LDB24-12-250(Wxy)

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www.micropowerdirect.com MicroPower Direct

292 Page Street

Stoughton, MA 02072 USA T: (781) 344-8226 F: (781) 344-8481 E: sales@micropowerdirect.com W: www.micropowerdirect.com Compact, Boost Constant Current DC/DC LED Drivers Input Parameter Conditions Min. Typ. Max. Units Under Voltage Protection, See Note 1 IOUT = 100 mA to 700 mA 6.8 VDCIOUT = 900 mA 14.6 Soft Start Time 50 mS Input Filter Internal Capacitor Output Parameter Conditions Min. Typ. Max. Units Output Voltage Range, See Note 2 IOUT = 100 mA to 700 mA 14 48 VDCIOUT = 900 mA 25 48 Output Current See Model Selection Guide Output Current Accuracy ±5 % Output Power See Model Selection Guide Effi ciency See Model Selection Guide Operating Frequency 370 kHz Ripple & Noise (20 MHz) See Model Selection Guide Temperature Coeffi cient ±0.03 %/ ºC Thermal Impedance Natural Convection +17 ºC/W Over Voltage Protection 52.5 VDC Output Short Circuit Output Current Cut-Off, Auto Recovery Environmental Parameter Conditions Min. Typ. Max. Units Operating Temperature Range See Model Selection Guide Maximum Case Temperature +105 ºC Storage Temperature Range -55 +125 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 See Mechanical Diagram (Page 4) Case Material Non-Conductive Black Plastic (UL94-V0) Lead Wire Ratings (Wired Models) 18 AWG 600V/ 105 ºC

20 AWG 600V/ 105 ºC

Weight W/Pins 1.341 Oz (38.0g) W/Wires 1.553 Oz (44.2g) EMI Characteristics (See Note 10) Parameter Standard Criteria Level Radiated Emissions EN55015 Conducted Emissions EN55015 ESD IEC 61000-4-2 A ±8 kV Air ±4 kV Contact ±4 kV Indirect RS IEC 61000-4-3 A 3V/m EFT IEC 61000-4-4 A ±0.5 kV Surge IEC 61000-4-5 A ±1 kV CS IEC 61000-4-6 A ±3V rms PFM IEC 61000-4-8 A 3A/m Reliability Specifi cations Parameter Conditions Min. Typ. Max. Units MTBF MIL HDBK 217F , 25ºC, Gnd Benign 1.29 MHours Water Resistance (Wired Version) IP67 Key Features:

• Constant Current Output
• Step Up (Boost) Design
• Wide 9V to 36V Input Range
• Up to 48V Output
• Effi ciency to 95%
• Up to 43W Output Power
• -40°C to +85°C Operation
• Available With Wired Leads
• Digital & Analog Dimming! Electrical Specifi cations Specifi cations typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifi cations subject to change without notice. LDB24-XXX

www.micropowerdirect.com MicroPower Direct • 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com Model Number Input Voltage Range (VDC) Output Max. Power (W) Ripple & Noise (mV P-P , Max) Output Capacitive Load (µF, Max) Effi ciency At FL (%)Voltage Current Range (VDC) Max (mA) Min Max Model Selection Guide www.micropower direct.co m www.micropowerdirect.com NOTES: 1. Models with outputs ranging from 100 mA to 700 mA will typically shut off if the input voltage falls below 6.8 VDC. They turn on again when the input rises above 7.6 VDC. The LDB24-43-900 will typically shut off if the input voltage falls below 14.6 VDC. They turn on again when the input rises above 15.6 VDC. 2. These are “step-up” devices. The output must be kept 5.0V higher than the input. Excessive heating could occur if it is not. 3. A reversed power source could damage the unit. 4. No connection should be made between input ground and the output. 5. The driver has an under voltage shutdown feature that can be used to automatically turn the driver off when a preset input voltage level is reached. This could be useful in applications where a battery supplies the input bus voltage. 6. Unless output ripple needs to be reduced for a specifi c application requirement, capacitance should not be added to the output of the driver. Adding output capacitance will delay the start of the unit. 7. Maximum operating temperature is given for ambient, with convection cooling. 8. Exceeding 8V for more than 0.1S on the DIM input may damage the unit. 9. Exceeding the specifi ed maximum output power could cause damage to the unit. 10. The Enable (remote on/off) input, pin 3 should be left open if not used. Specifi cations for the feature are as follows: Remote On/Off Control Parameter Conditions Max. Units DC/DC On Open DC/DC Off 0.0V Remote Pin Drive Current EN = /H113493V 1.5 µA Quiescent Input Current (Shutdown Mode) VIN = 9 to 32V 1.3 mAVIN = 32V to 36V 8.0 Model Number Input Voltage Range (VDC) Operating Temp. Range Min (ºC) Max (ºC) LDB24-05-100 9.0 - 36.0 -40 +85 LDB24-07-150 9.0 - 36.0 -40 +85 LDB24-12-250 18.0 - 36.0 -40 +85 9.0 - 18.0 -40 +80 LDB24-14-300 18.0 - 36.0 -40 +85 9.0 - 18.0 -40 +80 LDB24-16-350 18.0 - 36.0 -40 +85 9.0 - 18.0 -40 +75 LDB24-24-500 18.0 - 36.0 -40 +80 9.0 - 18.0 -40 +70 LDB24-28-600 18.0 - 36.0 -40 +75 9.0 - 18.0 -40 +70 LDB24-33-700 18.0 - 36.0 -40 +75 9.0 - 18.0 -40 +70 LDB24-43-900 20.0 - 30.0 -40 +60 Operating Temperature Range Input EMI/Protection Connection Notes: 1. The input fi lter components (C1, L1, L2, L3, C2 & C3) are used to meet the conducted emissions requirements of EN 55015. Component values may need to be changed slightly depending upon application variables. 2. Filter components should be mounted as close to the unit as possible. Filter Components C1 47 µF/100V L1 14 µH / 4A C2 330 µF / 100V L3 5.6 mH / 5A (Common Mode Choke) C3 330 µF / 100V For wired Models add a “w” to the Model No. (LDB24-28-600W) For wired Models with a Remote O/F add an “R” to the Model No. (LDB24-28-600WR) For wired Models with a Dimming Input add a “D” to the Model No. (LDB24-28-600WD) For Wired Models With Both Options add an “RD” to the Model No. (LDB24-28-600WRD)

MicroPower Direct • 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com www.micropowerdirect.com Analog Dimming Specifi cations Parameter Conditions Min. Typ. Max. Units Absolute Maximum Rating At DIM Input 0.4 5.0 VDC Control Voltage Range ON 0.4 1.7 VDC Output Current Adjustment 0.0 100 % Control Voltage Range Off 0.0 0.30 VDC Drive Current V DIM = 0.40 to 1.7V 1.5 µA Connection Notes: 1. Output current can also be adjusted by using a pulse width modulated (PWM) signal. By varying the signal duty cycle (as shown at right) the on time of the LED is varied. This changes the apparent brightness of the LED, because the human eye will “average” the amount of light in the pulsed output. To avoid visible fl icker, the PWM signal should be greater than 100 Hz (>200 Hz is recommended). 2. The pulse amplitude of the PWM signal should not be set to a level that produces a peak output current level that exceeds the rated operating current of the LED’s being powered. The “V DIM” used for the peak amplitude in the circuit above is the control voltage at the DIM input that will provide the optimum drive current for the LED lamps. This level can be approximated from the graph above right. 3. The DIM input is shown being driven by an open collector transistor. The resistor and diode (D 1, R2) suppress high amplitude spikes that may be caused by the collector- emitter capacitance of the transistor. These could cause errors in the driver output current or erratic operation. The DIM input can also be driven by an open drain source such as a typical microcontroller output. Connection Notes: As shown in the graph (Output Current vs DIM Input Voltage) at right, the output cur- rent of the unit can be set by adjusting the voltage level on the DIM input to a value between 0.4V and 1.7V (I OUT will vary from 0% to 100% of rated output current). Care must be taken not to exceed 5.0V on this input, or the driver may be damaged. In the circuit above, the voltage level at the DIM input is set by a simple resistor network (R R2, and R3). The regulator (Z1) will maintain the voltage across R2 and R3, insuring that the limit on the DIM pin will not be exceeded. The value of R1 is given for a 24V input. Analog Dimming PWM Dimming PWM Dimming Signals Output Current vs DIM Input Voltage PWM Dimming Specifi cations Parameter Conditions Min. Typ. Max. Units Operation Frequency Recommended Maximum 0.10 100 kHz On Control Voltage 0.40 5.0 VDC Off Control Voltage 0.00 0.30 VDC

We Power Your Success - For Less! 292 Page Street Ste D Stoughton, MA 02072 • TEL: (781) 344-8226 • FAX: (781) 344-8481 • E-Mail: sales@micropowerdirect.com www.micropowerdirect.com Mechanical Dimensions, PC Mount Unit Mechanical Dimensions, Wired Unit Notes:

• All dimensions are typical in inches (mm)
• Wires 1, 4, 5, 6 - 22 AWG/600V
• Wires , 2, 3 - 18 AWG/600V
• Tolerance x.xx = ±0.02 (±0.50) Pin Connections Pin Function 1+ V IN +DC Supply

2 DIM PWM/Analog Dimming

3 EN On/Off Control

5 +LED LED Anode Conn. 6 -LED LED Cathode Conn. Wire Connections Wire Function 1 (Red) +V IN +DC Supply 2 (White) DIM PWM/Analog Dimming 3 (Blue) EN On/Off Control 4 (Black) -V IN -DC Supply 5 (Yellow) +LED LED Anode Conn. 6 (Black) -LED LED Cathode Conn. Notes:

• All dimensions are typical in inches (mm)
• Tolerance x.xx = ±0.02 (±0.50)