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Emerson - DC-DC / Industry Standard Isolated Eighth Brick

Numéro de référence LES25A48-1V5RANJ
Description DC-DC / Industry Standard Isolated Eighth Brick
Fabricant Emerson 
Logo Emerson 





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LES25A48-1V5RANJ fiche technique
Eighth-Brick Series
Single output
DC/DC CONVERTERS High Current, High Efficiency, Low Profile
Ultra-high efficiency topology
Industry standard eighth brick footprint (identical to quarter-brick pinout)
Low profile through-hole version
Low profile with 38% space savings over other quarter-brick brick converters
Wide ambient temperature range, -40 ºC to +85 ºC
80% to 110% output trim
Monotonic start-up in normal and prebiased loads
Basic insulation system
Overvoltage and overtemperature protection
Secondary side control, no optocouplers,
fast transient response
100 V, 100 ms input voltage transient rated
Available RoHS compliant
This is a new high efficiency, open-frame, low profile, single board, isolated dc-dc
converter series in an industry standard eight-brick footprint that provides up to 100 W of
output power. The series delivers very high output current at low voltages, and excellent
useable power for today’s high performance applications. The series features an input
voltage range of 18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc and is available with output voltages of
1.2 V, 1.5 V 1.8 V, 2.5 V, 3.3 V and 5.0 V. The output voltage is adjustable from 80% to 110% of
the nominal value. The series also has a remote ON/OFF capability. Overcurrent, overvoltage and
overtemperature protection features are included as standard. Full international safety approval
including EN60950-1 VDE and UL/cUL60950, reduces compliance costs and time to market.
All specifications are typical at nominal input, full load at 25 °C ambient unless otherwise stated
1
NEW Product
Patent No. 6,765,810
Other Patents Pending
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
80% to 110%
Minimum load
0%
Overshoot
At turn-on and turn-off
None
Undershoot
None
Transient response
(See Note 1)
60 mV to 150 mV typ. deviation
20 µs recovery
INPUT SPECIFICATIONS
Input voltage range
24 V nominal
48 V nominal
18-36 Vdc
36-75 Vdc
Input current
No load
Remote OFF
50 mA
5 mA
Active high remote ON/OFF
Logic compatibility
ON
OFF
Open collector ref to -input
Open circuit or >2.4 Vdc
<0.4 Vdc
Undervoltage Lockout
24 Vin
48 Vin
Power up
Power down
Power up
Power down
17.5 V (typ.)
16.5 V (typ.)
35.5 V (typ.)
33.5 V (typ.)
48 Vin Start-up time
(See Note 2)
Power up
Remote ON/OFF
15 ms (typ.)
15 ms (typ.)
EMC CHARACTERISTICS
Immunity:
ESD air enclosure
Radiated field enclosure
Conducted
Input transients
EN61000-4-2 8 kV/6 kV(O/P within spec.)
EN61000-4-3 10 V/m (O/P within spec.)
EN61000-4-6 10 V (O/P within spec.)
100 V, 100 ms
GENERAL SPECIFICATIONS
Basic insulation
Input/output
2250 Vdc
Switching frequency
Fixed
480 kHz
Approvals and
standards
(See Note 3)
EN60950-1 VDE
UL/cUL 60950
Material flammability
UL94V-0
Weight
21 g (0.73 oz)
MTBF
Telcordia Tech SR-332 4,034,120 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient.
temperature
Non-operating
-40 °C to +85 °C
-55 °C to +125 °C
PROTECTION
Shortcircuit
Overvoltage
Thermal
Continuous
Non-latching
125 ºC hot spot temperature with
automatic recovery
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E135734/60950
VDE Certificate No. 40005017. File No. 10401-3336-0197
CB Report and Certificate to IEC60950, Certificate No. DE1-31103
File Name: eighth_brick.pdf Rev (07): 16 Nov 2005

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