AQT104 [ETC]
2.5V or Adjustable, No Output Cap, Low Dropout Regulator; 2.5V或可调，无输出电容，低压差稳压器
| 型号： | AQT104 |
| 厂家： | 
ETC |
| 描述： | 2.5V or Adjustable, No Output Cap, Low Dropout Regulator |
| 文件： | 总4页 (文件大小：296K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AQT104
Quik LDO
2.5V or Adjustable, No Output Cap, Low Dropout Regulator
Preliminary Design Specification
Revision 0.5, May 2, 2003
General Description
Applications
• Cordless and cellular phones
• Medical equipment
The Quik LDO™ AQT104 is a low
dropout regulator that requires no
external output capacitor for stability and
it is stable with any capacitive load. It
offers 0.5 Ohms pass device with 500mA
load current. Its output voltage is preset
to values between 2V and 3.3V with 1%
accuracy and presents very good line
and load regulation. It also includes
output current limit with foldback
•
PDAs and battery-powered equipments
Features
• No need for output capacitor
• 500mA output current
• 150mV drop at 300mA
• Preset output voltages (1% accuracy)
• Low current consumption
• Foldback output current limitation
• Thermal Shutdown
characteristic and thermal shutdown. The
removal of the output capacitor allows
cost and board space reduction along
with energy saving at power on and off.
It is best suited for battery-powered
equipments and in particular for cellular
phones.
• Excellent load and line regulation
• Low noise
• Fast turn on and off
• SOT23 package
Block Diagram
Pin Configuration
Quik LDO™ technology is patent pending.
Quik LDO™ is a trademark of Acutechnology Semiconductor Inc.
Quik LDO™ is not a typo – with a Quik LDO™ you eliminate a “C”.
Acutechnology Semiconductor Inc.
www.acutechnology.com
Acutechnology Semiconductor Inc.
AQT104 Quik LDO™
Pin Description
Pin
Pin Name
Function
1
2
3
4
5
VIN
Regulator Input.
GND
Ground
ENABLE
ADJ/CBY
VOUT
Enable
Output voltage adjust
Regulator output
Absolute Maximum Ratings
VIN Voltage................................................7V
VIN Current...............................................1A
Operating Junction Temperature ...............150ºC
Lead Temperature (soldering 10 seconds).260ºC
Storage Temperature Range ......................-65ºC to +150ºC
Electrical Specifications
Electrical characteristics are guaranteed by design over the full temperature range –40ºC <Tj<135ºC. Ambient
temperature must be de-rated based upon power dissipation and package thermal characteristics.
Unless otherwise stated, test conditions are Vin=Vout+0.5V, Iout=1mA, Tj=+25ºC.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Input Voltage
2
6
V
VIN
Ground Current
Current Limit
0.1
0.2
mA
mA
Icc
550
700
850
1.5
ILIM
Ta=25ºC
Output Voltage Accuracy
1
%
Vout
2.5
3
Over Temperature
VIN=(Vout+0.1V) to 6V
Iout=20mA
Line regulation
1.5
5
mV
mV
DVcc
Load Regulation
Iout=1 mA to 500mA
10
DViload
Thermal Shut-down Temperature
Thermal Shut down Hysteresis
160
20
Tshut
DO
ºC
mV
dB
Dropout Voltage
Iout=300mA
Freq.=120Hz
150
60
180
Reference Power Supply Rejection
PSRR
f=10Hz to 100KHz (no caps)
Vout=2.5V
Output Voltage Noise
150
uVrms
En
EN Input Low Voltage
EN Input High Voltage
Shutdown Current
0.8
V
V
Venl
Venh
Isd
Vin=5V
EN=0V
2
10
300
nA
Acutechnology Semiconductor Inc.
Preliminary Design Specification
www.acutechnology.com
Page 2 of 4
AQT104 Rev 05, May 2, 2003
Acutechnology Semiconductor Inc.
AQT104 Quik LDO™
Typical Response
2.62
2.58
2.54
2.5
2.46
2.42
450
350
250
150
50
0
100
200
300
400
500
600
Time/µSecs
Load transient (current step=500mA). No output capacitor!!
100µSecs/div
4.5
3.5
2.5
1.5
0.5
2.5
2
1.5
1
0.5
0
0
100
200
300
400
500
600
Time/µSecs
100µSecs/div
Turn on and off transient response.
Acutechnology Semiconductor Inc.
Preliminary Design Specification
www.acutechnology.com
Page 3 of 4
AQT104 Rev 05, May 2, 2003
Acutechnology Semiconductor Inc.
AQT104 Quik LDO™
Package Mechanical Details
SOT23-5
DIM
Millimetres
MIN MAX
Inches
MIN
0.035
0.00
MAX
0.057
0.006
0.051
0.020
0.008
0.118
0.118
0.069
A
0.90
0.00
0.90
0.35
0.09
2.80
2.60
1.50
1.45
0.15
1.3
A1
A2
b
0.035
0.014
0.0035
0.110
0.102
0.059
0.50
0.20
3.00
3.00
1.75
C
D
E
E1
e
0.95 REF
1.90 REF
0.037 REF
0.075 REF
e1
L
0.10
0
0.60
10
0.004
0
0.024
10
a°
Contact information
Acutechnology Semiconductor Inc.
3487 McKee Rd. Suite 52
San Jose CA 95127
USA
TEL:(408) 259-2300
(408) 259-3400
FAX:(408) 259-9160
e-mail:info@acutechnology.com
Acutechnology Semiconductor Inc.
Preliminary Design Specification
www.acutechnology.com
Page 4 of 4
AQT104 Rev 05, May 2, 2003
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