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POWER MANAGEMENT
Description
SC120/SC121EVB is the evaluation board (EVB) for the
SC120 and SC121ULTRT Low Voltage Synchronous Boost
Converters. Both devices are available in the MLPD-UT
1.5×2 mm 6 lead package. The SC120 is also available in
the SOT23-6 package. The EVB is designed to provide a
working demonstration of the SC120 or SC121.
This guide contains information relating to the usage of
the EVB and should be used in conjunction with the data-
sheet for the device. Component values on the EVB may
vary per specifi c customer requirements. The datasheet
contains detailed information including the electrical
characteristics and the detailed features of the device.
This guide can be used to familiarize the user with the
features of the device and for testing electrical character-
istics of particular interest to the reader.
SC120/SC121 EVB
With SC120UL/SC121UL Device (MLPD-UT-6 1.5×2mm package)
Rev. 1.1
Feature Content
•
Standard Schematic
•
Standard Bill of Materials
•
Layout
•
Operation
© 2011 Semtech Corporation
SC120/SC121 EVB
Evaluation Board
User's Guide
1
1
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Table of Contents
Related Manuals for Semtech SC120
Summary of Contents for Semtech SC120
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Page 1: Evaluation Board
• Converters. Both devices are available in the MLPD-UT Layout • 1.5×2 mm 6 lead package. The SC120 is also available in Operation the SOT23-6 package. The EVB is designed to provide a working demonstration of the SC120 or SC121. - Page 2 SC120/SC121 EVB SC120SK EVB With SC120SK Device (SOT23-6 package) Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners.
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Page 3: Schematic Drawings
SC120/SC121 EVB Schematic Drawings SC120/SC121 EVB PTP2 J_LOOP VOUT VOUT 4.7μH JP2 - ENL SC120UL/ SC121UL 0Ω 100kΩ 499kΩ 10μF 10μF 1MΩ 10μF 10μF Down SW PUSHBUTTON DPDT SC120SK EVB PTP2 J_LOOP VOUT VOUT 4.7μH JP2 - ENL SC120SK 0Ω... - Page 4 Test point 0.040 Ground 4.7μH 7 x 4 (mm) Inductor, Murata LQH43MN4R7K03 SC120UL or 1.5 x 2 (mm) Semtech integrated circuit — MLPD-UT-6 package SC121UL SC120SK 2.8 x 2.9 (mm) Semtech integrated circuit — SOT23-6 package C1, C2 22μF 0805 Capacitor, X5R dielectric, 6.3V rating, Murata GRM21BR60J226M...
- Page 5 SC120/SC121 EVB Layout Drawings — SC120/SC121 EVB Top layer metal and silkscreen...
- Page 6 SC120/SC121 EVB Layout Drawings — SC120/SC121 EVB Bottom layer metal (top-side view) with top-side silkscreen shown for reference...
- Page 7 SC120/SC121 EVB Layout Drawings — SC120SK EVB Top layer metal and silkscreen...
- Page 8 SC120/SC121 EVB Layout Drawings — SC120SK EVB Bottom layer metal (top-side view) with top-side silkscreen shown for reference...
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Page 9: Operation
The pushbutton switch connects EN to ground to disable The output voltage can be set to 3.3V using internal pro- the SC120/SC121 when the button is in the up position. gramming by installing a jumper on JP1. Any other When the pushbutton is in the down position, the switch voltage from 1.8V to 5.0V can be programmed using resis-... -
Page 10: Contact Information
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its offi cers, employees, subsidiaries, affi liates, and distributors harmless against all claims, costs damages and attorney fees which could arise.
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