MAX16840ATB+T

MAX16840 LED Driver with Integrated MOSFET

Analog Devices MAX16840 LED driver with integrated MOSFET features a proprietary input-current control scheme allowing LED lamps to be compatible with electronic transformers and dimmable with standard trailing-edge dimmers (where electronic transformers are present). The Analog Devices MAX16840 LED driver can be used in buck, boost, and buck-boost topologies. It has an integrated 0.2Ω (max), 48V switching MOSFET and uses constant-frequency average current-mode control. The Analog Devices MAX16840 LED driver features analog dimming and thermal foldback, including output overvoltage and internal overtemperature protection. This Analog Devices LED driver is designed for MR16 and other 12V AC or DC input LED applications.

IS32LT3175N/P Single-Channel Linear LED Drivers

ISSI IS32LT3175N/P Single-Channel Linear LED Drivers come with fade in/out and PWM dimming. The regulators serve as a stand-alone LED driver-configurable from 20mA to 150mA with external resistors, no microcontroller is necessary. A logic level “courtesy light” signal from the PWM pin can be interfaced to precisely drive the LED channel. The IS32LT3175P obtains a positive polarity PWM signal. In addition, the IS32LT3175N obtains a negative polarity PWM signal. The regulator integrates a 63-step fade-in and fades out the algorithm (Gamma correction). This causes the output LED current to increasingly rise up to the full source value after the EN pin is pulsed.

Optical ADI SLP