Recom R-78S3.3-0.1 Quick Start Manual page 2

Evaluation Module
R-78S Evaluation Module User Guide
QUICK START GUIDE
Insert the AA battery into the battery holder (only one way possible).
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If powering USB-powered demonstrators: plug in the micro-USB cable.
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Turn on and off using the slide switch.
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Note: to reduce the power consumption, no indicator LED is fitted. Remember to switch off to conserve the battery.
The output voltage is accessed via J7 or the USB port.
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To measure the input and output current of the R-78S, remove the jumpers on J4 and J5. J4 and J5 are standard
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0.100" (2.54mm) pin headers to allow current measurement device connections (ampere meter, scope probe).
When an external voltage source (no on-board battery) is used on J3, change the jumper position on J1 to pin 1 and
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pin 2 (VEXT).
When the on-board AA battery is used, change the jumper position on J1 to pin 2 and pin 3 (VBAT).
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To set the R-78S into sleep mode, apply the provided jumper on both pins of J6 (CTRL to GND).
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CONTENTS
R-78S3.3-0.1 Evaluation Module PBA
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Micro-USB Type B to Micro-USB Type B Cable
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Terms and Conditions Letter
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PA-2
Figure 1: R-78S3.3-0.1 output current vs. input voltage
REV.: 0/2017
R-78S3.3-0.1-EVM-1
Series
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