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Mean Well LDB-300LW DC/DC LED Driver CC 300mA - Buck-boost

contant current, buck-boost, high efficiency up to 91%, wire style

SKU:

LDB-300LW

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Description

Features

DC/DC buck-boost converter

Constant current output: 300mA to 600mA

Wide input voltage: 9~36VDC

Wide output LED string voltage: 2~40VDC

High efficiency up to 91%

Comply with BS EN/EN55015 and FCC part15

Build-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

Compact size

High reliability

Suitable for driving illumination LED

3 years warranty

General Specification

Current accuracy	±5%
Over temperature protection	Shut down, auto-recovery
Efficiency	90% (typical)
Short circuit protection	Regulated at rated output current
Working temperature	-40°C to +70°C
EMC	Compliance to EN55015 class B, EN61000-4-2,3,4,6,8, EAC TP TC 020
Temp. Coefficient	±0.03% / °C
Dimension (LxWxH) (mm)	31.8x20.3x12.2mm
Potting material	Expoxy(UL94-V0)

Specifications

Brand

Mean Well
Series

LDB Series
Power Rating

12 Watt
Output Voltage

40 Volt
Rated Current

0.3 Ampere
Input Voltage

9V~36V
Standards Met

CE,EAC
Operation Mode

Constant Current
Operating Temperature

-40°C~71°C
Warranty

3 Year
Length

3.18 cm
Width

2.03 cm
Height

1.22 cm
Weight

0.02 kg

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Frequently Asked Questions

Can I use the LDB-300LW for outdoor LED downlights?

It can be used for LED downlight modules that require a 300mA constant current driver and fit within the 2-40V output range. Its IP67 waterproof rating supports outdoor or moisture-prone environments when the rest of the fixture is also rated appropriately.

Is the LDB-300LW suitable for weather-exposed signage modules?

Yes, this model is rated IP67 Waterproof and is intended for constant current LED loads. For signage modules, the key is that the module must match the 300mA constant current output rather than expect constant voltage power.

Can the LDB-300LW run a small LED array from a variable low-voltage source?

Yes, the buck-boost design supports the listed 9-36VAC input range, which helps when the source voltage varies within that span. The driver is rated for 12W output with constant current operation.

Is this a good choice for compact LED assemblies in damp or cold environments?

It is better suited than indoor-only drivers because it carries an IP67 rating and an operating temperature range of -40°C to +71°C. Those limits make it useful for compact constant current LED assemblies exposed to cold, moisture, or changing weather.

How do I size an LED load for the LDB-300LW?

This is a constant current 300mA driver, so it should be paired with LED loads designed for constant current operation rather than constant voltage. The CC output voltage range is 2-40V, and the number of LEDs depends on the forward voltage of each LED.

What is the difference between the LDB-300LW and the other LDB models?

The sibling list shows LDB-300L at 300mA, 2-40V, 12W; LDB-350L and LDB-350LW at 350mA, 2-40V, 14W; LDB-500L and LDB-500LW at 500mA, 2-32V, 16W; and LDB-600L and LDB-600LW at 600mA, 2-30V, 18W. The LDB-300LW itself is the wire style version of the 300mA, 12W, 2-40V option.

Model	Power	Voltage	Current	IP Rating
Mean Well LDB-600LW DC/DC LED Driver CC 600mA - Buck-boost	18W	30V	0.6A	IP67	View
Mean Well LDB-600L DC/DC LED Driver CC 600mA - Buck-boost	18W	30V	0.6A	IP67	View
Mean Well LDB-500LW DC/DC LED Driver CC 500mA - Buck-boost	16W	32V	0.5A	IP67	View
Mean Well LDB-500L DC/DC LED Driver CC 500mA - Buck-boost	16W	32V	0.5A	IP67	View
Mean Well LDB-350LW DC/DC LED Driver CC 350mA - Buck-boost	14W	40V	0.35A	IP67	View
Mean Well LDB-350L DC/DC LED Driver CC 350mA - Buck-boost	14W	40V	0.35A	IP67	View
Mean Well LDB-300L DC/DC LED Driver CC 300mA - Buck-boost	12W	40V	0.3A	IP67	View

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