• LDD-H Series Mean Well DC-DC Constant Current LED Driver

Model No. LDD-H Series

Current Range (mA) 300mA , 350mA , 500mA , 600mA , 700mA , 1000mA

LDD-350H[  ]  - Blank = pin style

LDD-350H[W] - W = wire style

LDD-350H[S] - S = SMD(Surface Mount Device) style

Model No. LDD-300H LDD-350H LDD-500H LDD-600H LDD-700H LDD-1000H
Output Current Range 300mA 350mA 500mA 600mA 700mA 1000mA
Voltage Range 2 ~ 52 VDC
Current Accuracy ±3% at 24VDC input ; ±4% at 48VDC input for LDD-H/HW ; ±5% for LDD-HS
Ripple & Noise (max.) 150mVp-p 150mVp-p 150mVp-p 200mVp-p 200mVp-p 350mVp-p
Switching Frequency 40KHz ~ 1000KHz
External Capacitance Load 2.2uF
Input: Voltage Range 9 ~ 56 VDC

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 Load 270mA 320mA 450mA 550mA 650mA 900mA
DC Current Full Load 5mA
Filter Capacitor
PWM Dimming & ON/OFF Control Remote ON/OFF Leave open if not use
Power ON with dimming: DIM ~ -Vin > 2.5 ~ 6VDC or open circuit
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°C typically (IC1) detect on main control IC
Protection type : shut down, recovers automatically after temperature goes down
Environment: Working Temp. -40 ~ +85°C (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°C, 10 ~ 95% RH
Temp. Coefficient ±0.03%/°C
Operating Case Temp.(max.) 100°C
Vibration 10 ~ 500Hz, 2G 10min. / 1cycle, period for 60min. each along X, Y, Z axes
EMC EMC Emission Compliance to EN55015, FCC part 15 class B
EMC Immunity Compliance to EN61000-4-2,3,4,5,6,8; Light Industry Level, criteria A
Others: MTBF 2000Khrs min. MIL-HDBK-217F (25°C)
Dimension 31.8 x 20.3 x 12.2mm or 1.25 x 0.8 x 0.48 inch(LxWxH) for LDD-H/HW; 31.8 x 20.3 x 11.4mm or 1.25 x 0.8 x 0.45 inch for LDD-HS (LxWxH)
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
Electrical Specifications
Dimensions 31.8 x 20.3 x 11.4 mm / 1.25 x 0.8 x 0.45 Inches
PDF Specs View Spec Sheet
Condition new
Style / Option Blank : pin style

LDD-H Series Mean Well DC-DC Constant Current LED Driver

  • Brand: Mean Well
  • Product Code: LDD-H Series
  • Availability: Call for Availability
  • $5.40

Available Options

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