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Mean Well LDD-700H DC/DC LED Driver CC 700mA - Step-down
Overview
LDD-700H is the model of this series: typical efficiency 97% at full load and 36VDC/48VDC input for LDD-H/HW ; 96% at full load and 36VDC/48VDC input for LDD-HS. Type Blank: Blank : pin style.
Features
- DC/DC step-down converter
- Constant current output: 300mA to 1500mA
- Wide input voltage: 9 ~ 56VDC
- Wide output LED string voltage: 2 ~ 52VDC
- High efficiency up to 97%
- Built-in EMI filter, comply with BS EN/EN55015 and FCC part15 without additional input filter and capacitors
- Built-in PWM and remote ON/OFF control
- Protections: Short circuit / Over temperature
- Cooling by free air convection
- Fully encapsulated with IP67 level for pin and wire style
- Non-potted, optional conformal coating for SMD style (Order No.: LDD- 350-1000 HSC)
- Compact size
- Low cost, high reliability
- Suitable for driving illumination LED
- 3 years warranty
Specifications
OUTPUT
- CURRENT RANGE
- 700mA
- VOLTAGE RANGENote.4
- 2 ~ 52VDC
- CURRENT ACCURACY (Typ.)
- ±3% at 24VDC input ; ±4% at 48VDC input for LDD-H/HW ; ±5% for LDD-HS
- RIPPLE & NOISE(max.)Note.2
- 200mVp-p
- SWITCHING FREQENCY
- 40KHz ~ 1000KHz
- EXTERNAL CAPACITANCE LOAD (max.)
- 2.2uF
INPUT
- VOLTAGE RANGE
- 9 ~ 56VDC
- EFFICIENCY (max.)
- 97% at full load and 36VDC/48VDC input for LDD-H/HW ; 96% at full load and 36VDC/48VDC input for LDD-HS
- DC CURRENT Full loadNote.3
- 650mA
- DC CURRENT No load
- 5mA
- FILTER
- Capacitor
PWM DIMMING & ON/OFF CONTROL
- REMOTE ON/OFF
- Leave open if not use
- REMOTE ON/OFF
- Power ON with dimming: DIM ~ -Vin >2.5 ~ 6VDC or open circuit
- REMOTE ON/OFF
- Power OFF : DIM ~ -Vin < 0.8VDC or short
- PWM FREQUENCY
- 100 ~ 1KHz
- QUIESCENT INPUT CURRENT IN SHUTDOWN MODE(max.)
- 1mA at PWM dimming OFF and 24VDC input
PROTECTION
- SHORT CIRCUIT
- Regulated at rated output current Protection type: Can be continued, recovers automatically after fault condition is removed
- OVER TEMPERATURE
- Tj 150℃ typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down
ENVIRONMENT
- WORKING TEMP.
- -40 ~ + 85℃(Refer to derating curve)
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing for LDD-H/HW ; 20%~85% RH non-condensing for LDD-HS
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
- OPERATING CASE TEMP. (max.)
- 100℃
EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 approved
- EMC EMISSION
- Compliance to BS EN/EN55015, FCC part 15 class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, light industry level, criteria A, EAC TP TC 020
OTHERS
- MTBF
- 1000Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H) for LDD-H/HW ; 31.8*20.3*11.4mm or 1.25"*0.8"*0.45" inch (L*W*H) for LDD-HS
- WEIGHT
- LDD-H:15.6g ; LDD-HW:18g ; LDD-HS:12.8g
- POTTING MATERIAL
- Expoxy(UL94-V0) for LDD-H/HW ; without potted for LDD-HS
MODEL ENCODING
- Blank (this model)
- Blank : pin style
- W
- wire style
- S
- SMD style
Test conditions and notes5
- 1.All parameters are specified at normal input(48VDC), rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
- 3.Test condition: 48VDC input.
- 4.Output voltage will always step down by 3 volts from input DC voltage.
- 5.The output of LDD-H should not be connected to the input of the same unit or output from other sources.
Technical drawings
Downloads
Datasheet1
Certificates4
Catalogues1
FAQ
Can I use the LDD-700H for a 700mA LED downlight?
Yes, this driver is designed for constant current operation at 700mA. It supports LED loads within a 2-52V constant current range. That makes it a fit for downlight designs that are specified for 700mA constant current.
Is the LDD-700H a good choice for small high-power LED arrays?
It can be used for small LED arrays when the array is intended to run at 700mA constant current. The driver supports LED strings from 2V up to 52V, so the total LED forward voltage must remain within that window. This is a constant current model, not a constant voltage supply.
Can the LDD-700H be used for LED signage modules?
Yes, if the signage module string is designed for 700mA constant current operation. The driver provides a 2-52V constant current range, which suits many custom module strings and compact light engines. It should not be used in place of a constant voltage driver for modules that expect fixed-voltage input.
Is this driver suitable for harsh temperature conditions?
The rated operating temperature range is -40°C to +85°C, with full load up to 71°C and derating above that. That gives it a wide environmental operating window for demanding indoor or protected outdoor equipment. The pin-style unit is also fully encapsulated to IP67.
How do I match LED strings to the LDD-700H?
Your LED load needs to be specified for 700mA constant current, and the total forward voltage must stay within the 2-52V constant current range. The exact number of LEDs depends on each LED's forward voltage, so there is no single fixed LED count. If the load requires constant voltage, choose a constant voltage driver instead.
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