Datasheet4U Logo Datasheet4U.com

A6274 - Linear Current Regulator/Controller

General Description

The A6274 and A6284 are programmable linear current regulator ICs for driving automotive LED arrays.

The LED current is programmed by external resistors.

These devices sink up to 60 mA (A6274) or 120 mA (A6284), from each of six LED pins, to drive strings of high-brightness LEDs.

Key Features

  • Six LED current sinks rated up to 60 mA (A6274) or 120 mA (A6284).
  • Total LED drive current.
  • up to 360 mA or 720 mA.
  • Wide input voltage range of 5 to 42 V for start/stop, cold- crank, and load-dump requirements.
  • Low-dropout voltage.
  • drives two series WLEDs from 7 V input.
  • Gate driver for external ballast P-MOSFET.
  • LEDs combined in two groups with separate ENx and ISETx.
  • LED current level set by external reference resist.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
A6270-1 Automotive LED Controller Allegro
A6271-1 Automotive High-Current LED Controller Allegro
A627308 128K X 8 BIT CMOS SRAM AMIC Technology
A6275 8-Bit Serial Input Constant-Current Latched LED Driver Allegro
A6276 16-Bit Serial Input Constant-Current Latched LED Driver Allegro

Other Datasheets by Allegro MicroSystems

Part Number Description
A6274-1 Linear Current Regulator/Controller
A6271 Automotive High-Current LED Controller
A6210 3A 2MHz Buck-Regulating LED Driver
A6219DS Dual Full-Bridge PWM Motor Driver
A6252 STR-A6252

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
A6274, A6274-1 A6284, A6284-1 Linear Current Regulator and Controller for Automotive LED Arrays FEATURES AND BENEFITS • Six LED current sinks rated up to 60 mA (A6274) or 120 mA (A6284) • Total LED drive current—up to 360 mA or 720 mA • Wide input voltage range of 5 to 42 V for start/stop, cold- crank, and load-dump requirements • Low-dropout voltage—drives two series WLEDs from 7 V input • Gate driver for external ballast P-MOSFET • LEDs combined in two groups with separate ENx and ISETx • LED current level set by external reference resistors • Internal or external PWM dimming • Controlled output drivers slew during PWM for lower EMI • Fault detection features: LED string open, LED pin short-to-ground, single LED short, VOUT short-toground, VIN overvoltage, and thermal protection • Input