iW3637 Description
The iW3637 is a high-performance AC/DC power controller optimized for non-isolated buck or isolated flyback converter applications to step-down a high-voltage DC input to drive LEDs in SSL lighting applications. A converter designed with the iW3637 can work with a DC input voltage from a front-end, off-line boost converter to minimize low frequency output ripple current, and virtually eliminate all flicker in the...
iW3637 Key Features
- Supports buck and flyback topologies with input from
- Wide VCC operating range from 7.5V to 30V front-end off-line boost converter or rectified AC input
- Fast dimming transient response
- Enhanced MOSFET driver supports output power up to 150W in an SOIC-8 package
- Built-in over-temperature protection with temperaturecurrent derating
- PrimAccurateTM sensing achieves tight output current regulation (±3%)
- External NTC-based over-temperature protection (iW3637-02 only)
- Independent maximum load current setting interface
- Configurable dimming curve: linear or logarithm
- Low standby power
iW3637 Applications
- Supports buck and flyback topologies with input from
- Wide VCC operating range from 7.5V to 30V front-end off-line boost converter or rectified AC input