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부품번호 | LD48-14-250W 기능 |
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기능 | Wired Constant Current DC/DC LED Drivers | ||
제조업체 | MicroPower Direct | ||
로고 | |||
LD48-xx-xxW
Compact, Wired
Constant Current
DC/DC LED Drivers
Electrical Specifications
Key Features:
• Constant Current Output
• Wide 7V to 60V Input Range
• Efficiency to 97%
• Miniature MiniDIP Case
• IP67 Rated
• Meets EN 60950
• 950 kHrs MTBF
• Digital & Analog Dimming!
Board Mount
Models
Available
IP67
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
T: (781) 344-8226
F: (781) 344-8481
W: www.micropowerdirect.com
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Input
Parameter
Conditions
Min. Typ. Max. Units
Input Voltage Range
7.0 60.0 VDC
Max Input Voltage
0.5 Sec. Max
65.0 VDC
Input Filter
Internal Capacitor
Output
Parameter
Conditions
Min. Typ. Max. Units
Output Voltage Range
VIN = 60V 2
57 VDC
Output Current
See Model Selection Guide
Output Current Accuracy
See Model Selection Guide
Output Power
See Model Selection Guide
Efficiency
See Model Selection Guide
Capacitive Load
470 µF
Operating Frequency
20 500 kHz
Ripple & Noise (20 MHz)
See Model Selection Guide
Temperature Coefficient
±0.03 %/ºC
Thermal Impedance
Natural Convection
+30 ºC/W
Output Short Circuit
Regulated At Rated Output Current
Environmental
Parameter
Conditions
Min. Typ. Max. Units
Operating Temperature Range
Storage Temperature Range
www.DataSheet.net/
Ambient
Case
-40
-40
+25 +85
+110
+125
ºC
ºC
Cooling
Free Air Convection
Humidity
RH, Non-condensing
95 %
Lead Temperature (Solder)
1.5 mm From Case For 10 Sec
260 ºC
Physical
Case Size
1.25 x 0.80 x 0.49 Inches (31.75 x 20.32 x 12.45 mm)
Case Material
Non-Conductive Black Plastic (UL94-V0)
Weight
0.622 Oz (17.7g)
Remote On/Off Control
Parameter
Conditions
Min. Typ. Max. Units
DC/DC On
Open or 0.3V < VADJ <1.25V
DC/DC Off
VADJ <0.15V
Remote Pin Drive Current
VADJ = 1.25V
1 mA
Quiescent Input Current (Shutdown Mode)
VIN = 60V
100 µA
PWM Dimming
Parameter
Conditions
Min. Typ. Max. Units
Operation Frequency
Recommended Maximum
1.0 kHz
Switch On Time
200 nS
Switch Off Time
200 nS
Analog Dimming
Parameter
Conditions
Min. Typ. Max. Units
Input Voltage Range
At VADJ Input (Pin 4) 0.3
1.25 VDC
Output Current Adjustment
25 100 %
Control Voltage Range Limits
On 0.20
Off 0.15
0.30
0.25
VDC
Drive Current
VADJ = 1.25V
1.0 mA
EMC Compliance
EMI/RFI
Radiated/Conducted
EN 55015 (CISPR22)
Electrostatic Discharge (ESD)
Class A
IEC/EN 61000-4-2, -6, -8
RF Field Susceptibility
Class A
IEC/EN 61000-4-3
Electrical Fast Transients/Bursts On Mains
Class A
IEC/EN 61000-4-4
EMS Immunity
EN61547
Reliability Specifications
Parameter
Conditions
Min. Typ. Max. Units
MTBF
MIL HDBK 217F, 25ºC, Gnd Benign 950
kHours
www.micropowerdirect.com
Datasheet pdf - http://www.DataSheet4U.co.kr/
The output current of the unit can also be set by
adjusting the voltage level on the VADJ input to a
value between 0.3V to 1.25V (IOUT will vary from
25% to 100% of rated output current). Care must
be taken not to exceed 1.25V on this input, or
the driver may be damaged.
A simple analog circuit using two low cost,
switching regulators is shown at left. Work-
ing from inputs that can range from 15 to 32
VDC,the top regulator (SR1) keeps the input to
the LED driver at 12 VDC.
The other regulator (SR2), driven off the same
input line maintains the control voltage (for the
VADJ input) at 5 VDC. The resister network of R1
and R2 can now be used to set the output cur-
rent level of the LED driver. This level is equal to:
VADJ
=
R2
R1 + R2
X VCTRL
In the second circuit, the 5 VDC regulator (SR2)
is replaced by the shunt regulator (D1) circuit
connected in parallel with the resistor network.
The regulator will maintain the voltage across R2
and R3 at 2.5 VDC, insuring that the 1.25 VDC
limit on the VADJ pin will not be exceeded. This
circuit will work for inputs between 7VDC and
approximately 36 VDC. For inputs between 36
VDC and 60 VDC, a zener diode (D2) has been
added.
When using the analog control input, the nominal
output current is equal to:
INOM
= IMAX
x
VADJ
1.25
The VADJ input should be left open if not used.
Grounding VADJ will shut the unit down. Connect-
ing VADJ to directly to +VIN may damage the unit.
www.micropowerdirect.com
Analog Output Current Control
Analog Output Current Control (7 - 36 VDC IN)
Analog Output Current Control (36 - 60 VDC IN)
Mechanical Dimensions
www.DataSheet.net/
Pin Connections
Pin Color LD48-xx-xxxW
1 Black -VIN
-DC Supply
15 White
No Wire
12 Blue -LED LED Cathode Conn.
13 Yellow +LED LED Anode Conn.
24 Red +VIN
+DC Supply
Pin Color LD48-xx-xxxWA
1 Black -VIN
-DC Supply
15 White VADJ PWM, On/Off
12 Blue -LED LED Cathode Conn.
13 Yellow +LED LED Anode Conn.
24 Red +VIN
+DC Supply
MicroPower Direct
We Power Your Success - For Less!
Notes:
• All dimensions are typical in inches (mm)
• Tolerance x.xx = ±0.02 (±0.50)
• Pin 1 is marked by a “dot” or indentation on the top of the unit
292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: [email protected]
Datasheet pdf - http://www.DataSheet4U.co.kr/
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부품번호 | 상세설명 및 기능 | 제조사 |
LD48-14-250W | Wired Constant Current DC/DC LED Drivers | MicroPower Direct |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |