A6211GLJTR-T

• Product introduction

It is a single IC chipSwitching regulators, which provides a constant current output to drive high-power LEDs. It integrates a high-side N-channel DMOS switch for DC-to-DC step-down conversion. The true average current is output by a cycle-by-cycle, controlled on-time method.

An external current sense resistor allows the user to select the output current. The output voltage is automatically adjusted to drive different numbers of LEDs within a single string. This guarantees optimal system efficiency.

LED dimming is accomplished by enabling a direct logic input pulse-width modulation (PWM) signal at the enable pin.

The device is available in a small 8-pin narrow SOIC package (suffix LJ) and is fitted with an exposed heat sink for enhanced heat dissipation. It is packaged as a lead (PB) free product and features 100% matte tin leadframe plating.

• Supply voltage 6 to 48 V
• True average output current control
• The maximum output over the 3.0 operating temperature range is 3.0 A
• Cycle-by-cycle current limit
• Integrated MOSFET switch
• Dimming via direct logic input or supply voltage
• Internal control loop compensation
• Undervoltage lockout (UVLO) and thermal shutdown
• protection
• Low power shutdown (1 μA typical)
• Provides robust protection against the following failures:
  • Adjacent pin-to-pin shorts
  • Pin to ground short circuit
  • Component open/short faults