LDHM Series MagI³C Power Modules

Product Highlights > LDHM Series MagI³C Power Modules

            LDHM Series MagI³C Power Modules
                    Würth Elektronik introduces its LDHM series, of the MagI³C power modules family, in a TO-263 package
    

Image of Wurth Electronics' LDHM Modules TO-263 Package Würth Elektronik LDHM series, of the MagI³C power modules family, are constant, buck, LED driver modules. The module drives a maximum load of 450 mA LED current and comprises a fully integrated current driver with passives, all in one package. The MagI³C LED driver module provides a ready-made solution that is both highly efficient and can be used for a variety of single-string LED lighting applications. It requires an input voltage from 4.5 V to 60 V and provides a preset LED current of 350 mA. The LED current is adjustable from 300 mA to 450 mA by loading a single external resistor. The energy efficiency is up to 95%.

The MagI³C LED driver module operates at a constant switching frequency of 800 kHz for low electromagnetic interference (EMI), and it is designed according to the standard EN55015. The module has a fast control loop to fine LED current, which is dissolved by 256 PWM steps at 240 Hz to implement for general lighting. Protection features include thermal shutdown, input under-voltage lockout, and LED open-circuit and short-circuit protection. The MagI³C LED driver module is designed as an industrial high power density package with a low profile and a small outline.

Application Notes

Features

Peak efficiency up to 95%
LED current capability: 300 mA to 450 mA
Wide input voltage range: 4.5 V to 60 V
Drives one to sixteen LEDs in a series with up to 60 V input
Typical LED current accuracy ±3.5%
Switching frequency fix at 800 kHz
PWM dimming

High contrast ratio (min. PWM current < 16 µs)
Integrated magnetics solution for ease-of-use
Single exposed pad for best thermal performance
Connectable in parallel for higher-current operations
Compatible with ceramic and low-ESR capacitors
Input under-voltage lockout protection (UVLO)
Temperature range: -40°C to 125°C

Characteristics

Peak efficiency up to 95%
PWM dimming possible using μController with 8-bit timer at 256 steps
LED current capability: 300 mA – 450 mA
Wide input voltage range: 4.5 V – 60 V
Drives one to sixteen LEDs in a series up to 60 V
Switching frequency fixed at 800 kHz
High-contrast ration dimming
Integrated power magnetics for ease-of-use
Connectable in parallel for higher current operations
Packaged in TO-263-7EP
Constant on-time regulation (COT)

Applications

Indoor lighting: spot light, down light
Outdoor lighting: street light, security light, tunnel light
Industrial lighting: high-bay light, low-bay light

LDHM Modules TO-263 Package

	Image	Manufacturer Part Number	Description	Number of Outputs	Voltage - Input (Min)	Available Quantity	Price	View Details
		172946001	LED DRIVER CC BUCK 4.5-60V 450MA	1	4.5V	156 - Immediate	$58.61	View Details

ABC of Power Modules Design Guide

	Image	Manufacturer Part Number	Description	Title	Author(s)	Publisher	Available Quantity	Price	View Details
		744016	ABC OF POWER MODULES AT APEC	ABC of Power Modules	Steffen Wolf, Ralf Regenhold, Jan Stephan	Würth Elektronik	0 - Immediate	$118.54	View Details

Published: 2015-03-11

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LDHM Series MagI³C Power Modules