R-78T3.3-1.0.pdf 데이터시트 (총 6 페이지) - 파일 다운로드 R-78T3.3-1.0 데이타시트 다운로드

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Features
Switching
Regulator
• Efficiency up to 95%, no need for heatsinks
• Industry standard pin-out
• 1.5A start-up overload capacity
• Non-isolated regulator, very low standby current
• Wide input range (7V -74VDC)
• Short circuit protection
• Fixed swiching frequency (250kHz), shielded
magnetics
DC/DC Converter
R-78T-1.0
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
R-78T3.3-1.0
R-78T5.0-1.0
R-78T12-1.0
Input
Voltage Range
[VDC]
7 - 42
8 - 42
15 - 42
Output
Voltage
[VDC]
3.3
5.0
12
Output Efficiency
Current
@ min Vin @ max. Vin
[mA] [%] [%]
1000
88
79
1000
92
85
1000
95
92
Model Numbering
R-78T__-1.0/__-__
Output Voltage
Output Current
Packaging (1)
Pinning (2)
Notes:
Note1: add suffix „-R“ for tape & reel packaging or „-Tray“ for tray packaging
Note2: add suffix „/FC“, „/AC“ or „/AL“ for required pinning option, for more
information see page I-5 to I-6
Ordering Examples:
R-78T3.3-1.0/FC-R = 3.3VDC Output Volage, 1.0A, FC pinning, tape and reel packaging
R-78T5.0-1.0/AC-Tray = 5.0VDC Output Voltage, 1.0A, AC pinning, tray packaging
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REV.: 2/2018
I-1

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R-78T-1.0
DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
Series
BASIC CHARACTERISTICS
Parameter
Internal Input Filter
Input Voltage Range
Overload Capability (3)
Quiescent Current
Minimum Load
Internal Operating Frequency
Output Ripple and Noise
Condition
nom. Vin= 3.3VDC
nom. Vin= 5.0VDC
nom. Vin= 12VDC
peak duty cycle 10%
20MHz BW
Min.
7VDC
8VDC
15VDC
10%
Typ.
1mA
350kHz
50mVp-p
Max.
C filter
42VDC
42VDC
42VDC
150%, 10s
100mVp-p
Notes:
Note3: For more inforation, please refer to „Overload Capability Graph“ on page I-4
R-78T3.3-1.0
Efficiency vs. Load
Ripple vs. Load
100
90
80
70
60
50
40
30
7Vin
12Vin
20 24Vin
10
36Vin
42Vin
0
10 20 30 40 50 60 70 80 90 100
Output Load [%]
45
40
35
30
25
20
15
10 24Vin
36Vin
5 42Vin
0
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
R-78T5.0-1.0
Efficiency vs. Load
Ripple vs. Load
100 45
90 40
80 35
70
60
50
40
30
8Vin
12Vin
20 24Vin
10
36Vin
42Vin
0
10 20 30 40 50 60 70 80 90 100
30
25
20
15
10 24Vin
5
36Vin
42Vin
0
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
Output Load [%]
continued on next page
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REV.: 2/2018
I-2

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R-78T-1.0
DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
Series
R-78T12-1.0
Efficiency vs. Load
Ripple vs. Load
100
90
80
70
60
50
40
30
15Vin
20 24Vin
10 36Vin
42Vin
0
10 20 30 40 50 60 70 80 90 100
Output Load [%]
45
40
35
30
25
20
15
10 24Vin
5
36Vin
42Vin
0
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
REGULATIONS
Parameter
Output Accuracy
Line Regulation
Load Regulation
Transient Response
PROTECTIONS
Parameter
Short Circuit Protection (SCP)
Condition
full load
low line to high line, full load
10% to 100% load
50mA/uS
100% - 50% load
Condition
Value
±2.0% typ. / ±3.0% max.
±0.2% typ.
±0.4% typ.
±250mV max.
Value
current limited to 3.5A typ.
ENVIRONMENTAL
Parameter
Operating Temperature Range
Operating Humidity
MTBF
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Condition
with derating @ free air convection (see graph)
non-condensing
according to MIL-HDBK-217F, G.B.
+25°C
continued on next page
REV.: 2/2018
Value
-40°C to +85°C
5% - 95% RH max.
6318 x 103 hours
I-3

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R-78T-1.0
DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
Series
Derating Graph
(@ Free air convection)
Overload Capability Graph
160
150 10s overload
140 Peak Current
Continuous Current
120
150
100
80
60
100
90
40
20 100% load
150% overload
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
55 85
Ambient Temperature [°C]
0 10
60 70
Time [s]
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
EAC
RoHs 2+
Report / File Number
RU-AT.49.09571
Standard
TP TC 004/2011
RoHS-2011/65/EU + AM-2015/863
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter
Material
Dimension (LxWxH)
Weight
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Type
PCB
“/AC” or “/AL”
“/FC”
continued on next page
REV.: 2/2018
Value
FR4, (UL94 V-0)
23.0 x 27.2 x 10.0mm
23.0 x 29.4 x 8.0mm
4.5g typ.
I-4

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DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
Dimension Drawing (mm)
R-78Txx-1.0/AC
23.0
8.96
R-78T-1.0
Series
Pinning information
Pin # Single
1 +Vin
2 GND
3 +Vout
Tolerance:
xx.x = ±0.5mm
xx.xx= ±0.25mm
R-78Txx-1.0/AL
2x2.54= 5.08
11.5
123
Bottom View
Recommended Footprint Details
2x mounting pads Ø2.0
Top View
20.0
23.0
123
1.20
8.96
Pinning information
Pin # Single
1 +Vin
2 GND
3 +Vout
Tolerance:
xx.x = ±0.5mm
xx.xx= ±0.25mm
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2x2.54= 5.08
11.5
Recommended Footprint Details
2x mounting pads Ø2.0
123
Bottom View
5.08
20.0
Top View
123
1.20
continued on next page
REV.: 2/2018
I-5