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.
1.0 AMP
SMD
Single Output
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
*add suffix /FC, /AC or /AL for required pinning option
Specifications
( typical at 25°C, 10% minimum load, unless otherwise specified )
Input Voltage Range
3.3V
5V
12V
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)
MIL-HDBK-217F
suffix /AC or /AL
suffix /FC
100% - 50% Load
(LL to HL at Full Load)
(10-100%)
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
Iout (Amps)
2011/65/EU
6/6
RoHS
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
10s
Overload
-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-international.com
REV: 1/2014
INNOLINE
DC/DC-Converter
Package Style and Pinning (mm)
R-78Txx-1.0
Series
R-78Txx-1.0/AC
Pin Connections
Æ
2.00
(2x Mounting Pads)
Recommended Footprint
20.00
Pin #
1
2
3
+Vin
GND
+Vout
23
11.23
Bottom View
11.10
25
Bottom
Top View
1 2 3
2.2
4.00
1.20
2.54
2.54
5.08
0.64*0.64
2.2
2.82
10 max.
Tolerance ±0.5mm unless otherwise specified
R-78Txx-1.0/AL
Recommended Footprint
20.00
5.08
(2x Mounting Pads)
R-78T
∅
2.00
Pin Connections
Pin #
1
2
3
5.08
23
+Vin
GND
+Vout
11.10
7.40
Bottom View
25
4.00
11.23
Top View
1 2 3
2.2
Bottom
1.20
2.54
2.54
5.08
0.64*0.64
2.2
2.82
10 max.
Tolerance ±0.5mm unless otherwise specified
www.recom-international.com
REV: 1/2014
I-35
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
2.54
2.54
5.08
0.64*0.64
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. All products are designed for non-safety critical commercial and industrial applications.
The Buyer agrees to implement safeguards that anticipate the consequences of any failures that might cause harm, loss of life and/or damage property.
I-36
REV: 1/2014
www.recom-power.com
Microcontroller MCU
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