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R-733.3P Datasheet Preview

R-733.3P Datasheet

DC/DC-Converter

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Features
Switching
Regulator
• Non-isolated
• Synchronous rectification design
• Adjustable output voltage
• 2, 3, 4Amp adjustable positive step down
Integrated switching regulator
• Over load protection
• Continuous short circuit protection
• Efficiency up to 97%
DC/DC Converter
R-7xxxP_D
Description
The R-7xxx series is a high performance 2.5V to 17V, 2Amp to 4Amp, 12-Pin SIP (single in-line
package), integrated switching regulator (ISR). The synchronous - rectified design yields excellent
efficiencies up to 97%. Short circuit protection reduces the short circuit input current to under 50mA.
Selection Guide
Part Input Output Vout Output Efficiency Max. Capacitive
Number Voltage Range Voltage Adjust Range (1) Current @ min Vin @ max. Vin Load (2)
[VDC] [VDC] [VDC] [A] [%] [%] [µF]
R-723.3x 4.5 - 28 3.3 2.5 - 5.5
2
95 89
200/6800
R-725.0x 6.5 - 28 5.0 3.0 - 5.5
2
96 91
200/6800
R-726.5x 8.5 - 28 6.5 5.0 - 8.0
2
97 93
200/6800
R-729.0x 12 - 28 9.0 7.0 - 11
R-7212x 15 - 28 12 10 - 14
R-7215x 19 - 28 15 13 - 17
2
2
2
96
97
97
93
95
96
200/6800
200/6800
200/6800
R-733.3x 4.5 - 28 3.3 2.5 - 5.5
3
94 89
200/6800
R-735.0x 6.5 - 28 5.0 3.0 - 5.5
R-736.5x 8.5 - 28 6.5 5.0 - 8.0
R-739.0x 12 - 28 9.0 7.0 - 11
3
3
3
95
97
96
92
93
94
200/6800
200/6800
200/6800
R-7312x 15 - 28 12 10 - 14
R-7315x 19 - 28 15 13 - 17
R-743.3x 4.5 - 28 3.3 2.5 - 5.5
3
3
4
97
97
93
96
96
88
200/6800
200/6800
200/6800
R-745.0x 6.5 - 28 5.0 3.0 - 5.5
4
95 91
200/6800
R-746.5x 8.5 - 28 6.5 5.0 - 7.5
4
96 93
200/6800
Notes:
Note1: Vin-Vout 1.5V~4.0V depending on Vout if adjust function is used
Note2: Please refer to basic characteristics on page I-2
2,3,4 Amp
SIP12
Vertical &
Horizontal
Single Output
IEC/EN60950-1 certified
Model Numbering
R-7_ __ x
Output Current (A)
nom. Output Voltage
Pinning (3)
Notes:
Note3: x can be „P“ = vertical through hole
x can be „D“ = bent pins for horizontal through hole mounting
Ordering Examples:
R-723.3P Iout= 2A
R-7312D Iout= 3A
nom. Vout= 3.3VDC P= vertical through hole
nom. Vout= 12VDC D= horizontal through hole
www.recom-power.com
REV.: 5/2018
I-1




Recom

R-733.3P Datasheet Preview

R-733.3P Datasheet

DC/DC-Converter

No Preview Available !

R-7xxxP_D
DC/DC Converter
Specifications (refer to standard application circuit, Ta= 25°C)
Series
BASIC CHARACTERISTICS
Parameter
Quiescent Current
Internal Power Dissipation
Output Current Limit
Minimum Load
ON/OFF CTRL (4)
Input Current of CTRL Pin
Internal Operating Frequency
Output Ripple and Noise
Maximum Capacitive Load
Condition
min. Vin to max.
ta<60°C
R-72xxx
R-73xxx
R-74xxx
DC-DC ON
DC-DC OFF
DC-DC OFF
normal start-up time, no external diodes
<1 second start-up time + diode protection circuit
Min.
10%
270kHz
Typ.
2.5A
3.75A
5.0A
Max.
30mA
1.4W
3.0A
4.25A
5.5A
Open or high, 4.5V min. / 28V max.
Low (Power OFF) 0.8V max.
100µA
300kHz
330kHz
40mVp-p
70mVp-p
200µF
6800µF
Notes:
Note4: ON/OFF pin driven by TTL (logic gate), open-collector bipolar transistor or open-drain MOSFET
How to calculate the max output current
The internal power dissipiation (PD ) follows the equation:
100
85
80
PD= Iout x Vout x (1-Effmax Vin )
60
Iout=
PD
Vout x (1-Effmax Vin )
Example: R-745.0P
Calculation 1:
Vin = 28V
Vout = 5V
Effmax Vin = 91%
PD = 1.4W
TAmbient = 60°C
Iout=
1.4W
5V x (1-0.91 )
= 3.11A
Calculation 3:
Vin = 12V
Effmax Vin = 94%
PD = 1.0W
TAmbient = 85°C
40
20
0
0 0.5 1 1.4
Internal Power Dissipation [W]
Calculation 2:
Vin = 28V
Vout = 5V
Effmax Vin = 91%
PD = 1.0W
TAmbient = 85°C
Iout=
1W
5V x (1-0.91 )
= 2.222A
Iout=
1W
5V x (1-0.94 )
= 3.33A
www.recom-power.com
continued on next page
REV.: 5/2018
I-2


Part Number R-733.3P
Description DC/DC-Converter
Maker Recom
Total Page 7 Pages
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