ACE ACE520QDGM+H Dual 300ma high psrr linear regulator Datasheet

ACE520
Dual 300mA High PSRR Linear Regulator
Description
ACE520 dual, low-noise, low-dropout regulator delivers at least 300mA of continuous output current.
The output voltage for each regulator is set independently by trimming. Output voltages are selectable in
100mV steps within a range of 1.2V to 3.5V. Typical output noise is 47uVrms,and PSRR is 73dB at 100Hz.
The ACE520 includes two independent logic-controlled shutdown inputs and allows the output of each
regulator to be turned of independently.
The ACE520 includes high accuracy voltage reference, error amplifier, current limit circuit and output
driver module.
The ACE520 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%.
Features
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Two low dropout voltage regulators
300mA output current for each LDO
25uA operating supply current per LDO
Low 47uVRMS output noise
Standby Mode: 0.1uA
Low 160mV dropout at 300mA load
73dB PSRR at 100Hz
Excellent Line regulation: 0.05%/V
Independent Shutdown controls
1.2V to 3.5V Factory-Preset Output
Output Current Limit
Highly Accurate: ±2% (±1% customized)
Application
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Cellular phones
Cordless phones and radio communication equipment
Battery Powered equipment
Notebook and hand-ole equipment
Wireless LAN
GPS receivers
Absolute Maximum Ratings
Parameter
Symbol
Max
Unit
Input voltage
Power Dissipation
SOT-23-6
Junction temperature
VIN
8
V
mW
TJ
250
125
Storage temperature
Ambient Temperature
TS
TA
O
C
- 45 to 150
O
C
-40 to 85
O
C
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
VER 1.4
1
ACE520
Dual 300mA High PSRR Linear Regulator
Packaging Type
SOT-23-6
SOT-23-6(D) SOT-23-6(E) Description
6
1
5
2
4
3
Function
6
6
Vout1
Output 1 pin
2
5
Vdd
Input pin
4
1
Vout2
Output 2 pin
3
3
CE2
Chip Enable pin2
5
2
GND
Ground pin
1
4
CE1
Chip Enable pin1
Ordering information
ACE520 X XXX + H
Halogen - free
Pb - free
DGM : SOT-23-6(D)
EGM : SOT-23-6(E)
Output Voltage:
B:1.5V(Output1),2.8V(Output2)
R:3.0V(Output1),3.0V(Output2)
C:1.5V(Output1),3.0V(Output2)
S:3.0V(Output1),3.3V(Output2)
D:1.5V(Output1),3.3V(Output2)
T:3.3V(Output1),1.8V(Output2)
E:1.5V(Output1),4.0V(Output2)
U:3.3V(Output1),3.3V(Output2)
G:1.8V(Output1),2.5V(Output2)
Y: 2.8V(Output1),3.3V(Output2)
H:1.8V(Output1),2.8V(Output2)
Z:3.3V(Output1),3.3V(Output2)
I: 1.8V(Output1),3.0V(Output2)
a:1.2V(Output1),2.5V(Output2)
J:1.8V(Output1),3.3V(Output2)
b:2.8V(Output1),1.2V(Output2)
M:2.8V(Output1),1.8V(Output2)
c:2.8V(Output1),1.3V(Output2)
O:2.8V(Output1),2.8V(Output2)
d:2.5V(Output1),2.8V(Output2)
P:2.8V(Output1),3.0V(Output2)
e:2.5V(Output1),3.3V(Output2)
Q:3.0V(Output1),2.5V(Output2)
f:2.8V(Output1),3.3V(Output2)
g: 1.3V(Output1),2.8V(Output2)
VER 1.4
2
ACE520
Dual 300mA High PSRR Linear Regulator
Block Diagram
Explanation
ACE520 series are highly accurate, dual, low noise, CMOS low dropout voltage regulators. The output
voltage for each regulator is set independently by trimming. Voltages are selectable in 100mV steps within
a range of 1.2V to 3.5V. It also can be customized on command.
ACE520 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver
module.
ACE520 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%.
Recommended Work Conditions
Item
Min Max Unit
Input Voltage Range
6
V
85
℃
Ambient Temperature
-40
VER 1.4
3
ACE520
Dual 300mA High PSRR Linear Regulator
Electrical Characteristics
(Test Conditions: C1=1uF, Cout=3.3uF,TA=25℃, unless otherwise specified.)
ACE520, For arbitrary output voltage
Parameter
Symbol
Conditions
Min
Input Voltage
VIN
Output Voltage
VOUT
Vin=Set Vout+1V
1mA≦Iout≦30mA
Vout
x0.98
Maximum Output Current
IOUT(Max.)
Vin-Vout=1V
300
Dropout Voltage, Vout≧2.8V
Vdrop
Line Regulation
Load Regulation
ΔVOUT /
ΔVIN•VOUT
ΔVOUT /
ΔIOUT
Supply Current
Iss
Supply Current (Srandby)
Istandby
Output Voltage Temperature
Coefficiency
ΔVOUT /
ΔT•VOUT
Typ
Vout1
Max
Units
6
Vout
x1.02
V
V
mA
Iout=100mA
50
80
Iout=300mA
Iout=40mA
2.8V≦Vin≦6V
Vin=Set Vout+1V
1mA≦Iout≦300mA
160
220
0.05
0.2
%/V
30
50
mA
50
100
uA
0.1
1.0
uA
Vin=Set Vout+1V
Vin=Set Vout+1V
Vce=Gnd
Iout=30mA
F=100Hz
Ripple=0.5Vp-p
Vin=Set Vout+1V
Vout=0V
mV
±100
ppm/℃
70
dB
500
mA
Ripple Rejection
PSRR
Short Current Limit
Llim
CE Input Voltage “H”
Vceh
1.5
Vin
V
CE Input Voltage “L”
Vcel
0
0.25
V
Output Noise
en
BW=10Hz~100kHz
47
uVrms
Typical Application Circuit
Note: Input capacitor(Cin=1uF) and Output capacitor(Cout=1uF/3.3uF) are recommended in all application circuit.
VER 1.4
4
ACE520
Dual 300mA High PSRR Linear Regulator
Electrical Characteristics
PSRR
Freq (KHz)
Typical Performance Characteristics
Output Voltage vs. Output Current
(with output short protection)
Current limit vs. Vout
Iload (mA)
Output Voltage vs. Input Voltage
Line Regulation
Vin (V)
VER 1.4
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ACE520
Dual 300mA High PSRR Linear Regulator
Dropout Voltage vs. Output Current
Dropout & Iout
Iout(mA)
Ripple rejection vs. Frequency
PSRR
Freq (KHz)
Line transient response
Cin=Cout=1uF Iout=25mA Vout=3.3V
VER 1.4
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ACE520
Dual 300mA High PSRR Linear Regulator
Load transient response
Cin=Cout=1uF Vout=4.5V Vout=3.3V
Start up from EN
Shut down from EN
VER 1.4
7
ACE520
Dual 300mA High PSRR Linear Regulator
Packing Information
SOT-23-6
VER 1.4
8
ACE520
Dual 300mA High PSRR Linear Regulator
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.4
9
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