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Evaluation Module
Specifications
(measured @ ta= 25°C, 1.5Vin, full load after warm up unless otherwise stated)
Overload Capability Graph
Quick Start Guide
• Insert the AA battery into the battery holder (only one way possible).
• If powering USB-powered demonstrators: plug in the micro-USB cable.
• Turn on and off using the slide switch.
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.
• To measure the input and output current of the R-78S, remove the jumpers on J4 and J5. J4 and J5 are standard 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 pin 2 (VEXT).
• When the on-board AA battery is used, change the jumper position on J1 to pin 2 and pin 3 (VBAT).
• To set the R-78S into sleep mode, apply the provided jumper on both pins of J6 (CTRL to GND).
Component Placement
www.recom-power.com
R-78S3.3-0.1-EVM-1
150
140
120
100
80
60
40
20
0
0.65
R-78SXX-0.1-EVM-1
BAT1
GND
GND
J3
J2
VEXT
VBAT
J1
VEXT VBAT
S1
OFF
ON
I_IN
J4
peak current
continuous current
1.2
1.8
1.3
1.85
Input Voltage [V]
I_OUT
J5
U1
J6
J7
VOUT GND
GND CTRL
REV.: 2/2020
2.4
3.15
FOR EVALUATION ONLY
CON1
J8
D-
D+
P-2
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