172946001 Datasheet, PDF (1/21 Pages) Wurth Elektronik GmbH & Co. KG, Germany. – MagI³C Power Module Product Family LDHM - LED Step Down High Current Module

172946001
MagI³C Power Module Product Family
LDHM - LED Step Down High Current Module
A DESCRIPTION
The LDHM series of the MagI³C Power Modules
Family is a constant current Buck LED Driver
Module. The MagI³C LED driver 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 it 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
pulse which is dissolved by 256 PWM steps at
240 Hz to implement for general lighting. Protection
features include thermal shutdown, input under-
voltage lockout, 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
(TO263-7EP).
D TYPICAL APPLICATION CIRCUIT
TO263-7EP
01P
B FEATURES
 Peak efficiency up to 95 %
 LED Current capability: 300 mA - 450 mA
 Wide input voltage range: 4.5 V - 60 V
 Drives 1 to 16 LEDs in series 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 - 125 °C
C APPLICATIONS
 Indoor lighting:
 Spot light
 Down light
 Outdoor lighting:
 Street light
 Security light
 Tunnel light
 Industrial lighting:
 High-bay light
 Low-bay light
ILED High Power LED String
VIN
IIN
LED+ Module LED-
Exposed Pad
(EP)
LED+
IADJ
Data Sheet
©2014
DIM
CIN
GND
VREF
ILED(mA) 300 350
450
RIADJ(Ω) 499 SHORT SHORT
RVREF(kΩ)OPEN OPEN 10.5
01S
Würth Elektronik eiSos GmbH & Co. KG - REV 0.1
PRELIMINARY
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