3175 LED Driver

ISSI features their IS32LT3175 linear LED driver IC for automotive interior lighting

Image of Integrated Silicon Solution (ISSI) 3175 LED DriverIntegrated Silicon Solution, Inc. (ISSI) offers its IS32LT3175, a feature-rich AEC-Q100 (automotive electronics council) certified linear LED driver enabling reduced BOM count for low-cost and compact designs. The IS32LT3175 integrates a single-channel LED driver with a programmable 150 mA current source, push-button control, courtesy signal input, and integrated programmable fade-in / fade-out lighting control. The device is designed for use in LED-based map lights, dome lights, door lights, and other automotive lighting applications.

The IS32LT3175 integrates functions which normally require a microcontroller and several discrete components. Individual resistors are all that are required to adjust the LED current from 10 mA to 150 mA as well as the fade up / down ramp speed. There is no software programming required. The LED driver can be controlled by either a momentary contact switch or a courtesy signal input. An integrated debounce and latch circuit that conditions the switch input so a single press of the mechanical switch does not appear like multiple presses.

Features and Benefits

  • Reduced BOM: LED driver with theatrical dimming in one small 8-pin SOP package resulting in 65% fewer components requiring less printed circuit board area
  • Linear LED driver: Low-noise, low-EMI, linear current source adjustable from 10 mA~150 mA into one or more LEDs
  • Switch input: Integrates switch debounce and latching logic to enable use of low-cost momentary contact switch. The switch on / off state is held during start-stop operation when voltage drops below 6 V for a short period of time
  • Local or remote: Can be controlled remotely by the automobile’s body control module (BCM) or locally with a momentary contact switch. The local switch has priority over the remote BCM providing the user with direct control of the LED lamp
  • No microcontroller: Advanced LED performance can be adjusted with simple resistors, eliminating the need for a microcontroller
  • AEC-Q100: Meets stress testing specifications making it suitable for use in the harsh automotive environment with guaranteed operation from -40°C to +125°C

IS32LT3175 LED Driver

ImageManufacturer Part NumberDescriptionNumber of OutputsVoltage - Supply (Min)Voltage - Supply (Max)Available QuantityView Details
LED DRVR LINEAR PWM 150MA 8SOPIS32LT3175N-GRLA3-TRLED DRVR LINEAR PWM 150MA 8SOP15V42V2396 - ImmediateView Details
Published: 2016-08-31