PowTech PT4121
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 external resistor to set the nominal average output current, and a dedicated DIM input accepts either a DC voltage or PWM dimming.- Min Voltage : 36V
- Max Voltage : 75V
- Max Operating Temp : 85°C
- Min Operating Temp : -40°C
Source:
Octopart
| Part No. | PT4121 |
|---|---|
| Datasheet | PT4121 Download |
| Manufacturer |  PowTech |
| Description | Step-down High Brightness LED Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The PT4121 is available in SOT23-6 packages.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 DC Voltage or PWM
● Up to 1MHz switching frequency
● Adjustable Constant LED Current
● Typical 3% output current accuracy
● High-Side Current Se