LDF24E Datasheet, PDF (1/2 Pages) MicroPower Direct, LLC – LDF24E-XX-XXX SERIES

LDF24E-xx-xxx Series
Miniature, SMT
Constant Current Output
DC/DC LED Drivers
Electrical Specifications
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Key Features:
Input
Parameter
• 300 - 700 mA Output Current Input Voltage Range
Conditions
Min. Typ. Max.
5.5 24.0 48.0
Units
VDC
• Constant Current Output
• Miniature SMTCase
Max Input Voltage
Input Filter
Output
See Note 1
Internal Capacitor
55.0
VDC
• PWM & Analog Dimming ^Parameter
Output Current Accuracy
• Wide 5.5V to 48V Input Range _{Output Current Stability}
Conditions
Min. Typ. Max.
Vin = 24V
±2.0 ±3.0
Vin = 48V
±1.0
Units
%
%
• Efficiency to 96%
• 2.0 MHrs MTBF
Output Capacitive Load
Ripple & Noise
Temperature Coefficient
1,000
120
±0.015
µF
mV P-P
%/ºC
• Low, Low Cost!
Output Short Circuit
Continuous
Environmental
Parameter
Conditions
Min. Typ. Max. Units
Operating Temperature Range, Ambient
300 mA, 350 mA Output Models -40 +25 +85
All Other Models -40 +25 +71
ºC
Operating Temperature Range, Case
Case
+100
ºC
Storage Temperature Range
-55
+125
ºC
Cooling
Free Air Convection
Humidity
RH, Non-condensing
95
%
Lead Temperature
1.5 mm From Case For 10 Sec
260
ºC
Physical
Case Size
0.94 x 0.54 x 0.295 Inches (23.86 x 13.70 x 7.50 mm)
Case Material
Non-Conductive Black Plastic (UL94-V0)
Weight
0.212 Oz (6.0g)
Remote On/Off Control
Parameter
Conditions
Min. Typ. Max. Units
DC/DC On
Open Or 2.8 VDC < 6.0 VDC
DC/DC Off
<0.6 VDC
Remote Pin Drive Current
Vcont = 5.0 VDC
1
mA
Quiescent Input Current (Shutdown Mode)
Vin = 24V, Vcont = <0.6 VDC
400
µA
PWM Dimming
Parameter
Conditions
Min. Typ. Max. Units
Operation Frequency
0.2
10
kHz
Reliability Specifications
Parameter
Conditions
Min. Typ. Max. Units
MTBF
MIL HDBK 217F, 25ºC, Gnd Benign 2.0
MHours
Typical Connection: DC Input
Connection Notes:
1. Input filter components (C1, L1 & C2) are
used to help meet the conducted emissions
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
requirements (EN 55022 B) for the unit.
Recommended values are:
C2 - 2.2 µF
L1 - 1.25 mH
C3 - 1.0 µF
Other components added to the circuit
include an input storage capacitor to help
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Typical Connection: AC Input
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prevent problems due to input line sags and
an output capacitor to improve performance.
Recommended values are:
C1 - 470 µF
C4 - 1.0 µF
2. To comply with EN61000-4-5, a TVS should
be installed before the input filter compo-
nents. A SMCG51 is recommended.
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