REV.: 2/2020
P-3
Evaluation Module
Specifications
(measured @ ta= 25°C, 1.5Vin, full load after warm up unless otherwise stated)
R-78S3.3-0.1-EVM-1
Schematic
Component List
Part
Description
Setting
BAT1
AA battery holder
J1
3 pin 0.100” (2.54mm) header for VEXT and VBAT
Factory set to on-board battery
J2*
2 pin 0.100” (2.54mm) header for VBAT and GND
Leave open if not used
J3
2 pin 0.100” (2.54mm) header for VEXT and GND
Leave open if not used
J4
2 pin 0.100” (2.54mm) header for input current
Leave closed if not used
J5
2 pin 0.100” (2.54mm) header for output current
Leave closed if not used
J6
2 pin 0.100” (2.54mm) header for CTRL (enable) and
GND
Leave open if not used
J7
2 pin 0.100” (2.54mm) header for VOUT and GND
Leave open if not used
J8
2 pin 0.100” (2.54mm) header for USB D+ and D-
Leave open if not used
S1
Slide switch
Factory set OFF
CON1
USB micro B connector
U1
R-78S3.3-0.1 boost converter
*Caution:
DO NOT PLACE A JUMPER ON J2. DOING SO WILL CAUSE THE BATTERY TO SHORT CIRCUIT AND CREATE THE RISK OF FIRE.
Vin Vout
GND CTRL
GND
GND
1
3
2
2
2
1
4
J7
0022032021
002032021
U1 R-78S3.3-0.1
R-78S
GND
GND
0022032021
J8
0022032021
J5
ZX62D-B-5P8
GND
VCC
USB
D+
D-
NC
CON1
1
4
1
2
5
2
3
2
1
J6
0022032021
0022032021
0022032021
GND
J4
J1
J2
J3
BAT1
GND
S1
2460
2
1
1
3
1
2
2
1
3
MHSI22
22-03-2031
2
1
1
2
1
2
