EVAL-ADP2504| Application Note
Evaluation Board for the 1 A Buck Boost Converter EVAL-ADP2504
FEATURES
1 A buck boost regulator Input voltage range: 2.3 V to 5.5 V Fixed output voltage range: 2.8 V to 5.0 V Switching frequency: 2.5 MHz 1.5 H inductor compatible Maximum output current: 1 A Typical quiescent current: 38 A Automatic pulse skip mode Sychronization pin
GENERAL DESCRIPTION
The ADP2504 evaluation board is a complete buck boost converter solution that tests the ADP2504, a high efficiency, low quiescent current step-up/step-down, dc-to-dc converter. It provides accurate ( 3%) regulation for load currents of up to 1 A. The ADP2504 evaluation board is available with a fixed 3.3 V option. Additional voltage options are available upon request from Sales at Analog Devices, Inc. At high load currents, the ADP2504 uses a current-mode, fixed frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2504 features an optional power-saving pulse skip mode that reduces the switching frequency under light load conditions to save power.
APPLICATIONS EVALUATION BOARD DIAGRAM
ADP2504 EVALUATION BOARD
VIN
L1 C1 ADP 2504 C2 C3
VOUT
R3 PGND
C4 PGND
R2
R1
EN
SYNC
Figure 1.
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. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 2008 Analog Devices, Inc. All rights reserved.
07512-001
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