RECOM R-78XX

Features
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INNOLINE
Efficiency up to 97%,Non isolated,
no need for heatsinks
Pin-out compatible with LM78XX Linears
Very low profile( L*W*H=11.5*7.5*10.2 )
Wide input range.(4.75V ~ 34V)
Short circuit protection, Thermal shutdown
Non standard outputs available as specials
between 1.5V ~15.5V
Low ripple and noise
DC/DC-Converter
R-78xx-0.5
Series
0.5 AMP
SIP3
Single Output
Selection Guide
Part
Number
SIP3
Input
Range (1)
(V)
Output
Voltage
(V)
Output
Current
(A)
Efficiency
Min. Vin
Max. Vin
(%)
(%)
R-781.5-0.5
4.75 – 30
1.5
0.5
73
63
R-781.8-0.5
4.75 – 34
1.8
0.5
82
71
R-782.5-0.5
4.75 – 34
2.5
0.5
87
77
R-783.3-0.5
4.75 – 34
3.3
0.5
91
81
R-785.0-0.5
6.5 – 34
5.0
0.5
94
86
R-786.5-0.5
8.0 – 34
6.5
0.5
95
88
R-789.0-0.5
11 – 34
9.0
0.5
96
92
R-7812-0.5
15 – 34
12
0.5
97
94
R-7815-0.5
18 – 34
15
0.5
97
95
Note 1:1.5V Output can be unstable with Vin>30VDC
Description
Derating-Graph
The R-78xx-Series high efficiency switching regulators are ideally suited to replace 78xx linear regulators
and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as heat so there
is no need for any heat sinks with their additional space and mounting costs. Low ripple and noise figures
and a short circuit input current of typically only 7mA round off the specifications of this versatile converter
series.
This R-78xx-0.5 is fully certified to EN 60601-1-2 (Medical Equipment), EN 55022 (Emissions), and
EN55024 (Immunity) EMC Standards.
(Ambient Temperature)
Output Power (%)
120
100
80
60
40
20
0
Safe Operating Area
-40
0
25
50
Operating Temperature (°C)
146
March-2006
85
75
100
71
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INNOLINE
R-78xx-0.5
Series
DC/DC-Converter
Specifications (refer to the standard application circuit, Ta: 25°C)
Characteristics
Input Voltage Range
Conditions
1.5V
1.8V to 15.5V
Min.
4.75
4.75
Typ.
Max.
30.0V
34.0V
Output Voltage Range (for customized parts)
All Series
1.25
15.5V
Output Current
All Series
50
500mA
Output Current Limit
All Series
Short Circuit Input Current
All Series
2000mA
10
30mA
Internal Power Dissipation
0.4W
Short Circuit Protection
Continuous, automatic recovery
Output Voltage Accuracy (At 100% Load)
Line Voltage Regulation (Vin = min. to max. at full load)
Load Regulation (10 to 100% full load)
Dynamic Load Stability
Ripple & Noise (without Output Capacitor)
Ripple & Noise (with Output Capacitor=100µF)
Temperature Coefficient
All Series
1.5V to 6.5V
9V to 15.5V
1.5V to 6.5V
9V to 15.5V
100% <-> 50% load
100% <-> 10% load
1.5V to 6.5V
9V to 15.5V
1.5V to 6.5V
9V to 15.5V
±2
0.2
0.1
0.4
0.25
±75mV
±3%
0.4%
0.2%
0.6%
0.4%
20mVp-p
30mVp-p
15mVp-p
25mVp-p
-40°C ~ +85°C ambient
0.015%/°C
Max capacitance Load
220µF
Switching Frequency
280
Quiescent Current
330
Vin = min. to max. at 0% load
Operating Temperature Range
380kHz
5
7mA
-40°C
+85°C
Operating Case Temperature
+100°C
Storage Temperature Range
-55°C
+125°C
Case Thermal Impendance
70°C / W
Thermal Shutdown
MTBF (+25°C)
.
(+71°C)
}
±100mV
30mVp-p
40mVp-p
20mVp-p
35mVp-p
Internal IC junction
Detailed Information see
Application Notes chapter "MTBF"
+160°C
using MIL-HDBK 217F
21098 x 10³ hours
using MIL-HDBK 217F
4212 x 10³ hours
Standard Application Circuit
+Vin
R-78xx-0.5
C1
ON
OFF
+Vout
C2
47µF
100µF
(Optional)
1ms
-Vin
-Vout
To protect the converter during power-up, use soft start Vin and C1=47µF
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March-2006
147
INNOLINE
R-78xx-0.5
Series
DC/DC-Converter
Characteristics
Ripple
Efficiency
100
Vo=12V,15 V
Vo=9V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V
50
50
Vo=12V
Vo=15V
Vo=9V
Vo=5V
Vo=3.3V
Ripple (mV)
Efficiency (%)
25
10
Vin (V)
20
Vo=1.8V
Vo=1.5V
30 34
10
Vin (V)
Efficiency Vs Vin (Full Load)
100
50
Vo=15V
Vo=12V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V
50
Vo=12V
Vo=15V
Vo=9V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V
Efficiency (%)
Ripple (mV)
25
0.1
0.2
0.3
0.4
0.5
0.6
0.1
Output Current ( A )
0.2
0.3
0.4
0.5
0.6
Output Current ( A )
Efficiency Vs Load ( Vin=Max )
Ripple Vs Load ( Vin=24V )
100
50
Vo=12V,15V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V
25
Vo=15V
Vo=12V
Vo=1.8V
Vo=3.3, 9V
Vo=5V
Vo=1.5V
Ripple (mV)
Efficiency (%)
50
0.1
0.2
0.3
0.4
0.5
0.1
0.6
0.2
0.3
0.4
0.5
0.6
Output Current ( A )
Output Current ( A )
Ripple Vs Load ( Vin=Min )
Efficiency Vs Load ( Vin=Min )
148
30 34
20
Ripple Vs Vin (full load)
March-2006
www.recom-international.com
R-78xx-0.5
Series
INNOLINE
DC/DC-Converter
Application Examples
High efficiency, isolated, dual unregulated outputs
DC/DC Converter ( 1:1 )
+Vout
R-78xx-0.5
+Vin
Com
C1
-Vout
C2
- Isolated dual outputs
-Vin
- Wide input range 4.75V to 34V
C1 , C2 : optional
Isolated (up to 6KV), wide Input range regulated output
DC/DC Converter ( 1:1 )
+Vin
R-78xx-0.5
+Vout
C1
-Vin
C2
- High isolation voltage
- Improved loading / line regulation
- Wide Input Voltage Range
- Point-of-Load Architecture
-Vout
C1 , C2 : optional
Package Style and Pinning (mm)
SIP3 PIN Package
3rd angle
projection
7.55
10.2
RECOM
R-785.0-0.5
**** Pb
RECOM
R-785.0-0.5
0.51 typ.
**** Pb
1 2 3
0.7 typ.
4.10
Recommended Footprint Details
1.00 ø+0.15/–0
11.50
0.25
Bottom View
3.21
5.08
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2.54
2.0
Top View
2.54
March-2006
Pin Connections
Pin #
1
+Vin
2
GND
3
+Vout
xx.x ±0.5mm
xx.xx ±0.25mm
149