LED lighting is the most power-hungry lighting application and often has a high degree of complexity. A multi-channel boost/buck topology is often preferred as this provides flexibility for the LED drive. The output LEDs can be dimmed by using a combination of low-power bipolar transistors with a shift register.
Features
- Easy-to-use shift-register-based LED drivers
- 3.3 V and 5 V interface voltage (available versions)
- 8- bit and 12-bit versions; can be cascaded
- Cost-effective integrated LED driver solution
- Reduced number of components/BOM lines
- Excellent quality in production (<110 ppb)
- NPIC family designed for LED driving
Applications
- Digital controlled adaptive non-glare
- Individually dimmable LED Control
- Accurate LED current control
- Compact design
- High efficiency driver design
- Low EMI solution using small scale highly integrated package technology
Key components
- 60 V to 80 V AEC-Q101 Power MOSFETs in LFPAK56 - BUK9Y3R5-40E / BUK9Y25-80E
- Highly power-efficient schottky diodes - PMEG6010ER
- Low RDSon medium-power MOSFETs in 2 x 2 mm DFN - PMPB215ENEA
- Small-form-factor, low VCEsat transistors in DFN
Block diagram
