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Mean Well LDH-45A-700WDA DC/DC LED Driver CC 700mA - Step-up
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
OUTPUT
- RATED CURRENT
- 700mA
- CURRENT ACCURACY(Typ.)
- ±5% at 12VDC input
- VOLTAGE RANGE Non-DALINote.2
- 12~64VDC
- VOLTAGE RANGE DALINote.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 RANGENote.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
Downloads
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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