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

Name: Mean Well LDH-45A-700WDA DC/DC LED Driver CC 700mA - Step-up
Brand: Mean Well
SKU: LDH-45A-700WDA
Price: 21.61 USD
Availability: InStock

constant currentstep uphigh efficiency up to 95%wire style

SKU LDH-45A-700WDA

$21.61 USD

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Available to order

Overview

LDH-45A-700WDA is the model of this series: rated current 700mA, rated power 44.8W, 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-700WDASpecifications from the official datasheet (2024-10-16 edition)

OUTPUT

RATED CURRENT: 700mA
CURRENT ACCURACY(Typ.): ±5% at 12VDC input
VOLTAGE RANGE Non-DALI^Note.2: 12~64VDC
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

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.): 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)

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-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

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

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

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