GENERAL DESCRIPTION
The IS32LT3175 is a single channel linear programmable current regulator capable of up to 150mA. It integrates a debounce and latch circuit on the channel enable pin (EN) to facilitate the use of a low cost momentary contact switch. The PWM pin can be interfaced to a logic level “courtesy light” signal to directly drive the LED channel. The IS32LT3175P accepts a positive polarity PWM signal while the IS32LT3175N accepts a negative polarity PWM signal.

FEATURES
● Operating voltage 5V to 42V
● Single channel current source
   - Programmable current via a single external
   resistor
   - Configurable from 20mA to 150mA
● Momentary contact button EN input
   - Input is debounced and latched
   - Higher priority than PWM input
   - Gamma corrected Fade In/Out algorithm
   - Pull down resistors set independent fade IN and
   OUT ramp time
● PWM input pin driven by external PWM source
   - PWM directly drives the current source
   - IS32LT3175P – Positive polarity
   - IS32LT3175N – Negative polarity
● Fault Protection:
   - OUT pin shorted to GND
   - ISET pin shorted to GND
   - Over temperature
● SOP-8-EP package
● Automotive Grade:
   - IS32LT3175P – AEC-Q100
   - IS32LT3175N – AEC-Q100
● Operating temperature range from -40°C ~ +125°C

APPLICATIONS
● Automotive Interior:
   - Map/Dome light
   - Puddle lamp in doors
   - Glove box
   - Vanity mirror