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ADP223CP-EVALZ

P1-P3P4-P6P7-P8
ADP223/ADP225 User Guide
UG-227
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the ADP223/ADP225 Dual, 300 mA Output, Adjustable, Low Noise, High
PSRR Voltage Regulator
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. C | Page 1 of 8
FEATURES
Input voltage range: 2.5 V to 5.5 V
Output current range: 0 mA to 300 mA per output
Output voltage accuracy: ±1%
Operating temperature range: −40°C to +125°C
GENERAL DESCRIPTION
The ADP223/ADP225 evaluation board is used to demonstrate
the functionality of the ADP223 and ADP225 dual adjustable
linear regulators. The ADP223 and ADP225 are identical except
that the ADP225 incorporates the quick output discharge
(QOD) function.
Simple device measurements, such as line and load regulation,
dropout voltage, and ground current consumption, can be
demonstrated with only a single voltage supply, voltmeters, a
current meter, and load resistors.
For more information about the ADP223/ADP225 linear
regulator, see the ADP222/ADP223/ADP224/ADP225 data sheet.
ADP223/ADP225 EVALUATION BOARD
09376-001
Figure 1. ADP223/ADP225 Evaluation Board (ADP223 Shown for Simplicity)
UG-227 ADP223/ADP225 User Guide
Rev. C | Page 2 of 8
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
ADP223/ADP225 Evaluation Board .............................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware and Schematic ................................. 3
Evaluation Board Configurations .............................................. 3
Output Voltage Measurements ....................................................... 4
Line Regulation ............................................................................. 4
Load Regulation ............................................................................5
Dropout Voltage ............................................................................5
Ground Current Measurements ......................................................6
Ground Current Consumption ...................................................6
Printed Circuit Board Layout Considerations...........................7
Ordering Information .......................................................................8
Bill of Materials ..............................................................................8
Related Links ..................................................................................8
REVISION HISTORY
5/14—Rev. B to Rev. C
Change to Evaluation Board Configurations Section .................. 3
Changes to Figure 2 .......................................................................... 3
4/12—Rev. A to Rev. B
Change to Table 1 ............................................................................. 3
Change to Table 2 ............................................................................. 8
11/11—Rev 0 to Rev. A
Added ADP225 ................................................................... Universal
5/11—Revision 0: Initial Version
ADP223/ADP225 User Guide UG-227
Rev. C | Page 3 of 8
EVALUATION BOARD HARDWARE AND SCHEMATIC
EVALUATION BOARD CONFIGURATIONS
The ADP223/ADP225 evaluation board is supplied with
different components. Components common to this version are
C1, C2, C3, J1, and J2. Figure 2 shows the schematic of the
evaluation board configuration.
The output voltages can be set according to the following equations:
V
OUT1
= 0.5 V(1 + R2/R1)
V
OUT2
= 0.5 V(1 + R3/R4)
C1
1µF
C3
1µF
VIN = 4.2V
VOUT2 = 2.8V
VOUT1 = 2.0V
C2
1µF
EN1
VOUT1
VIN
EN2
GND
6
4
3
2
ADJ2
1
8
5
7
ADJ1
R2
R1
R4
R3
ADP223
J1
J2
VOUT2
09376-002
Figure 2. Evaluation Board Schematic (ADP223 Shown for Simplicity)
Table 1. Evaluation Board Hardware Components
Component Function Description
U1
1
Linear regulator ADP223/ADP225 dual adjustable low dropout linear regulator.
C1 Input capacitor 1 µF input bypass capacitor, 0402 case.
C2, C3
Output capacitors
1 µF output capacitors, 0402 case. Required for stability and transient performance.
J1, J2 Jumpers These jumpers connect EN1 and EN2 to VIN for automatic startup.
R1, R2, R3, R4 Resistors Select R1 through R4 to set output voltages, 0603 case.
1
Component varies depending on the evaluation board type ordered.
P1-P3P4-P6P7-P8

ADP223CP-EVALZ

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Buy ADP223CP-EVALZ
Manufacturer:
Analog Devices Inc.
Description:
ADP223ACPZ-R7 Linear Regulator Evaluation Board
Lifecycle:
New from this manufacturer.
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