Analog Devices ADP2118 Evaluation Board ADP2118-EVALZ ADP2118-EVALZ Data Sheet
Product codes
ADP2118-EVALZ
Evaluation Board for ADP2118
EVAL-ADP2118
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.
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.
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Tel: 781.329.4700
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
GENERAL DESCRIPTION
The evaluation (demo) board provides an easy way to evaluate
the ADP2118 buck regulator. This data sheet describes how to
quickly set up the board to begin collecting performance data. Full
details on the ADP2118 are available in the ADP2118 data
sheet, which is available from Analog Devices, Inc., and should
be consulted in conjunction with this data sheet when using the
evaluation board.
the ADP2118 buck regulator. This data sheet describes how to
quickly set up the board to begin collecting performance data. Full
details on the ADP2118 are available in the ADP2118 data
sheet, which is available from Analog Devices, Inc., and should
be consulted in conjunction with this data sheet when using the
evaluation board.
This data sheet also describes the design process for the
ADP2118 buck regulator, including external component
selection, and how to obtain the best dynamic performance.
ADP2118 buck regulator, including external component
selection, and how to obtain the best dynamic performance.
Thermal performance is described, which provides a current
derating reference for the user when the ADP2118 is operating
at different ambient temperatures.
derating reference for the user when the ADP2118 is operating
at different ambient temperatures.
PRODUCT DESCRIPTION
The ADP2118 is a low quiescent current, synchronous,
step-down, dc-to-dc regulator in a compact 4 mm × 4 mm
LFCSP_WQ package. It uses a current mode, constant fre-
quency pulse width modulation (PWM) control scheme for
excellent stability and transient response. Under light loads,
the ADP2118 can be configured to operate in pulse frequency
modulation (PFM) mode that reduces switching frequency to
save power.
step-down, dc-to-dc regulator in a compact 4 mm × 4 mm
LFCSP_WQ package. It uses a current mode, constant fre-
quency pulse width modulation (PWM) control scheme for
excellent stability and transient response. Under light loads,
the ADP2118 can be configured to operate in pulse frequency
modulation (PFM) mode that reduces switching frequency to
save power.
The ADP2118 runs from input voltages of 2.3 V to 5.5 V. The
ADP2118 requires minimal external parts and provides a high
efficiency solution with its integrated power switch, synchron-
ous rectifier, and internal compensation. Other key features
include undervoltage lockout (UVLO), integrated soft start to
limit inrush current at startup, overvoltage protection (OVP),
overcurrent protection (OCP), and thermal shutdown (TSD).
ADP2118 requires minimal external parts and provides a high
efficiency solution with its integrated power switch, synchron-
ous rectifier, and internal compensation. Other key features
include undervoltage lockout (UVLO), integrated soft start to
limit inrush current at startup, overvoltage protection (OVP),
overcurrent protection (OCP), and thermal shutdown (TSD).
ADP2118 EVALUATION BOARD
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74
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Figure 1.