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Mean Well LDH-45A-500WDA DC/DC LED Driver CC 500mA - Step-up

Name: Mean Well LDH-45A-500WDA DC/DC LED Driver CC 500mA - Step-up
Brand: Mean Well
SKU: LDH-45A-500WDA
Price: 19.84 USD
Availability: InStock

constant currentstep uphigh efficiency up to 95%wire style

SKU LDH-45A-500WDA

$19.84 USD

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Available to order

Overview

LDH-45A-500WDA is the model of this series: rated current 500mA, rated power 43W, typical efficiency 90%.

Features

DC/DC step-up converter
Constant current output : 350mA to 1050mA
Wide output LED string voltage up to 126VDC
High efficiency up to 95%
PWM + analog dimming and remote ON/OFF control [(Blank) type or W type]
DALI dimming [(Blank)DA type or WDA type]
Protections: Short circuit / Over voltage / Under voltage
Cooling by free air convection
Fully encapsulated
3 years warranty

Specifications

LDH-45A-500WDASpecifications from the official datasheet (2024-10-16 edition)

OUTPUT

RATED CURRENT: 500mA
CURRENT ACCURACY(Typ.): ±5% at 12VDC input
VOLTAGE RANGE Non-DALI^Note.2: 12~86VDC
VOLTAGE RANGE DALI^Note.2: 24~86VDC
NO LOAD OUTPUT VOLTAGE(max.): 100V
RATED POWER: 43W
RIPPLE & NOISE (max.)^Note.3: 2.5Vp-p

INPUT

RATED VOLTAGE: 12VDC
VOLTAGE RANGE^Note.2: 9~18VDC
EFFICIENCY (max.): 90%
DC CURRENT (Typ.): 4.1A

PWM DIMMING & ON/OFF CONTROL

REMOTE ON/OFF: Leave open if not used Power ON with dimming: PWM signal >2~8VDC or open circuit, between PWM DIM and DIM- Power OFF : PWM signal <0.5VDC or short or PWM duty is equal to 0%, between PWM DIM and DIM-
PWM DIMMING FREQUENCY: 1K~10KHz
QUIESCENT INPUT CURRENT IN SHUTDOWN MODE(Typ.): 7mA when PWM dimming OFF

ANALOG DIMMING & ON/OFF CONTROL

REMOTE ON/OFF: Leave open if not used Power on with dimming: DC input >0.25~8VDC or open circuit, between Analog DIM and DIM- Power off : DC input <0.2VDC or short, between Analog DIM and DIM-
DIM INPUT VOLTAGE RANGE: 0.25~1.3VDC
MAX OPERATION VOLTAGE: 8V; The output current remains constant when voltage changes from 1.3V to 8V
QUIESCENT INPUT CURRENT IN SHUTDOWN MODE(Typ.): 7mA when Analog dimming OFF

PROTECTION

SHORT CIRCUIT: Protection type : Power OFF and fuse open
OVER VOLTAGE (max.): 100V Protection type : Constant output voltage and shut off o/p current, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.: -40 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SOLDERING TEMPERATURE: Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.)

SAFETY & EMC

SAFETY STANDARDS: LVD BS EN/EN61347-1, BS EN/EN61347-2-13,EAC TP TC 004 approved
EMC EMISSION: Compliance to BS EN/EN55015;EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN61547,BS EN/EN61000-4-2,3,4,6,8; light industry level;EAC TP TC 020

OTHERS

MTBF: 12195.2K hrs min. Telcordia SR-332 (Bellcore) ; 1179.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 75*53*22.7mm (L*W*H)
PACKING: 138g;100pcs/14.8Kg/0.83CUFT[(Blank) type or (Blank) DA type],1.04CUFT(W type or WDA type)

Test conditions and notes3

1. All parameters are specified at normal input(12VDC,24VDC), rated load, 25℃ 70% RH ambient.
2. (Blank) type and W type output voltage must step up by 3 Volts from input DC voltage; (Blank)DA type and WDA type output voltage must step up by 12 Volts from input DC voltage.
3. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf parallel capacitor.

Technical drawings

LDH-45A-500WDA Mechanical Specification — Mechanical Specification

LDH-45A-500WDA Standard Application — Standard Application

LDH-45A-500WDA Efficiency VS Output Voltage(Number — Efficiency VS Output Voltage(Number

LDH-45A-500WDA Application Notes of EMC — Application Notes of EMC

Downloads

Certificates3

Mean Well LDH-45-EMC Certificate PDF Download

Mean Well LDH-45(DA)-CE-dec Certificate PDF Download

Mean Well LDH-45(DA)-UK-dec Certificate PDF Download

Test reports1

Mean Well LDH-45A-500 Test Report PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the LDH-45A-500WDA for LED downlights that need 500mA constant current?

Yes, this driver is built for constant current LED loads at 500mA and can regulate across a 24-86V constant current output range. That makes it suitable for LED downlights designed for a 500mA driver, as long as the total LED forward voltage stays within that range and the load stays within 43W.

Is this driver suitable for signage modules or custom channel letters?

It can be a fit for signage modules when the LED assembly is a constant current 500mA load rather than a constant voltage module. The driver is step-up, rated at 43W, and works across a 24-86V constant current range, so compatibility depends on the module's forward voltage requirements.

Can this power a small LED array in an enclosed or outdoor location?

Yes in an enclosed location; outdoors the enclosure must keep water out, as the datasheet gives no IP or waterproof rating. The operating temperature range is -40°C to +70°C (refer to the derating curve). It is intended for constant current LED arrays at 500mA, with output regulated within 24-86V and up to 43W.

Will this work with my LED board, and how many LEDs can it run?

This is a constant current driver with a 24-86V output range at 500mA, so it should be matched to LED boards designed for 500mA constant current operation. The number of LEDs depends on each LED's forward voltage, so the total forward voltage of the array must remain within 24-86V rather than being judged by LED count alone.

What is the difference between the LDH-45A 500mA versions?

Within the 500mA LDH-45A group, LDH-45A-500 and LDH-45A-500W are 43W models with a 12-86V constant current range, while LDH-45A-500DA and LDH-45A-500WDA are 43W models with a 24-86V constant current range. The W versions are wire style, and the non-W versions are pin style.

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Mean Well LDH-45A-500WDA DC/DC LED Driver CC 500mA - Step-up

Overview

Features

Specifications

OUTPUT

INPUT

PWM DIMMING & ON/OFF CONTROL

ANALOG DIMMING & ON/OFF CONTROL

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

Technical drawings

Downloads

Certificates3

Test reports1

Catalogues1

FAQ

Payment & Security

Write a review

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Mean Well LDH-45A-500WDA DC/DC LED Driver CC 500mA - Step-up

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