OUTPUT SPECIFICATIONS
Voltage accuracy ±1.0%
Line regulation LL-HL, single output ±1.5%
LL-HL, dual output ±1.5%
Load regulation FL to 0.25%FL, dual outputs ±2.5%
loaded equally
Ripple and noise 5Hz to 20MHz 150mV pk-pk, max.
Voltage balance Duals ±2.0%
Temperature coefficient All outputs ±0.02%/°C, max.
Overvoltage protection All outputs 125% Vout, Nom.
Short circuit protection 10s, max.
INPUT SPECIFICATIONS
Input voltage range 24VDC 18 to 36VDC
48VDC 36 to 72VDC
Input filter See Note 7 Pi type
No load input current 5mA
GENERAL SPECIFICATIONS
Efficiency See table 80% typical
78%, min.
Isolation voltage Input/output 500VDC, min.
Switching frequency Fixed 200kHz
Case material Non-conductive
black plastic
Material flammability UL94V-0
Weight 14.2g (0.5oz)
MTBF MIL-HDBK-217D 266,000 Hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient -25°C to +71°C
Non-operating -40°C to +125°C
Case +95°C max
Cooling Free air convection
Derating None required
Recommended for new design-ins
DR SERIES
Single and dual output
[ 2 YEAR WARRANTY ]
• Hybrid technology
• 3 Watts in D.I.L. package
• 18-36V and 36-72V input
• Typical efficiency 80%
• Isolated outputs
• Regulated outputs
• Low profile, 12.7mm height
• No derating to 70°C
The DR Series is a family of dual in line packaged DC/DC converters. It has a
unique combination of three high performance features wide input voltage
range, high efficiency, and high power density. In addition to this, all outputs are
regulated and isolated from the input. This performance is made possible by
implementing a 200kHz switching design in hybrid technology. With input
voltage ranges of 18-36V, 36-72V and 80% typical efficiency, these devices are
ideally suited for on-board logic or analog circuits supplied by telecom
distributed power voltages, and for cellular and portable telecommunications
systems.
SPECIFICATION
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
PAGE 1
INPUT OUTPUT OUTPUT INPUT TYPICAL REGULATION (3) MODEL
VOLTAGE (1) VOLTAGE CURRENT CURRENT (2) EFFICIENCY LINE (4) LOAD (5) NUMBER
18-36VDC 5VDC 500mA 134mA 78% ±1.5% ±2.5% DR24S05/500G
18-36VDC 12VDC 250mA 151mA 83% ±1.5% ±2.5% DR24S12/250G
18-36VDC 15VDC 200mA 153mA 81% ±1.5% ±2.5% DR24S15/200G
18-36VDC ±5VDC ±250mA 150mA 83% ±1.5% ±2.5% DR24D05/250G
18-36VDC ±12VDC ±125mA 152mA 82% ±1.5% ±2.5% DR24D12/125G
18-36VDC ±15VDC ±100mA 152mA 82% ±1.5% ±2.5% DR24D15/100G
36-72VDC 5VDC 500mA 66mA 79% ±1.5% ±2.5% DR48S05/500G
36-72VDC 12VDC 250mA 81mA 78% ±1.5% ±2.5% DR48S12/250G
36-72VDC ±5VDC ±250mA 65mA 80% ±1.5% ±2.5% DR48D05/250G
36-72VDC ±12VDC ±125mA 75mA 83% ±1.5% ±2.5% DR48D12/125G
Notes
1 Nominal input voltages are 24VDC and 48VDC.
2 Maximum figure, at full load.
3 Maximum.
4 Low line to high line.
5 Full load to 0.25% full load; dual outputs loaded equally.
6 Standard specifications are conservative and can be optimised for specific
applications. In particular, converter start-up at lower than specified
temperature, wider input voltage range and output voltage adjustment are
all relatively simple modifications to the standard product. Consult factory
for details.
7 Fixed frequency design provides for easier input filtering and better noise
performance.
0.02
(0.5)
0.50
(12.7)
0.12
(3.0)
MIN
0.02 DIA
(0.5)
0.18
(4.6)
1.25
(31.8)
0.700
(17.8) 0.100
(2.5)
0.03
(0.8)
0.600
(15.2)
0.80
(20.3)
23
22 2
3
16
15 (NC)
14
9
11
(NC) 10
BOTTOM
VIEW
ALL DIMENSIONS IN INCHES (mm)
DOT ON TOP
REFERENCES
PIN 1
CASE G
Tolerance .xx = ±0.02
.xxx = ±0.005
PIN CONNECTIONS
SINGLE DUAL
OUTPUT OUTPUT FUNCTION
Pins 22 and 23 Pins 22 and 23 + Input
Pins 2 and 3 Pins 2 and 3 - Input
Pin 14 Pin 14 + Output
No Connection Pins 9 and 16 Common
Pin 16 Pin 11 – Output
3 Watt
Wide input DC/DC converters
DC/DC CONVERTERS |
3W DC
PAGE 2
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