iW6401-01A71 Dialog Semiconductor

iW6401 Company confidential Digital Programmable LED Driver IC General description iW6401 is a highly versatile digital processor IC for off-line LED drivers in smart lighting applications. With its high degree of configurability it can serve as a platform for a wide range of digital dimming LED applications. 2 Multiple dimming interfaces connect the iW6401 to home or building automation systems: I C-bus, DLT receiver (IEC 62756 compliant), light switch on/off events using a configurable state machine. Lamp dimming curves are programmable. iW6401 can serve as a power front-end for wireless communication modules, intelligent sensors or generic microcontrollers. An integrated LDO provides a stable supply voltage for external peripherals. All operating parameters and functions are configurable using unique multi-write OTP programming. Digital control loops provide precise control of both input power and light output. A high power factor can be achieved while maintaining stable and flicker-free light across an ultra-wide dimming range. iW6401 can actively manage lamp temperature using on-chip or off-chip sensors and a configurable state machine. Accurate temperature settings permit thermal optimization of the lamp design to reduce the cost of cooling parts. Other system supervision functions such as short circuit and open load can be easily configured via register settings. iW6401 can be configured for AC supply voltages ranging from 90 V to 264 V. It is available in a small leadless DFN12 package. Although the iW6401 offers ultimate flexibility with full programmability most applications will use predetermined data for programming for fastest time to market. Reference designs can be used to verify ready-made memory profiles. Key features High performance wide range dimming engine Regulated power for external master Quasi-resonant (soft) switching Programmable soft start Patented PrimAccurate LED current control End-of-Line diagnostics and calibration IEC62756 data receiver & bypass load Small leadless 4x4 mm DFN12 package I2C dimming and control interface Active PFC control with High Power Factor Programmable dimming curves Open/short protection with auto-restart OTP configuration memory State machine based temperature de-rating Software controlled standby/wakeup Internal/External temperature sensor Toggle-switch event driven state machine Input overvoltage protection Applications Dimmable retrofit LED bulbs Wireless dimmable LED bulbs and drivers Dimmable linear LED tubes IEC62756 compatible LED bulbs and drivers Standalone AC supply driven LED drivers Lamps with integrated smart sensors Datasheet Version 3.0 22-May-2015 CFR0011-120-00 Rev 4 1 of 66 2015 Dialog Semiconductor GmbH iW6401 Company confidential Digital Programmable LED Driver IC System and Application diagram Input AC EMI Converter LED Stage Startup (optional) isolated/nonisolated supply Module T1G T1S VBUS T2G VSENSE/ ICP EN VIN VAUX (optional) iW6401 Aux LDO IN VCC Supply C VCC GND LDO OUT NTC/SCL DATA/SDA GND (optional) Bluetooth Module Figure 1: iW6401 system diagram Figure 2: iW6401 typical application Datasheet Version 3.0 22-May-2015 CFR0011-120-00 Rev 4 2 of 66 2015 Dialog Semiconductor GmbH