PT4121 Description
The PT4121 is a high efficiency step-down controller.It is designed to operate in continuous conduction mode and drive single or multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. It operates with a wide input voltage from 6V to 60V and provides an externally adjustable output current. The PT4121 includes a high-side output current sense circuit, which uses an...
PT4121 Key Features
- Simple low parts count
- Wide input voltage range: 6V to 60V
- High efficiency (up to 97%)
- Single pin on/off and brightness control using
- Up to 1MHz switching frequency
- Adjustable Constant LED Current
- Typical 3% output current accuracy
- High-Side Current Se