Linear Technology’s LT3932 step-down DC/DC converter offers fixed-frequency, peak current control and PWM dimming for a string of LEDs. The device accurately regulates LED current to within ±1.5%, ...
LED-driver circuits can be dimmed by applying a variable duty cycle (pulse-width modulation, or PWM) to the LED. PWM exploits LED behavior: At higher current levels, the LED’s light output is higher ...
Linear Technology announces the LT3761, a 60V DC/DC controller designed to operate as a constant-current source and constant-voltage regulator. Its internal PWM dimming generator makes it ideal for ...
The ISL6545 and ISL6545A from Intersil are single-output PWM controllers. These devices integrate the MOSFET drivers, boot diode and current-sensing functions on a single chip. The ISL6545 and ...
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