EJR Series
Rev E
Single & Dual Outputs
10 Watt DC/DC Converter
2:1 Wide Input Voltage Range
“Economy” Version of JR Series
FEATURES
●
Basic Isolation
●
RoHS Compliant
●
Typical Efficiency: 81%
●
Single and Dual Outputs
●
2:1 Wide Input Voltage Range
●
Economy Version of JR Series
●
No Minimum Load Requirement
●
Remote Control (48V Models Only)
●
Trim Function (Single Outputs Only)
●
Industry Standard Footprint: 2” x 1” x 0.4”
●
Approved to IEC/EN60950, UL60950 Safety Standards
●
Over Current & Short Circuit Protection (48V Single Output Models Only)
SPECIFICATIONS:
EJR Series
All specifications apply @ ±25°C ambient unless otherwise noted
For 48V models only
INPUT SPECIFICATIONS
Input Voltage Range ...........12V nominal input............. 9 - 18VDC
24V nominal input........... 18 - 38VDC
48V nominal input........... 36 - 75VDC
Remote Control
(for 48V input models only)
(Positive Logic) ..............High = on ..................... 3.5 to 10VDC
Low = off.................... -0.7 to 0.8VDC
(Negative Logic).............Low = on.................... -0.7 to 0.8VDC
High = off ..................... 3.5 to 10VDC
Remote Control Current......................... 2mA max. (positive logic)
4mA max. (negative logic)
PROTECTION
(3.3V & 5V single output, 48V input models)
Over Current Protection (3.3V, 5V)..........> 120% Io, auto-recovery
Short Circuit Protection (3.3V, 5V).........Continuous, auto-recovery
GENERAL SPECIFICATIONS
Efficiency .......................................................................... see table
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature .......................... -40°C to +55°C (ambient)
Storage Temperature ............................................ -55°C to+125°C
Operating Case Temperature ............................... -40°C to +100°C
Temperature Coefficient .............................................. <±0.02%/°C
MTBF...................................................................>2,000,000 hours
OUTPUT SPECIFICATIONS
Output Current ................................................................ see table
Output Voltage................................................................ see table
Voltage Adjustability (single outputs only)........... 90% to 110% Vo
Voltage Setpoint Accuracy.....................................±1.0% Vo max.
Line Regulation......................................................±0.2% Vo max.
Load Regulation.......................................................0.5% Vo max.
Maximum Power .................................................................... 10W
Ripple/Noise .........................< 50mVp-p max. (12V & 24V inputs)
< 50mVp-p max. (48V input, dual output)
< 100mVp-p max. (48V input, single output)
Transient Response...................................................200mV max.
Recovery < 200µs max.
(25% load step change from 50% Io)
di/dt: 1A/10µs
PHYSICAL SPECIFICATIONS
Dimensions............................. 50.80(L) x 25.40(W) x 10.16(H) mm
2.0(L) x 1.0(W) x 0.4(H) inches
Weight ....................................................................................23.3g
SAFETY
Safety Standards ...................................... IEC/EN60950, UL60950
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
EJR Series
Rev E
Single & Dual Outputs
10 Watt DC/DC Converter
2:1 Wide Input Voltage Range
“Economy” Version of JR Series
OUTPUT VOLTAGE / CURRENT RATING CHARTS
Model
EJR12S3.3-3000
EJR12S5-2000
EJR12S12-830
EJR12S15-670
EJR24S3.3-3000
EJR24S5-2000
EJR24S12-830
EJR24S15-670
EJR48S3.3-3000
EJR48S5-2000
EJR48S12-830
EJR48S15-670
Input Voltage
12 VDC
(9 – 18 VDC)
24 VDC
(18 – 38 VDC)
48 VDC
(36 – 75 VDC)
SINGLE OUTPUT MODELS
Output Voltage
Output Current
3.3 VDC
3000mA
5 VDC
2000mA
12 VDC
830mA
15 VDC
670mA
3.3 VDC
3000mA
5 VDC
2000mA
12 VDC
830mA
15 VDC
670mA
3.3 VDC
3000mA
5 VDC
2000mA
12 VDC
830mA
15 VDC
670mA
DUAL OUTPUT MODELS
Output Voltage
±5 VDC
±12 VDC
±15 VDC
±5 VDC
±12 VDC
±15 VDC
±5 VDC
±12 VDC
±15 VDC
Efficiency
76%
81%
82%
83%
76%
81%
82%
83%
77%
81%
83%
84%
Technical Datasheet
View PDF
View PDF
View PDF
View PDF
Model
EJR12D5-1000
EJR12D12-420
EJR12D15-330
EJR24D5-1000
EJR24D12-420
EJR24D15-330
EJR48D5-1000
EJR48D12-420
EJR48D15-330
Input Voltage
12 VDC
(9 – 18 VDC)
24 VDC
(18 – 38 VDC)
48 VDC
(36 – 75 VDC)
Output Current
±1000mA
±420mA
±330mA
±1000mA
±420mA
±330mA
±1000mA
±420mA
±330mA
Efficiency
80%
83%
84%
80%
83%
84%
81%
83%
84%
NOTES
1. To order models with Trim function add the suffix “-T” to the part number. This option is only available for single output models.
2. Remote Control is only available for 48V nominal input models.
3. For 48V nominal input models without the Remote ON/OFF pin add the suffix “-1” to the end of the part number.
4. Over Current and Short Circuit Protection are only available for the 3.3V single output and the 5V single output, 48V nominal input models.
DERATING CURVES
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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