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ADP124ARHZ-2.9-R7 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce ADP124ARHZ-2.9-R7
Description  5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

ADP124ARHZ-2.9-R7 Fiches technique(HTML) 1 Page - Analog Devices

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5.5 V Input, 500 mA, Low Quiescent
Current, CMOS Linear Regulators
ADP124/ADP125
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2009 Analog Devices, Inc. All rights reserved.
FEATURES
Input voltage supply range: 2.3 V to 5.5 V
500 mA maximum output current
Fixed and adjustable output voltage versions
1% initial accuracy
Up to 31 fixed-output voltage options available
from 1.75 V to 3.3 V
Adjustable-output voltage range from 0.8 V to 5.0 V
Very low dropout voltage: 130 mV
Low quiescent current: 45 μA
Low shutdown current: <1 μA
Excellent PSRR performance: 60 dB at 100 kHz
Excellent load/line transient response
Optimized for small 1.0 μF ceramic capacitors
Current limit and thermal overload protection
Logic controlled enable
Compact 8-lead exposed paddle MSOP package
APPLICATIONS
Digital camera and audio devices
Portable and battery-powered equipment
Automatic meter reading (AMR) meters
GPS and location management units
Medical instrumentation
Point of load power
TYPICAL APPLICATION CIRCUITS
2
4
1
5
8
VOUT = 3.3V
VIN = 5.5V
VOUT
VOUT
VIN
VOUT
SENSE
NC
GND
VIN
EN
C2
C1
ADP124
OFF
ON
7
3
6
Figure 1. ADP124 with Fixed Output Voltage
2
4
1
5
8
VOUT = 3.3V
VIN = 5.5V
VOUT
VOUT
VIN
ADJ
NC
GND
VIN
EN
C2
R1
R2
C1
ADP125
7
3
6
OFF
ON
Figure 2. ADP 125 with Adjustable Output Voltage
GENERAL DESCRIPTION
The ADP124/ADP125 are low quiescent current, low dropout
linear regulators. They are designed to operate from an input
voltage between 2.3 V and 5.5 V and to provide up to 500 mA of
output current. The low 130 mV dropout voltage at a 500 mA
load improves efficiency and allows operation over a wide input
voltage range.
The low 210 μA of quiescent current with a 500 mA load makes the
ADP124/ADP125 ideal for battery-operated portable equipment.
The ADP124 is capable of 31 fixed-output voltages from 1.75 V
to 3.3 V. The ADP125 is the adjustable version of the device and
allows the output voltage to be set between 0.8 V and 5.0 V by
an external voltage divider.
The ADP124/ADP125 are specifically designed for stable operation
with tiny 1 μF ceramic input and output capacitors to meet the
requirements of high performance, space constrained applications.
The ADP124/ADP125 have an internal soft start that gives a
constant start-up time of 350 μs. Short-circuit protection and
thermal overload protection circuits prevent damage in adverse
conditions. The ADP124/ADP125 are available in an 8-lead
exposed paddle MSOP package. When compared with the
standard MSOP package, the exposed paddle MSOP package
has lower thermal resistance (θJA). The lower thermal resistance
package allows the ADP124/ADP125 to meet the needs of a
variety of portable applications while minimizing the rise in
junction temperature.


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