ADP1740-1.5-EVALZ

Evaluation Board for the
ADP1740/ADP1741
EVAL-ADP1740/ADP1741
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied as is and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. 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. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
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 ©2008 Analog Devices, Inc. All rights reserved.
FEATURES
Input voltage range: 1.6 V to 3.6 V
Output current range: 500 μA to 2 A
Output voltage accuracy: ±2%
Operating temperature range: −40°C to +125°C
GENERAL DESCRIPTION
The ADP1740/ADP1741 evaluation board is used to demon-
strate the functionality of the ADP1740/ADP1741 series of
linear regulators.
Simple device measurements, such as line and load regulation,
dropout, and ground current, can be demonstrated with just a
single voltage supply, a voltmeter, a current meter, and load
resistors.
For more details about the ADP1740/ADP1741 linear regula-
tors, visit www.analog.com.
EVALUATION BOARD DIGITAL PICTURE
07154-001
Figure 1.
EVAL-ADP1740/ADP1741
Rev. 0 | Page 2 of 12
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Evaluation Board Digital Picture .................................................... 1
Revision History ............................................................................... 2
Evaluation Board Hardware and Schematic ................................. 3
Evaluation Board Configurations .............................................. 3
Output Voltage Measurement ......................................................... 4
Line Regulation ............................................................................. 5
Load Regulation ............................................................................ 5
Dropout Voltage ............................................................................5
Ground Current Measurement ........................................................6
Ground Current Consumption ...................................................6
PCB Layout Considerations .............................................................7
Thermal Considerations ...............................................................7
Ordering Information .................................................................... 11
Bill of Materials ........................................................................... 11
Ordering Guide .......................................................................... 11
ESD Caution................................................................................ 11
REVISION HISTORY
11/08—Revision 0: Initial Version
EVAL-ADP1740/ADP1741
Rev. 0 | Page 3 of 12
EVALUATION BOARD HARDWARE AND SCHEMATIC
EVALUATION BOARD CONFIGURATIONS
The ADP1740/ADP1741 evaluation boards are shipped with
different components depending on which version is ordered.
Components common to all versions are C1, C2, C3, R3, J1,
J2, and J3.
Figure 2 shows the schematic of this evaluation board
configuration. Table 1 lists and describes the hardware
components.
PG
GND
SS
NC
VIN
VIN
VIN
VIN
VIN
VOUT
VOUT VOUT
VOUT
VOUT
EN
ADP1740: SENSE/
ADP1741: ADJ
1
2
3
4
11
12
10
9
5
6
7
8
15
16
TP3
TP1
14
13
R3
100k
V
IN
= 1.8V
V
OUT
= 0.5V(1+R1/R2)
ADP1741 ONLY
07154-002
NC = NO CONNECT
C3
10nF
C1
4.7µF
C2
4.7µF
R2
TP7
R1
TP6
TP5
TP8
TP2
PG
TP9
TP4
J2
J3
J1
Figure 2. Evaluation Board Schematic
Table 1. Evaluation Board Hardware Components
Component Function Description
U1
1
Linear Regulator ADP1740 or ADP1741 Low Dropout Linear Regulator.
C1 Input Capacitor 4.7 μF Input Bypass Capacitor.
C2 Output Capacitor 4.7 μF Output Capacitor. Required for stability and transient performance.
C3 Soft Start Capacitor 10 nF Soft Start Capacitor.
R1, R2 Output Voltage Set Not Installed.
R3 Pull-Up Resistor 100 kΩ Pull-Up Resistor for Power Good (PG).
J1 Jumper Jumper Connects EN to VIN for Automatic Startup.
J2 Jumper Jumper Connects SENSE to V
OUT
(for ADP1740 only).
J3 Jumper Jumper Connects Soft Start Capacitor C3.
1
Component varies depending on the evaluation board model ordered.

ADP1740-1.5-EVALZ

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Evaluation Board For The Adp1740/Adp1741
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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