Datasheet

R-78AA-0.5
12.35
Bottom View
0.50
Top View
15.30
8.80
15.00
2.54x4
9.24
10 7
2
4
5
9.40
9.60
RECOM
R-78AAxx-1.0SMD
xxxx
1
2.54
13.00
1.80
10 7
2415
1.30
1.20
3
68
9
3
6
89
Package Style and Pinning (mm)
SMD 10Pin Package
Pin Connections
Pin #
1,2 +Vin
3,7,8,9 GND
4,5 +Vout
6 V adj
10 Remote On/Off
xx.x ±0.5mm
xx.xx ±0.25mm
Table 1: Adjustment Resistor Values
INNOLINE
DC/DC-Converter
R-78AAxx-0.5 SMD
Series
Recommended Footprint Details
R1 R2 R3 Vref(V)
1.8V 10KΩ 21KΩ 5.6KΩ 1.23
2.5V 22KΩ 21KΩ 5.6KΩ 1.23
3.3V 16.9KΩ 10KΩ 5.6KΩ 1.23
5.0V 30.9KΩ 10KΩ 10KΩ 1.23
6.5V 43KΩ 10KΩ 10KΩ 1.23
9V 63.4KΩ 10KΩ 22.1KΩ 1.23
12V 88.7KΩ 10KΩ 22.1KΩ 1.23
Rdown
Rup
Vadj
+V
o
GND
R3
R1
R2
+V
in
GND
Controlled IC
Vref
R2(R1+R3) x (Vref - Vo) + Vref x R1R3
Trim Down Rdown =
R
2Vo - Vref (R1 + R2)
R
2R3 (Vref - Vo) + Vref R1 (R2 + R3)
Trim up R
up =
R
2 (Vo - Vref) - Vref R1
www.recom-power.com I-11REV: 2/2016
The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit
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shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.