• Low profile 4.5mm
• Low cost
Features
DC/DC Converter
• Wide input range (5V - 36V)
• Short circuit protection
• Castellated connections
Switching
Regulator
ROF-78E-0.5SMD
Description
0.5 Amp
Non Isolated
Power Module
3
The ROF-78E is a switching regulator with a wide input voltage range, high efficiency and a low profile,
pin-less SMD package. Three low-ripple output voltages are available as standard: 3.3V, 5V or 12V with
500mA continuous output current rating over the full operating temperature range of -40°C to +75°C
without derating. An enable connection allows power sequencing or very low standby consumption
(3.5µA) for battery powered applications. These modules can be SMD reflow soldered. The connection
pads have corner half-vias to enable optical inspection of the joints after soldering.
Selection Guide
Part
Number
Input
Voltage Range
[VDC]
Output
Voltage
[VDC]
Output
Current
[mA]
Efficiency
typ.
[%]
ROF-78E3.3-0.5SMD-R
ROF-78E5.0-0.5SMD-R
ROF-78E12-0.5SMD-R
5 - 36
9 - 36
15 - 36
3.3
5.0
12
500
500
500
73 - 84
79 - 87
87 - 92
C
RoHS2
+
REACH
compliant
compliant
10 from 10
Model Numbering
I
ROF-78E__-__SMD-R
Packaging(1)
Output Voltage
Output Current
Notes:
Note1: suffix -R for tape&reel packaging (refer to “PACKAGING INFORMATION”
Ordering Examples:
ROF-78E3.3-0.5SMD-R = 3.3Vout, 0.5A Output Current, SMD, tape and reel packaging
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
BASIC CHARACTERISTICS
Parameter
Input Voltage Range
Input Current
Condition
nom. Vin= 12VDC and 24VDC
Min.
5VDC
Typ.
Max.
36VDC
500mA
5mA
Quiescent Current
Minimum Load (2)
10%
Open or >1.75VDC
GND or <0.7VDC
DC-DC ON
max. Vin= 5VDC
ON/OFF CTRL
DC-DC OFF
3.5µA
6.5µA
Standby Current
DC-DC OFF
Internal Operating Frequency
Output Ripple and Noise
650kHz
20MHz BW
100mVp-p
continued on next page
www.recom-power.com
REV.: 5/2021
I-1