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Mean Well NLDD-1200H DC/DC LED Driver CC 1200mA - Step-down

constant currentstep downhigh efficiency up to 97%IP67pin style

SKU NLDD-1200H

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Overview

NLDD-1200H is the model of this series: typical efficiency 95% at full load and 36VDC/48VDC input.

NLDD-H series is a 60W DC/DC LED driver featuring constant current output. NLDD-H operates from 10~56VDC and offers models with different rated current ranging between 350mA and 1400mA. With the high efficiency up to 96%, The 94V-0 flame retardant plastic case the fully-potted silicone to enhance the heat dissipation allows this series to fit for classⅢ or DC bus lighting application.

Features

DC/DC step-down converter
Constant current output: 350mA to 1400mA
Wide input voltage: 10 ~ 56VDC(59VDC Max.)
Wide output LED forward voltage: 6 ~ 52VDC
High efficiency up to 96%
Comply with BS EN/EN61347 and BS EN/EN55015 regulation
For class Ⅲ application(SELV)
Built-in PWM and remote ON/OFF control
Protections: Short circuit / Over temperature
Cooling by free air convection
Fully encapsulated and compact site
Suitable for driving illumination LED
3 years warranty

Specifications

NLDD-1200HSpecifications from the official datasheet (2024-10-16 edition)

OUTPUT

CURRENT RANGE: 1200mA
VOLTAGE RANGE^Note.4: 6 ~ 46VDC
CURRENT ACCURACY (Typ.): ±5% at 48VDC input
RIPPLE & NOISE(max.)^Note.2: 350mVp-p
SWITCHING FREQENCY: 200KHz

INPUT

VOLTAGE RANGE: 10 ~ 56VDC (59VDC Max.)
EFFICIENCY (max.): 95% at full load and 36VDC/48VDC input
DC CURRENT Full load^Note.3: 1200mA
DC CURRENT No load: 5mA

PWM DIMMING & ON/OFF CONTROL

REMOTE ON/OFF: Leave open if not use Power ON with dimming: DIM ~ -Vin >2.5 ~ 5VDC or open circuit Power OFF : DIM ~ -Vin < 0.8VDC or short
PWM FREQUENCY: 100 ~ 1KHz
QUIESCENT INPUT CURRENT IN SHUTDOWN MODE(max.): 2mA at PWM dimming OFF at 48VDC input

PROTECTION

SHORT CIRCUIT: Regulated at rated current Protection type: Can be continued, recovers automatically after fault condition is removed
OVER TEMPERATURE: Tj 165℃ typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.: -40 ~ + 50℃(Refer to derating curve)
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 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.): 90℃
SOLDERING TEMPERATURE: Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.)

EMC

SAFETY STANDARDS: LVD BS EN/EN61347-1, BS EN/EN61347-2-13;IEC61347 and EAC TP TC 004 approved
EMC EMISSION: Compliance to BS EN/EN55015, BS EN/EN61547
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,6,8, light industry level, EAC TP TC 020

OTHERS

MTBF: 29984.3K hrs min. Telcordia SR-332 (Bellcore) 2881.6Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 32.1*20.5*12.5mm or 1.26"*0.8"*0.49" inch (L*W*H)
WEIGHT: NLDD-H:15.6g ; NLDD-HW:18g (Please refer to Page 6 for packing)
POTTING MATERIAL: Expoxy(UL94-V0)

Test conditions and notes7

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 0.1μf capacitor.
3.Test condition: 48VDC input.
4.Output voltage will always step down by 4 volts from input DC voltage.
5.The output of NLDD-H should not be connected to the input of the same unit or output from other sources.
6.The power supply is regarded as a part of the components in the system, and the final EMI test needs to be tested with the final device. If an additional EMI filter circuit is required to meet the electromagnetic compatibility requirements, please refer to the EMC test report for details. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
7.Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com

Technical drawings

NLDD-1200H Mechanical Specification — Mechanical Specification

NLDD-1200H Derating Curve — Derating Curve

NLDD-1200H PWM Dimming Control — PWM Dimming Control

NLDD-1200H Efficiency VS Output Voltage — Efficiency VS Output Voltage

Typical applications

DC battery source lighting
Portable lighting
Commercial lighting
DC 48V Track lighting
DC 24V landscape lighting

Downloads

Certificates3

Mean Well NLDD-H-EMC Certificate PDF Download

Mean Well NLDD-CE-dec Certificate PDF Download

Mean Well NLDD-UK-dec Certificate PDF Download

Test reports1

Mean Well NLDD-1200H Test Report PDF Download

FAQ

Can I use the NLDD-1200H for LED downlights that need constant current?

Yes, this model is intended for constant current LED loads, including LED downlights, as long as the load operates within the 6-46V constant-current range. It is a 60W step-down driver, so it should not be used in place of a constant-voltage supply.

Is the NLDD-1200H a good fit for signage modules with a DC source already in the system?

It can fit signage modules that use constant current LEDs when the available input is within 10-56VDC and the LED load stays within the 6-46V constant-current range. Since it is a step-down constant current driver, the application has to match both the input range and the LED load requirements.

Can the NLDD-1200H be used for small constant-current LED arrays?

Yes, for small LED arrays that are specified for constant current rather than constant voltage. The driver supports up to 60W, and the array's combined forward voltage must stay within the 6-46V constant-current output window.

What should I check before pairing LEDs with the NLDD-1200H?

Check that the LED load is meant for constant current operation and that its total forward voltage falls within 6-46V during constant current operation. The number of LEDs depends on the forward voltage of each LED, so there is no single fixed LED quantity for this driver.

What is the difference between the NLDD-1200H and the other NLDD H-series versions?

All listed siblings are 60W models, but they differ by output current and constant-current voltage range. The 350H/350HW are 350mA at 6-52V, 500H/500HW are 500mA at 6-52V, 700H/700HW are 700mA at 6-52V, 1050H/1050HW are 1050mA at 6-52V, 1200H/1200HW are 1200mA at 6-46V, and 1400H/1400HW are 1400mA at 6-46V.

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Model	Power	Voltage	Current	IP Rating
Mean Well NLDD-1050HW DC/DC LED Driver CC 1050mA - Step-down Wire Type	60W	52V	1.05A	IP20	View
Mean Well NLDD-700HW DC/DC LED Driver CC 700mA - Step-down Wire Type	60W	52V	0.7A	IP20	View
Mean Well NLDD-700H DC/DC LED Driver CC 700mA - Step-down	60W	52V	0.7A	IP20	View
Mean Well NLDD-500HW DC/DC LED Driver CC 500mA - Step-down Wire Type	60W	52V	0.5A	IP20	View
Mean Well NLDD-500H DC/DC LED Driver CC 500mA - Step-down	60W	52V	0.5A	IP20	View
Mean Well NLDD-350HW DC/DC LED Driver CC 350mA - Step-down Wire Type	60W	52V	0.35A	IP20	View
Mean Well NLDD-350H DC/DC LED Driver CC 350mA - Step-down	60W	52V	0.35A	IP20	View
Mean Well NLDD-1400HW DC/DC LED Driver CC 1400mA - Step-down Wire Type	60W	46V	1.4A	IP20	View
Mean Well NLDD-1400H DC/DC LED Driver CC 1400mA - Step-down	60W	46V	1.4A	IP20	View
Mean Well NLDD-1200HW DC/DC LED Driver CC 1200mA - Step-down Wire Type	60W	46V	1.2A	IP20	View
Mean Well NLDD-1050H DC/DC LED Driver CC 1050mA - Step-down	60W	52V	1.05A	IP20	View

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