Allegro MicroSystems

A6211 LED Driver

Allegro’s A6211 is a constant-current, 3 A, PWM dimmable buck regulator LED driver

Image of Allegro MicroSystems' A6211 LED DriverThe A6211 is a switching buck regulator LED driver that provides constant-current output to drive high-power LEDs. With a wide input supply voltage from 6 V to 48 V, Allegro's A6211 device integrates a high-side N-channel MOSFET switch for DC-to-DC stepdown (buck) conversion. A true average current is output using a cycle-by-cycle, controlled on-time method. This new device has significant fault protection advantages including design techniques to address pin-pin shorts, pin-ground shorts and open and shorted external components. The A6211 is designed for the consumer, industrial, and architectural lighting markets in addition to light bars for scanners and multi-function printers.

Features
  • Supply voltage from 6 V to 48 V
  • True average output-current control
  • 3.0 A (max.) output over operating temperature range
  • Cycle-by-cycle current limit
  • Integrated MOSFET switch
  • Dimming via direct logic input or power supply voltage
  • Internal control loop compensation
  • Undervoltage lockout (UVLO) and thermal shutdown protection
  • Low power shutdown [1 µA (typ.)]
Applications
  • General illumination
  • Scanners and multi-function printers (light bars)
  • Architectural lighting
  • Industrial lighting
  • Display case lighting / MR16

A6211

ImageManufacturer Part NumberDescriptionInternal Switch(s)Number of OutputsAvailable QuantityPrice
IC LED DRIVER RGLTR PWM 3A 8SOICA6211GLJTR-TIC LED DRIVER RGLTR PWM 3A 8SOICYes174325 - Immediate$0.88View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionOutputs and TypeVoltage - OutputAvailable QuantityPrice
EVAL BOARD FOR A6211APEK6211GLJ-01-T-DKEVAL BOARD FOR A62111 Non-Isolated Output-2 - Immediate$99.69View Details
Published: 2013-07-02

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