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ADP1714AUJZ-12-R7

更新时间： 2024-11-29 12:35:31
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亚德诺 - ADI 稳压器
页数 文件大小 规格书
16页 491K
描述
300 mA, Low Dropout CMOS Linear Regulator

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ADP1714AUJZ-12-R7 数据手册

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300 mA, Low Dropout  
CMOS Linear Regulator  
ADP1712/ADP1713/ADP1714  
TYPICAL APPLICATION CIRCUITS  
FEATURES  
Maximum output current: 300 mA  
Input voltage range: 2.5 V to 5.5 V  
Light load efficient  
ADP1712  
V
= 5V  
V
= 3.3V  
2.2µF  
IN  
OUT  
5
1
2
3
IN  
OUT  
2.2µF  
GND  
EN  
I
GND = 75 μA with 100 μA load  
10nF  
Low shutdown current: <1 μA  
4
SS  
Very low dropout voltage: 170 mV @ 300 mA load  
Initial accuracy: 1ꢀ  
Figure 1. ADP1712 with Fixed Output Voltage and Soft-Start Capacitor, 3.3 V  
Accuracy over line, load, and temperature: 2ꢀ  
16 fixed output voltage options with soft start:  
0.75 V to 3.3 V (ADP1712)  
Adjustable output voltage option: 0.8 V to 5.0 V  
(ADP1712 Adjustable)  
ADP1712  
ADJUSTABLE  
V
5
= 0.8V(1 + R1/R2)  
OUT  
V
= 5.5V  
IN  
1
2
3
IN  
OUT  
ADJ  
2.2µF  
2.2µF  
GND  
EN  
R1  
R2  
4
16 fixed output voltage options with reference bypass:  
0.75 V to 3.3 V (ADP1713)  
16 fixed output voltage options with tracking:  
0.75 V to 3.3 V (ADP1714)  
Low output noise: 40 μV rms  
Figure 2. ADP1712 with Adjustable Output Voltage, 0.8 V to 5.0 V  
ADP1713  
V
= 0.75V  
2.2µF  
V
= 3V  
OUT  
IN  
High PSRR: 72 dB @ 1 kHz  
1
2
3
5
IN  
OUT  
2.2µF  
Stable with small 2.2 μF ceramic output capacitor  
Excellent load/line transient response  
Current limit and thermal overload protection  
Logic controlled enable  
GND  
EN  
10nF  
4
BYP  
Figure 3. ADP1713 with Fixed Output Voltage and Bypass Capacitor, 0.75 V  
5-lead TSOT package  
ADP1714  
APPLICATIONS  
V
= 3V  
V
V
(V)  
OUT  
IN  
OUT  
1
2
3
5
4
IN  
OUT  
TRK  
Mobile phones  
3
2
1
2.2µF  
2.2µF  
GND  
EN  
Digital camera and audio devices  
Portable and battery-powered equipment  
Post dc-dc regulation  
0
0V TO 5V  
1
2
3
4
5
V
(V)  
TRK  
Figure 4. ADP1714 with Output Voltage Tracking  
GENERAL DESCRIPTION  
The ADP1712/ADP1713/ADP1714, available in a tiny, 5-lead  
TSOT package, are low dropout linear regulators that operate  
from 2.5 V to 5.5 V and provide up to 300 mA of output current.  
The low 170 mV dropout voltage at a 300 mA load improves  
efficiency and allows operation over a wide input voltage range.  
Using a novel scaling architecture, ground current is a very low  
75 μA when driving a 100 μA load, making the ADP1712/  
ADP1713/ADP1714 ideal for battery-operated portable equipment.  
soft-start time. The ADP1713 allows a reference bypass capacitor  
to be connected, which reduces output voltage noise and  
improves power supply rejection. The ADP1714 includes a  
tracking feature, which allows the output to follow an external  
voltage rail or reference.  
The ADP1712/ADP1713/ADP1714 are optimized for stable  
operation with small 2.2 μF ceramic output capacitors, allowing  
good transient performance while occupying minimal board  
space. An enable pin controls the output voltage on all devices,  
and an undervoltage lockout circuit disables the regulator if IN  
drops below a minimum threshold. The parts also have short  
circuit protection and thermal overload protection, which  
prevent damage to the devices in adverse conditions.  
The ADP1712/ADP1713/ADP1714 are available in 16 fixed  
output voltage options. The ADP1712 is also available in an  
adjustable version, which allows output voltages that range from  
0.8 V to 5 V via an external divider. The ADP1712 fixed version  
allows an external capacitor to be connected to program the  
Rev. A  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
www.analog.com  
Fax: 781.461.3113 ©2007–2009 Analog Devices, Inc. All rights reserved.  
 
 
 
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