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Mean Well LDDS-1000HW DC/DC LED Driver CC 1000mA - Step-down Wire Type

constant currentstep downhigh efficiency up to 97%IP67wire style

SKU LDDS-1000HW

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Overview

LDDS-1000HW is the model of this series: typical efficiency 96%. 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-1000HWSpecifications from the official datasheet (2026-08-20 edition)

OUTPUT

CURRENT RANGE: 1000mA
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: 96%
DC CURRENT Full load^Note.3: 820mA
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-1000HW Derating Curve — Derating Curve

LDDS-1000HW Standard Application(LDDS-HW series)(Remote — Standard Application(LDDS-HW series)(Remote

LDDS-1000HW Efficiency VS Output Voltage(Number — Efficiency VS Output Voltage(Number

LDDS-1000HW Pin Configuration — Pin Configuration

Typical applications

Downloads

Datasheet1

LDDS-1000HW 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-1000HW for LED downlights that need constant current?

Yes, this model is specified as a constant current step-down LED driver. It delivers 1000mA over a listed output voltage range of 2-45V. It is intended for LED loads designed for constant current operation rather than constant voltage operation.

Is the LDDS-1000HW suitable for signage modules or compact LED light engines?

It can be used for signage modules or compact LED light engines when the load is designed for constant current operation and fits the listed 2-45V range. The output current is 1000mA, and the product is described as a step-down wire type driver. Constant voltage LED modules should use a constant voltage driver instead.

Can this model run a small LED array in a slim enclosure?

Yes, its dimensions are 47 × 12 × 7 mm and its weight is 9.5 g, so it is built for compact installations. The driver delivers 1000mA constant current. It suits small LED arrays when their electrical requirements match the 2-45V output range.

Is the LDDS-1000HW suitable for demanding ambient temperatures?

The specified operating temperature range is -40°C to +55°C at full load, with derating above that per the datasheet curve. That supports use in cold environments and in applications that stay within the +55°C full-load limit. The maximum operating case temperature is 90°C.

How do I check LED compatibility with the LDDS-1000HW?

Match it to LEDs that are designed for constant current operation and confirm that the total LED forward voltage stays within the listed 2-45V output range. The number of LEDs depends on each LED's forward voltage, so a fixed LED count should not be assumed. If the LED load expects constant voltage instead of constant current, use a different driver type.

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Model	Power	Voltage	Current	IP Rating
Mean Well LDDS-700HWB DC/DC LED Driver CC 700mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	0.7A	IP20	View
Mean Well LDDS-700HW DC/DC LED Driver CC 700mA - Step-down Wire Type	45W	45V	0.7A	IP20	View
Mean Well LDDS-500HWB DC/DC LED Driver CC 500mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	0.5A	IP20	View
Mean Well LDDS-500HW DC/DC LED Driver CC 500mA - Step-down Wire Type	45W	45V	0.5A	IP20	View
Mean Well LDDS-350HWB DC/DC LED Driver CC 350mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	0.35A	IP20	View
Mean Well LDDS-350HW DC/DC LED Driver CC 350mA - Step-down Wire Type	45W	45V	0.35A	IP20	View
Mean Well LDDS-300HWB DC/DC LED Driver CC 300mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	0.3A	IP20	View
Mean Well LDDS-300HW DC/DC LED Driver CC 300mA - Step-down Wire Type	45W	45V	0.3A	IP20	View
Mean Well LDDS-250HWB DC/DC LED Driver CC 250mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	0.25A	IP20	View
Mean Well LDDS-250HW DC/DC LED Driver CC 250mA - Step-down Wire Type	45W	45V	0.25A	IP20	View
Mean Well LDDS-1000HWB DC/DC LED Driver CC 1000mA - Step-down Wire Type - 3 in 1 Dimmable	45W	45V	1A	IP20	View

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