172946001
172946001 is LDHM manufactured by Wurth.
DESCRIPTION
The LDHM type of the Mag I³C Power Module family provides a fully integrated constant current LED driver including the buck switching regulator and inductor in a package.
The 172946001 offers high efficiency and delivers up to 450m A of LED current. It operates from 4.5V input voltage up to 60V and supports up to 16 LEDs in series. It is designed for fast PWM dimming for no color shift.
It is available in an innovative industrial high power density TO263-7EP (10.16 x 13.77 x 4.57mm) package that enhances thermal performance and allows for hand or machine soldering.
The LDHM regulator has an on-board protection circuitry to guard against thermal overstress and electrical damage featuring thermal shut-down, input under-voltage lockout and LED short-circuit protections.
TYPICAL APPLICATIONS
ƒ Indoor lighting: Spot light, down light ƒ Outdoor lighting: Street light, security light, tunnel light ƒ Outdoor lighting: High-bay light, low-bay light
FEATURES
ƒ Peak efficiency up to 95% ƒ Default LED current: 350m A ƒ Adjustable LED current up to 450m A ƒ Current sharing in parallel operation for higher output current ƒ Wide input voltage range: 4.5V to 60V ƒ Output voltage range: 4.5V to 60V ƒ Maximum output power: 27W ƒ PWM dimming / Analog dimming ƒ Integrated shielded inductor ƒ Single exposed pad for best-in-class thermal performance ƒ Typical LED Current Accuracy ±3.5 % ƒ LED short circuit protections ƒ Under voltage lockout Protection (UVLO) ƒ Fixed switching frequency at 800k Hz ƒ patible with ceramic and Low ESR Capacitors ƒ Operating ambient temp. range up to 85°C ƒ Operating junction temp. range: -40 to 125°C ƒ Ro HS & REACH pliant ƒ Mold pound UL 94 Class V0 (flammability testing) certified ƒ plies with EN 55015 radiated emissions standard
TYPICAL CIRCUIT DIAGRAM
We-online. © May 2016
VIN CIN
High Power LED String COUT
1 LED+
LED- 7
2 LED+ Module
IFIX 6
3 DIM
5 ISET
PGND EP
AGND 4
RIADJ
Würth Elektronik ei Sos Gmb H & Co. KG
- Data Sheet Rev....
