ROF-78E3.3-0.5SMD-R [ETC]
DC DC CONVERTER 3.3V 500MA;
| 型号： | ROF-78E3.3-0.5SMD-R |
| 厂家： | 
ETC |
| 描述： | DC DC CONVERTER 3.3V 500MA |
| 文件： | 总5页 (文件大小：1716K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
• 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
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
ROF-78E
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
Series
ROF-78E3.3-0.5SMD
Efficiency vs. Load
Ripple vs. Load
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
5Vin
12Vin
24Vin
36Vin
5Vin
12Vin
24Vin
36Vin
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Output Load [%]
Output Load [%]
ROF-78E5.0-0.5SMD
Efficiency vs. Load
Ripple vs. Load
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
9Vin
12Vin
24Vin
36Vin
9Vin
12Vin
24Vin
36Vin
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Output Load [%]
Output Load [%]
ROF-78E12-0.5SMD
Efficiency vs. Load
Ripple vs. Load
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
15Vin
24Vin
36Vin
15Vin
24Vin
36Vin
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Output Load [%]
Output Load [%]
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REV.: 5/2021
I-2
ROF-78E
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
Series
REGULATIONS
Parameter
Condition
Value
5.0% max.
1.0% max.
3.0% typ.
Output Accuracy
Line Regulation
Load Regulation(2)
low line to high line
10% to 100% load
100% to 50% load
100% to 10% load
100mV
200mV
Transient Response
Notes:
Note2: Operation below 10% load will not harm the converter, but specifications may not be met
PROTECTIONS
Parameter
Condition
Value
automatic recovery
Short Circuit Protection (SCP)
Short Circuit Input Current
Over Current Protection (OCP)
200mA max.
>950mA typ. Hiccup mode
Optional Diode Protection Circuit
Optional Protection 1:
Optional Protection 2:
Add a blocking diode to Vout if
current can flow backwards into
the output, as this can damage the
converter when it is powered down.
+Vin
+Vout
+Vin
+Vout
+Vout=
+Vout - Vsd forward
+Vin
+Vout
GND
ROF-78Exx-
0.5SMD
ROF-78Exx-
0.5SMD
+Vin
The diode can either be fitted
across the device if the source is
low impedance or fitted in series
with the output (recommended).
GND
GND
GND
GND
GND
ENVIRONMENTAL
Parameter
Operating Temperature Range
Operating Humidity
MTBF
Condition
Value
-40°C to +85°C
with derating @ free air convection (see graph)
non-condensing
5% - 95% RH max.
3500 x 103 hours
according to MIL-HDBK-217F, G.B.
+25°C
Derating Graph
(@ free air convection)
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
75 85
Ambient Temperature [°C]
www.recom-power.com
REV.: 5/2021
I-3
ROF-78E
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
Series
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
RoHs 2+
EAC
Report / File Number
Standard
RoHS-2011/65/EU + AM-2015/863
TP TC 004/2011
RU-AT.49.09571
EMC Compliance
Condition
Standard / Criterion
Information technology equipment - Radio disturbance
characteristics - Limits and methods of measurement
with external filter
EN55032, Class B
EMC Filtering Suggestion according to EN55032 Class A and Class B
Component List Class A and B
L1
+Vin
+Vout
ROF-78Exx-0.5SMD
+Vin
+Vout
GND
C1
C2
L1
GND
1µF
1µF
33µH
C2
C1
The capacitors used are ceramic capacitors, rated voltage 50V
GND
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter
Type
Value
Material
PCB
FR4, (UL94 V-0)
3.3, 5Vout
12Vout
12.5 x 13.5 x 4.0mm
12.5 x 13.5 x 4.5mm
Package Dimension (LxWxH)
Package Weight
1g typ.
Dimension Drawing (mm)
3.3Vout & 5Vout
12Vout
Pin Connections
Pin #
Single
+Vin
GND
+Vout
CTRL
12.50
12.50
1
2
3
4
Pin 2
Pin 2
Tolerance: x.x= 0.50mm
x.xx= 0.25mm
Recommended Footprint Details
Recommended Footprint Details
2.50
2.50
4
3
4
3
2
2
1
1
Bottom View
Top View
Bottom View
Top View
4
3
4
3
2
2
1
1
0.25
0.25
www.recom-power.com
REV.: 5/2021
I-4
ROF-78E
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
Series
INSTALLATION AND APPLICATION
Standard Application Circuit
+Vin
+Vout
+Vin
+Vout
GND
ROF-78Exx-0.5SMD
GND
CTRL
GND
Application Examples
High Efficiency, Isolated, Dual Unregulated Output
DC/DC Converter (1:1)
+Vin
+Vout
+Vin
+Vout
ROF-78Exx-0.5SMD
CTRL
GND
C1
Com
GND
GND
- Isolated dual output
- Wide Input Range
Isolated (up to 6kVDC), Wide Input Range Regulated Output
+24V
REC5/4812DRWZ/H6/A/SMD
+Vin
+Vout
+Vin
+3.3V
ROF-78Exx-0.5SMD
CTRL
GND
C1
C2
R1
R2
C3
GND
GND
Power Sequencing
- High isolation voltage
- Improved loading / line regulation
- Wide input voltage range
V
24V
- Point-of-load architecture
3.3V
t
PACKAGING INFORMATION
Parameter
Packaging Dimension (LxWxH)
Packaging Quantity
Type
tape and reel (carton)
tape and reel
Value
355.0 x 342.0 x 36.0mm
500pcs
Tape Width
24mm
Storage Temperature Range
Storage Humidity
-55°C to +125°C
95% RH max.
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applicationsꢀ its suitability lies in the responsibility of each customer. The
products are not authorized for use in safety-critical applications without RECOMꢁs explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause
loss of life, inflict bodily harm or damage property. The applicant 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.
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REV.: 5/2021
I-5
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