AQ102
Low-Voltage Ref/Amplifier
SOT23-5 and SC70-5 Package
Product Specification
Revision 1.3
May 3, 2005
General Description
The AQ102 is a low voltage combined
reference/amplifier suited for the control loop
of low voltage power supplies. In order to
allow operation down to very low voltages,
the error amplifier output and the supply
terminal have been isolated to separate
functional pins. The nominal reference
voltage is 600 mV, the COMP output can
sink 20mA at 300mV.
Functionally, the AQ120 can be applied
similarly to industry standard TL431, except
that the reference is 600 mV and this requires a
separate Vcc connection to a supply above
2.2V. Additionally, the output of the AQ120 can
swing close to ground.
In the SC-70 package, the AQ102 is a
replacement for the MAX8515 part.
Applications
•
Power supply control loop
•
Power supply supervisory functions
Features
•
Low input voltage reference
•
600mV high accuracy voltage reference
•
Low TC voltage reference
•
High PSRR and line regulation
•
Low current consumption
•
Offered in ultra small SC70-5 package
•
Zero offset error amplifier
•
Open collector output
•
RoHS compliant
Block Diagram
Pin Configuration
www.acutechnology.com
AQ102
Acutechnology Semiconductor Inc.
AQ102
Typical Application
Pin Descriptions
Pin
1
2
3
4
5
Pin Name
FB
GND
COMP
N/C
VCC
Function
Inverting input to error amplifier; will have
threshold of 600mV.
Ground
Output of error amplifier; 20 mA source/sink
capability
-
Positive supply
Ordering Information
Device
AQ102
AQ102
Note:
The
Operating Tj
-40C˚
≤
105C˚
-40C˚
≤
105C˚
%Tol
1.0
1.0
Pkg Type
SOT-23-5
SC70-5
V
OUT
0.6V
0.6V
Wrap
T&R
T&R
Ordering Number
AQ102BY-M5-06-TRL
AQ102BY-C5-06-TRL
TRL parts are Lead Free and RoHS compliant.
2
Rev. 1.3
May 3, 2005
www.acutechnology.com
Acutechnology Semiconductor Inc.
AQ102
Absolute Maximum Ratings
Parameter
V
CC
Voltage
COMP Voltage
REF Voltage
VCC, COMP, REF Current
Operating Junction Temperature
Lead Temperature (soldering 10 seconds)
Storage Temperature Range
Value
20
20
20
50
150
260
-65 to +150
Units
V
V
V
mA
ºC
ºC
ºC
Electrical Specifications
Electrical characteristics are guaranteed over the full temperature range –40ºC <Tj<105ºC. Ambient
temperature must be de-rated based upon power dissipation and package thermal characteristics. Unless
otherwise stated, test conditions are VCC = 3V, VCOMP = VFB, ICOMP = 1mA
Symbol
Vccmin
Icc
Vcc
Vref
DVcc
DViload
Tcref
IFB
PSRR
Av
BW
VCOMP
TRANSC
Ileak
Parameter
Minimum Input Voltage
Quiescent Supply Current
Supply Voltage
Reference Voltage
Line regulation
Load Regulation
Reference Temperature Deviation
REF input current
Reference Power Supply Rejection
Error Amplifier Open Loop Gain
Unity Gain Frequency
Output Saturation Voltage
Output Transconductance
Output Leakage Current
Freq.=300KHz
ICOMP=2mA, COMP=1V
ICOMP=2mA, COMP=1V
ICOMP=20mA, VFB=
700mV
ICOMP=1mA to 20mA
VCOMP=16 VFB=0
Tj=25ºC
-40ºC <Tj<105ºC
2.2V < VCC < 18V
ICOMP=1mA to 10mA
-40ºC <Tj<105ºC
-500
35
60
1
45
80
2
100
2.5
200
400
250
VCOMP=1V
2.2
594
592
0.5
4
25
600
0.3
Conditions
Min
Typ
Max
2.2
0.5
18
606
608
1
8
50
500
Units
V
mA
V
mV
mV
mV
ppm/ºC
nA
dB
dB
MHz
mV
mA/mV
nA
www.acutechnology.com
3
Rev. 1.3
May 3, 2005
Acutechnology Semiconductor Inc.
AQ102
Typical Performance Characteristics
Line regulation (at 1mA)
0.4
Output voltage change (mV)
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
2.2
6
10
14
18
Supply voltage (V)
Output voltage change (mV)
6
5
4
3
2
1
0
1
Load regulation
5
10
Load current (mA)
15
20
Supply current vs load current
300
280
Supply current (uA)
260
240
PSRR (dB)
Power-supply rejection ratio vs frequency
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
-100
0.1
1
10
100
1000
10000 100000
220
200
180
160
140
120
100
0
5
10
15
20
Load current (m A)
Frequency (Hz)
www.acutechnology.com
4
Rev. 1.3
May 3, 2005
Acutechnology Semiconductor Inc.
AQ102
Typical Performance Characteristics (contd.)
FB Bias current vs Tem perature
Vcc=2.5V
630
Vref@10mA
0
Reference voltage (V)
620
610
600
590
580
570
-40
0
40
80
120
Temperature (degrees C)
-10
FB bias current (nA)
-20
-30
-40
-50
-60
-70
-40
0
40
80
120
Tem perature (degrees C)
Gain vs. Frequency
110
90
70
Gain (dB)
50
30
10
-10
0.01
0.1
1
10
100
1000 10000
Frequency (KHz)
www.acutechnology.com
5
Rev. 1.3
May 3, 2005
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
