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Mean Well LDDS-500HW DC/DC LED Driver CC 500mA - Step-down Wire Type

Name: Mean Well LDDS-500HW DC/DC LED Driver CC 500mA - Step-down Wire Type
Brand: Mean Well
SKU: LDDS-500HW
Price: 9.21 USD
Availability: InStock

constant currentstep downhigh efficiency up to 97%IP67wire style

SKU LDDS-500HW

$9.21 USD

Shipping calculated at checkout.

Available to order

Overview

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

LDDS-500HWSpecifications from the official datasheet (2026-08-20 edition)

OUTPUT

CURRENT RANGE: 500mA
VOLTAGE RANGE^Note.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 load^Note.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

LDDS-500HW Derating Curve — Derating Curve

LDDS-500HW Standard Application(LDDS-HW series)(Remote — Standard Application(LDDS-HW series)(Remote

LDDS-500HW Efficiency VS Output Voltage(Number — Efficiency VS Output Voltage(Number

LDDS-500HW Pin Configuration — Pin Configuration

Typical applications

Downloads

Datasheet1

LDDS-500HW datasheetLDDS-H-SPEC.PDF · 2026-08-20 edition PDF Download

Certificates3

Mean Well LDDS-H EMC Certificate PDF Download

Mean Well LDDS-xxxHWx-CE-dec Certificate PDF Download

Mean Well LDDS-xxxHWx-UK-dec Certificate PDF Download

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.

Payment & Security

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