Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

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

Name: Mean Well LDH-45A-500DA DC/DC LED Driver CC 500mA - Step-up
Brand: Mean Well
SKU: LDH-45A-500DA
Price: 21.61 USD
Availability: InStock

constant currentstep uphigh efficiency up to 95%pin style

SKU LDH-45A-500DA

$21.61 USD

Shipping calculated at checkout.

Available to order

Overview

LDH-45A-500DA 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-500DASpecifications 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-500DA Mechanical Specification — Mechanical Specification

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

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

LDH-45A-500DA 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-500DA for a 500mA LED downlight with a higher-voltage LED string?

Yes, if the downlight is a constant current 500mA load and its total LED forward voltage stays within 24-86V. This model is better suited to higher-voltage strings than lower-voltage constant current loads because its regulated range starts at 24V. The connected load must also stay within 43W.

Is this driver a fit for outdoor signage modules that need 500mA constant current?

It can be a fit for constant current signage modules operating at 500mA with a total forward voltage in the 24-86V range. The -40°C to +70°C operating range (refer to the derating curve) covers wide temperature swings, but no IP or waterproof rating is given, so the sign must protect it from water. It should not be used where the LED product expects fixed-voltage output.

Can the LDH-45A-500DA power a compact LED array that needs a boosted output voltage?

Yes, this is a step-up constant current driver with 500mA output, up to 86V output voltage, and a 24-86V constant current range. It works for small LED arrays that need a higher LED string voltage while staying inside the 43W limit. It is intended for constant current loads, not fixed-voltage LED assemblies.

How should I verify LED compatibility with the LDH-45A-500DA?

Your LED load must require constant current at 500mA, and the total forward voltage of the LED string must fall within 24-86V. The number of LEDs depends on each LED's forward voltage, so compatibility is based on the summed forward voltage rather than a fixed LED quantity. The driver is rated for 43W maximum.

Is the LDH-45A-500DA suitable for wet and temperature-variable locations?

It operates from -40°C to +70°C (refer to the derating curve) at 20-90% RH non-condensing, so it handles variable temperatures, but the datasheet gives no IP or waterproof rating. In wet locations it must be housed so that water and condensation cannot reach it. The housing dimensions are 75.0 × 53.0 × 22.7 mm.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Please log in to write a review.

{ "id":8649407627584, "variants" :[{ "context":"default", "variant_id": 46609976164672, "sku":"LDH-45A-500DA", "inventory_qty" : 0, "customer" :true, "custom_html" :"\u003cdiv class=\"price\"\u003e\n \u003cdiv class=\"price__default\"\u003e\n \u003cstrong class=\"price__current\"\u003e$21.61\u003c\/strong\u003e\n \u003cs class=\"price__was\"\u003e\u003c\/s\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"unit-price relative\" hidden\u003e\u003cspan class=\"visually-hidden\"\u003eUnit price\u003c\/span\u003e\u003cspan class=\"unit-price__price\"\u003e\u003c\/span\u003e\u003cspan class=\"unit-price__separator\"\u003e \/ \u003c\/span\u003e\u003cspan class=\"unit-price__unit\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv class=\"price__no-variant\" hidden\u003e\n \u003cstrong class=\"price__current\"\u003eUnavailable\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Mean Well LDH-45A-500DA 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

Your cart

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

Features

Company Information

Services and Support

Choose options