WLMDU9456001JT / 172946001 3 MagI C Power Module LDHM - LED Step Down High Current Module 4.5 - 60V / 300 - 450mA / Up to 16 high power 3.2V LEDs DESCRIPTION FEATURES The LDHM of the MagIC Power Module family provides a Peak efficiency up to 95% fully integrated constant-current LED driver, including the Default LED current: 350mA controller IC, freewheeling diode and inductor in one Adjustable LED current from 300 to 450mA package. Current sharing in parallel operation for higher output demands The 172946001 offers high efficiency and delivers an LED Wide input voltage range from 4.5V to 60V current in the range of 300mA to 450mA. It operates with Up to 16 high power 3.2V LEDs an input voltage from 4.5V up to 60V and supports up to Maximum output power: 23W 16 LEDs in series, each with a forward voltage of 3.2V. The PWM dimming / analog dimming MagIC Power Module is designed to maintain chromaticity Integrated shielded inductor during PWM dimming. Single exposed pad for best-in-class thermal performance It is available in an innovative and robust industrial high Typical LED current accuracy: 3.5 % power density TO263-7EP (10.16 x 13.77 x 4.57mm) LED short circuit protection package that enhances thermal performance. Overtemperature protection Undervoltage lockout (UVLO) The LDHM module has on-board over temperature Fixed switching frequency at 800kHz protection, input undervoltage lockout and LED short- Compatible with ceramic and low ESR capacitors circuit protection. Operating ambient temp. range up to 85C Operating junction temp. range: -40 to 125C RoHS & REACh compliant TYPICAL APPLICATIONS Mold compound UL 94 Class V0 (flammability testing) Illumination lighting for industry, railway, street lights, certified ambient, architecture, stage, construction site, signage, Complies with EN 55015 radiated emissions standard traffic lights, horticulture, display background applications. TYPICAL CIRCUIT DIAGRAM High Power LED String C OUT 1 7 V IN LED+ LED- 2 LED+ Module 6 IFIX C 5 IN 3 DIM ISET INTERNALLY PGND AGND CONNECTED R IADJ EP 4 we-online.com Wrth Elektronik eiSos GmbH & Co. KG Data Sheet Rev. 2.0 November 2020 1/35 6 7 WLMDU9456001JT / 172946001 3 MagI C Power Module LDHM - LED Step Down High Current Module PACKAGE LED+ 1 2 LED+ YMLLLLG3 DIM 3 WE201 Exposed Pad = PGND AGND 4 Connect to AGND ISET 5 EP IFIX 6 6 LED- 7 7 Package marking Top through view MARKING DESCRIPTION Marking Description WE Wrth Elektronik trade name Y Year M Month LLLL Lot trace code G3 Lead finish code per JEDEC norm (green 3 mat sin) WE201 Part identifier PIN DESCRIPTION SYMBOL PIN No. TYPE PIN DESCRIPTION Supply pin and rail connection to the anode of the LED string. LED+ 1, 2 Power Dimming control pin. If left floating, the driver is enabled. Optional: apply a logic level DIM 3 Input PWM signal to control the brightness of the LED string using PWM dimming. The analog ground pin is the low noise GND for the current setting resistor and the AGND 4 Supply internal reference. Do not connect the input capacitor to this pin. The analog ground pin is internally connected to the exposed pad. Connect a resistor between the ISET pin and AGND to adjust the LED current in a ISET 5 Input range of 300mA to 450mA. If the default LED current of 350mA is desired, leave this pin floating and connect IFIX to AGND. Connect the IFIX pin to AGND to set the LED current to the default value of 350mA. IFIX 6 Input In case a different value of LED current is required, leave this pin floating. The current return pin of the LED string. Connect to the cathode of the LED string. LED- 7 Power Exposed power ground pad. Connect to copper plane(s) with thermal vias for better PGND EP Power thermal performance. This pin is internally connected to AGND. we-online.com Wrth Elektronik eiSos GmbH & Co. KG Data Sheet Rev. 2.0 November 2020 2/35