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Mean Well LDDS-500HW DC/DC LED Driver CC 500mA - Step-down Wire Type
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LDDS-500HW is the model of this series: typical efficiency 95%. Type Blank: Remote ON/OFF control.
LDDS-H series is a 45W DC/DC LED driver featuring constant current output. LDDS-H operates from 12~56VDC and offers models with different rated current ranging between 250mA and 1000mA. With the high efficiency up to 96%, The 94V-0 flame retardant plastic case with fully-potted to enhance the heat dissipation allows this series to fit for class Ⅲ commercial track light or DC bus lighting application.
Features
- DC/DC step-down converter
- Constant current output: 250mA to 1000mA
- Wide input voltage: 12 ~ 56VDC(48V typ.)
- Wide output LED forward string voltage: 2 ~ 45VDC
- High efficiency up to 96%
- Built-in EMI filter, comply with BS EN/EN55015
- Remote ON/OFF control.
- Protections: Short circuit / Over temperature / Over current
- Cooling by free air convection
- Compact size and Fully encapsulated
- Suitable for driving illumination LED
- 5 years warranty
Specifications
OUTPUT
- CURRENT RANGE
- 500mA
- VOLTAGE RANGENote.4
- 2 ~ 45VDC
- CURRENT ACCURACY (Typ.)
- ±5% at 48VDC input (or 24VDC)
- RIPPLE & NOISE(max.)Note.2
- 350mVp-p
- SWITCHING FREQENCY
- 40KHz ~ 1000KHz
- EXTERNAL CAPACITANCE LOAD (max.)
- 2.2uF
INPUT
- VOLTAGE RANGE
- 12 ~ 56VDC
- EFFICIENCY (Typ.)Note.3
- 95%
- DC CURRENT Full loadNote.3
- 400mA
- DC CURRENT No load
- 6mA
- FILTER
- Capacitor
REMOTE ON/OFF & 3 IN 1 DIMMING
- REMOTE ON/OFF
- Leave open if not use Power ON with dimming: DIM ~ -Vin >2.5 ~ 15VDC or open circuit Power OFF : DIM ~ -Vin < 0.3VDC or short
PROTECTION
- SHORT CIRCUIT
- Regulated at rated output current Protection type: Can be continued, recovers automatically after fault condition is removed
- OVER TEMPERATURE
- Tj 150℃ typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down
ENVIRONMENT
- WORKING TEMP.
- -40 ~ + 55℃(Refer to derating curve) @ full load
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
- OPERATING CASE TEMP. (max.)
- 90℃
SAFETY & EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 approved
- EMC EMISSION
- Compliance to BS EN/EN55015, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, light industry level, criteria A, EAC TP TC 020
OTHERS
- MTBF
- 650Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 47*12*7mm or 1.85"*0.47"*0.28" inch (L*W*H)
- PACKING
- LDDS-HW: 9.5g, 36pcs/box, 0.43kg/box. 12 box per carton/6kg LDDS-HWB: 9.4g, 36pcs/box, 0.43kg/box. 12 box per carton/6kg
- POTTING MATERIAL
- Expoxy(UL94-V0)
MODEL ENCODING
- Blank (this model)
- Remote ON/OFF control
- B
- 3 in 1 Dimming function
Test conditions and notes5
- 1.All parameters are specified at normal input(48VDC), rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf capacitor.
- 3.Test condition: 48VDC input, 36VDC output without Dimming.
- 4.Output voltage will always step down 4 volts from input DC voltage.
- 5.The output of LDDS-H should not be connected to the input of the same unit or output from other sources.
Technical drawings
Typical applications
- DC battery source lighting
- Portable lighting
- Commercial lighting
- DC 48V Track lighting
- DC 24V landscape lighting
- For STUCCHI track adapters
- For class Ⅲ application(SELV)
Downloads
FAQ
Can I use the LDDS-500HW for a 500mA LED downlight?
Yes, if the fixture is designed for 500mA constant current input. This driver is a constant current step-down model with a 2-45V output range, so it should be paired with a load that needs controlled current rather than fixed voltage.
Is the LDDS-500HW suitable for constant current signage modules?
It can be suitable for signage modules that are specified for 500mA constant current operation. It is not intended for constant voltage LED modules, because this model regulates current across a 2-45V range instead of providing a fixed voltage output.
Can this driver run a higher-current small LED array?
Yes, it is a better match for small LED arrays that need 500mA constant current rather than 350mA or 700mA. The step-down design makes it appropriate when the source (12-56VDC) and LED load (2-45V) both stay within the unit's specified electrical range.
How many LEDs can the LDDS-500HW drive?
That depends on the forward voltage of each LED, because this driver operates over a 2-45V output range. There is no single LED count for the LDDS-500HW; the correct check is whether the LED string stays within that voltage window at 500mA constant current.
How does the LDDS-500HW compare with the other wire-style LDDS versions?
The series spans LDDS-250HW and LDDS-250HWB at 250mA, LDDS-300HW and LDDS-300HWB at 300mA, LDDS-350HW and LDDS-350HWB at 350mA, LDDS-500HWB matching this unit at 500mA, LDDS-700HW and LDDS-700HWB at 700mA, and LDDS-1000HW and LDDS-1000HWB at 1000mA. All of them share the same 2-45V output range; HW versions use remote ON/OFF, HWB versions add 3 in 1 dimming.
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