mA
Vin=Set Vout+1V
Vin=Set Vout+1V
Vce=Gnd
Iout=30mA
F=1kHz,
0.05
12
25
0.1
±100
65
0.2
40
50
1.0
%/V
mV
uA
uA
ppm/°C
dB
VER 1.2 3
ACE505
Technology
Low noise 150mA LDO regulator
Ripple=0.5Vp-p
Vin=Set Vout+1V
Vout=0V
2.0
1.5
0
BW=10Hz~100kHz
27
Ilim
Rpd
Vceh
Vcel
en
Short Current Limit
CE Pull down
Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
20
5.0
10.0
Vin
0.25
mA
MΩ
V
V
uVrms
Electrical Characteristics by Output Voltage
Output Voltage
Vout (V)
Vout =1.5V
Vout = 1.6V
Vout = 1.7V
1.8
≤
Vout
≤
2.0
2.1
≤
Vout
≤
2.7
2.8
≤
Vout
≤
4.0
Dropout Voltage, V
DIF
(V)
Condition
Typ.
Max.
0.38
0.70
0.36
0.34
0.32
0.28
0.22
0.65
0.60
0.55
0.50
0.35
Iout = 120mA
Typical Application Circuit
In
V
DD
+
Cap
CE
ACE505
V
OUT
GND
+
Cap
Out
Application hints:
Note1: Input capacitor (Cin=1uF) is recommended in all application circuit.
Note2: Output capacitor (Cout=1uF/2.2uF) is recommended in all application to assure the stability of
circuit.
Explanation：
ACE505 series is a group of positive voltage output, low noise, low power consumption, low dropout
voltage regulator.
ACE505 can provide output value in the range of 1.2V~5.0V every 0.1V step. It also can be customized
on command.
ACE505 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver
module.
VER 1.2 4
ACE505
Technology
Low noise 150mA LDO regulator
ACE505 has excellent load and line transient response and good temperature characteristics, which can
assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage
accuracy within±2%.
Typical Performance Characteristics
1.Output Voltage vs. Output Current
(with output short protection)
ACE505-1.8V
2.Output Voltage vs. Input Voltage
ACE505-1.8V
Output Current Iout (mA)
Input Voltage Vin(V)
3.Droput Voltage vs. Output Current
4.Supply Current vs. Input Voltage
Output Current Iout (mA)
Input Voltage Vin(V)
VER 1.2 5
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