IS32LT3168
DESCRIPTION
The IS32LT3168 is a single channel linear programmable current regulator capable of up to 200m A. It operates as a standalone LED driver configurable with external resistors; a single external resistor programs the current level, while another resistor programs the Fade In/Out ramp rate for the channel.
The IS32LT3168 also integrates a low-power and highsensitivity omnipolar Hall-effect sensor for contactless switching of the LEDs. The Hall-effect switch operates with either a north or a south magnetic pole. For user application flexibility, the switch output polarity can be set by the dedicated POL pin; to assert when a magnet is present or when the magnetic field is removed.
This device features
124 steps Gamma-corrected Fade In and Fade Out algorithm. The output LED current gradually ramps up to the full source value after the ENB pin is asserted (pulled low) or the LED current gradually ramps down to zero when the ENB pin is deasserted (pulled high). The fade ramp can...
