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Mean Well LDH-45A-700WDA DC/DC LED Driver CC 700mA - Step-up

constant currentstep uphigh efficiency up to 95%wire style

SKU LDH-45A-700WDA

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Overview

LDH-45A-700WDA is the model of this series: rated current 700mA, rated power 44.8W, typical efficiency 90%. Type WDA: Wire style, DALI dimming.

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%
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-700WDASpecifications from the official datasheet (2024-10-16 edition)

OUTPUT

RATED CURRENT: 700mA
CURRENT ACCURACY(Typ.): ±5% at 12VDC input
VOLTAGE RANGE DALI^Note.2: 24~64VDC
NO LOAD OUTPUT VOLTAGE(max.): 75V
RATED POWER: 44.8W
RIPPLE & NOISE (max.)^Note.3: 1.9Vp-p

INPUT

RATED VOLTAGE: 12VDC
VOLTAGE RANGE^Note.2: 9~18VDC
EFFICIENCY (max.): 90%
DC CURRENT (Typ.): 4.2A

ANALOG DIMMING & ON/OFF CONTROL

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

PROTECTION

SHORT CIRCUIT: Protection type : Power OFF and fuse open
OVER VOLTAGE (max.): 75V 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)

MODEL ENCODING

A: 9~18VDC input range
B: 18~32VDC input range
Blank: PIN style, PWM+analog dimming
W: Wire style, PWM+analog dimming
DA: PIN style, DALI dimming
WDA (this model): Wire style, DALI dimming

Test conditions and notes3

1. All parameters are specified at normal input(12VDC,24VDC), rated load, 25℃ 70% RH ambient.
2. 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-700WDA Mechanical Specification — Mechanical Specification

LDH-45A-700WDA Standard Application — Standard Application

LDH-45A-700WDA Efficiency VS Output Voltage(Number — Efficiency VS Output Voltage(Number

LDH-45A-700WDA Application Notes of EMC — Application Notes of EMC

Downloads

Datasheet1

LDH-45A-700WDA datasheetLDH-45-spec.pdf · 2024-10-16 edition PDF Download

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-700 Test Report PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can the LDH-45A-700WDA be used for 700mA LED downlights with a longer series string?

Yes, as long as the downlight is a constant current 700mA load and its total forward voltage stays within 24-64V. The driver is rated for 44.8W and is designed for step-up constant current operation.

Is this model suitable for constant current signage modules in outdoor signs?

It can be suitable when the signage modules are designed for 700mA constant current drive. The datasheet gives no IP or waterproof rating, so in outdoor signs the driver must be protected from water, and the electrical load must stay within the 24-64V constant current range and 44.8W rating.

Can I use this driver for a compact LED array exposed to heat, cold, or moisture?

Heat and cold within -40°C to +70°C (refer to the derating curve), yes; for moisture, no IP or waterproof rating is listed and humidity is rated 20-90% RH non-condensing. The LED array must still be a 700mA constant current load whose total forward voltage remains between 24V and 64V.

Will this work with my LED board, and does it support a fixed number of LEDs?

This driver outputs 700mA constant current across a 24-64V range, so compatibility depends on the board's required current and total forward voltage. The number of LEDs is not fixed because it depends on each LED's forward voltage, and this unit should not be treated like a constant voltage supply.

What environmental conditions is the LDH-45A-700WDA designed to handle?

The operating temperature range is -40°C to +70°C (refer to the derating curve), with 20-90% RH non-condensing humidity and 10-500Hz, 2G vibration along the X, Y and Z axes. No IP or waterproof rating is listed, so water and dust protection must come from the fixture.

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Model	Power	Voltage	Current	IP Rating
Mean Well LDH-45A-700W DC/DC LED Driver CC 700mA - Step-up	44.8W	64V	0.7A	IP67	View
Mean Well LDH-45A-700DA DC/DC LED Driver CC 700mA - Step-up	44.8W	64V	0.7A	IP67	View
Mean Well LDH-45A-700 DC/DC LED Driver CC 700mA - Step-up	44.8W	64V	0.7A	IP67	View
Mean Well LDH-45A-500WDA DC/DC LED Driver CC 500mA - Step-up	43W	86V	0.5A	IP67	View
Mean Well LDH-45A-500W DC/DC LED Driver CC 500mA - Step-up	43W	86V	0.5A	IP67	View
Mean Well LDH-45A-500DA DC/DC LED Driver CC 500mA - Step-up	43W	86V	0.5A	IP67	View
Mean Well LDH-45A-500 DC/DC LED Driver CC 500mA - Step-up	43W	86V	0.5A	IP67	View
Mean Well LDH-45A-350WDA DC/DC LED Driver CC 350mA - Step-up	30.1W	86V	0.35A	IP67	View
Mean Well LDH-45A-350W DC/DC LED Driver CC 350mA - Step-up	30.1W	86V	0.35A	IP67	View
Mean Well LDH-45A-350DA DC/DC LED Driver CC 350mA - Step-up	30.1W	86V	0.35A	IP67	View
Mean Well LDH-45A-350 DC/DC LED Driver CC 350mA - Step-up	30.1W	86V	0.35A	IP67	View
Mean Well LDH-45A-1050WDA DC/DC LED Driver CC 1050mA - Step-up	45.15W	43V	1.05A	IP67	View
Mean Well LDH-45A-1050W DC/DC LED Driver CC 1050mA - Step-up	45.15W	43V	1.05A	IP67	View
Mean Well LDH-45A-1050DA DC/DC LED Driver CC 1050mA - Step-up	45.15W	43V	1.05A	IP67	View
Mean Well LDH-45A-1050 DC/DC LED Driver CC 1050mA - Step-up	45.15W	43V	1.05A	IP67	View

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Mean Well LDH-45A-700WDA DC/DC LED Driver CC 700mA - Step-up

Overview

Features

Specifications

OUTPUT

INPUT

ANALOG DIMMING & ON/OFF CONTROL

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

MODEL ENCODING

Technical drawings

Downloads

Datasheet1

Certificates3

Test reports1

Catalogues1

FAQ

Payment & Security

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Mean Well LDH-45A-700WDA DC/DC LED Driver CC 700mA - Step-up

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