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LDF24E-XX-XXX PDF预览

LDF24E-XX-XXX

更新时间： 2024-11-24 00:46:55
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页数 文件大小 规格书
2页 341K
描述
Miniature, SMT Constant Current Output DC/DC LED Drivers

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LDF24E-XX-XXX 数据手册

 浏览型号LDF24E-XX-XXX的Datasheet PDF文件第2页 
LDF24E-xx-xxxSeries  
Miniature, SMT  
ConstantCurrentOutput  
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.  
Input  
Parameter  
Key Features:  
Conditions  
Conditions  
Min.  
5.5  
Typ.  
24.0  
Max.  
48.0  
55.0  
Units  
VDC  
VDC  
• 300 - 700 mA Output Current  
• Constant Current Output  
• Miniature SMTCase  
• PWM & Analog Dimming  
• Wide 5.5V to 48V Input Range  
• Efficiency to 96%  
Input Voltage Range  
Max Input Voltage  
Input Filter  
Output  
Parameter  
Output Current Accuracy  
Output Current Stability  
Output Capacitive Load  
Ripple & Noise  
Temperature Coefficient  
Output Short Circuit  
Environmental  
See Note 1  
Internal Capacitor  
Min.  
Vin = 24V  
Typ.  
2.0  
Max.  
3.0  
1.0  
1,000  
120  
0.015  
Units  
%
%
µF  
mV P-P  
%/ºC  
Vin = 48V  
• 2.0 MHrs MTBF  
• Low, Low Cost!  
Continuous  
Parameter  
Conditions  
Min.  
-40  
-40  
Typ.  
+25  
+25  
Max.  
+85  
+71  
+100  
+125  
Units  
300 mA, 350 mA Output Models  
All Other Models  
Case  
Operating Temperature Range, Ambient  
ºC  
Operating Temperature Range, Case  
Storage Temperature Range  
Cooling  
Humidity  
Lead Temperature  
Physical  
ºC  
ºC  
-55  
Free Air Convection  
RH, Non-condensing  
1.5 mm From Case For 10 Sec  
95  
260  
%
ºC  
Case Size  
Case Material  
Weight  
0.94 x 0.54 x 0.295 Inches (23.86 x 13.70 x 7.50 mm)  
Non-Conductive Black Plastic (UL94-V0)  
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  
Quiescent Input Current (Shutdown Mode)  
PWM Dimming  
Parameter  
Vcont = 5.0 VDC  
Vin = 24V, Vcont = <0.6 VDC  
1
mA  
µA  
400  
Conditions  
Min.  
Typ.  
Max.  
Units  
Operation Frequency  
Reliability Specifications  
Parameter  
0.2  
10  
kHz  
Conditions  
Min.  
Typ.  
Max.  
Units  
MTBF  
MIL HDBK 217F, 25ºC, Gnd Benign  
2.0  
MHours  
Connection Notes:  
Typical Connection: DC Input  
1. Input filter components (C1, L1 & C2) are  
used to help meet the conducted emissions  
requirements (EN 55022 B) for the unit.  
Recommended values are:  
MicroPower Direct  
292 Page Street  
Suite D  
Stoughton, MA 02072  
USA  
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  
prevent problems due to input line sags and  
an output capacitor to improve performance.  
Recommended values are:  
C1 - 470 µF  
C4 - 1.0 µF  
T: (781) 344-8226  
F: (781) 344-8481  
E: sales@micropowerdirect.com  
W: www.micropowerdirect.com  
Typical Connection: AC Input  
2. To comply with EN61000-4-5, a TVS should  
be installed before the input filter compo-  
nents. A SMCG51 is recommended.  
www.micropowerdirect.com  
12

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