Features
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Efficiency up to 95%, no Need for Heatsinks!
Industry Standard Pin-Out
1.5A Start-Up Overload Capacity
Non-Isolated Regulator with very low Standby
Current
Wide Input Range (7V ~ 42V)
Short Circuit Protection
Fixed Switching Frequency (350kHz), Shielded
Magnetics
INNOLINE
DC/DC-Converter
with 3 year Warranty
Description
The R-78T is a switching regulator with a wide input voltage range and a low profile SMD package. Three output
voltages are available as standard: 3.3V, 5V and 12V. Due to the 1.5A start-up overload capability, the R-78T can
be used to replace 1A or 1.5A regulators in many applications. These modules come with three different styles to
be pin-compatible with existing solutions, but at a lower cost.
Selection Guide
Part
Number
SIP3
R-78T3.3-1.0*
R-78T5.0-1.0*
R-78T12-1.0*
Input
Range
(V)
7 – 42
8 – 42
15 – 42
Output
Voltage
(V)
3.3
5.0
12
Output
Current
(A)
1.0
1.0
1.0
Efficiency
Min. Vin
Max. Vin
(%)
(%)
88
92
95
79
85
92
1.0 AMP
SMD
Single Output
*add suffix /FC, /AC or /AL for required pinning option
* add suffix -R for tape&reel packing e.g.
R-78T3.3-1.0/FC-R
.
-Tray for Tray packaging, e.g. R-78T5.0-1.0/AC-Tray For more details see Application Notes.
Specifications
( typical at 25°C, 10% minimum load, unless otherwise specified )
Input Voltage Range
3.3V
5V
12V
7-42VDC
8-42VDC
15-42VDC
1mA typ.
C Filter
±2% typ. / ±3% max.
±0.2% typ.
±0.4% typ.
10%
50mVp-p typ. / 100mVp-p max.
±250mV max.
350KHz typ.
1.5A / 10sec max.
Current limited to 3.5A typ.
-40°C to 85°C
-55°C to 125°C
5% to 95% RH max.
23 x 27.2 x 10mm
23 x 29.4 x 8mm
4.5g typ.
Free Air Convection
367 x 10³ hours
2011/65/EU
6/6
RoHS
Iout (Amps)
No Load Input Current
Input Filter
Voltage Accuracy
Line Regulation
Load Regulation
Minimum Load
Ripple & Noise (20MHz Limited)
Transient Response 50mA/uS
Operating Frequency
Current Limit
Short Circuit Protection
Operating Temperature
Storage Temperature
Humidity
Dimension
Weight
Cooling Method
MTBF (25°C)
R-78T-1.0
Derating-Graph
(Ambient Temperature)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Safe Operating Area
(LL to HL at Full Load)
(10-100%)
100% - 50% Load
10s
Overload
suffix /AC or /AL
suffix /FC
MIL-HDBK-217F
-40
Standard Application Circuit
+Vin
1
C1
Optional
GND
85
50
75
100
55
Operating Temperature (°C)
0
25
R-78T5.0-1.0
2
3
C2
Optional
+Vout
GND
Refer to Application Notes
I-33
www.recom-power.com
REV: 1/2016
INNOLINE
DC/DC-Converter
Package Style and Pinning (mm)
R-78Txx-1.0
Series
R-78Txx-1.0/FC
Pin Connections
Pin #
1
2
3
+Vin
GND
+Vout
Recommended Footprint
10.16
11.10
23
10.16
2.2
11.10
Bottom View
25
Top
2.2
4.00
Bottom View
1 2 3
1.20± 0.1
2.54
2.54
5.08
0.64
±
0.1
2.2
6.72
8 max.
Tolerance ±0.5mm unless otherwise specified
R-78T
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
written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer
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.
I-36
REV: 1/2016
www.recom-power.com
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