A6210: 3 A, 2 MHz Buck-Regulating LED Driver

LAST TIME BUY: This product has reached the end of its life cycle and will no longer be offered by Allegro. This product is considered obsolete and customer notification has been provided. All orders are accepted as final builds. Date of status change: September 1, 2014. Deadline for LTB is November 30, 2014.

The A6210 is a buck regulator that uses valley current-mode control. This control scheme allows very short switch on-times to be achieved, making it ideal for applications that require high switching frequencies combined with high input voltages and low output LED span voltages.

Low system cost is accomplished through high switching frequencies of up to 2.0 MHz, allowing smaller and lower value inductors and capacitors. In addition, few external components are required through high levels of integration. Optimal drive circuits minimize switching losses.

The switching frequency is maintained constant, as the on-time is modulated by the input voltage. This feed-forward control ensures excellent line correction. The on-time is set by an external resistor pulled-up to the input supply.

Internal housekeeping and bootstrap supplies are provided which require the addition of only one small ceramic capacitor. A top-off charge pump ensures correct operation at light loads.

Internal diagnostics provide comprehensive protection against input undervoltages and overtemperatures.

The device package is a 16-contact, 4 mm × 4 mm, 0.75 mm nominal overall height QFN, with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100% matte tin leadframe plating.

Applications

  • High brightness LEDs
  • LED driver modules, power supplies and lamps, such as MR16 and MR11
DATASHEETS
SAMPLE & BUY

Respin Sales, Inc. (Allegro & Sanken Semiconductors) 
608 Westwood Office Park
Fredericksburg, VA 22401
Phone: 540-548-4979
Web: www.respinsales.com
Email: ronid@respinsales.com

If this is not your local representative, find your local sales rep here.

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  • User-configurable on-time, achieving switching frequencies up to 2.0 MHz
  • Brightness control through PWM of DIS pin
  • Minimal external components required
  • No output capacitor required
  • Wide input voltage range: 9 to 46 V
  • Low 0.18 V sense voltage for higher efficiency
  • Output Current: up to 3.0 A
  • Low standby current <100 µA
  • Thermal shutdown
  • Supplied in a thermally-enhanced 4 mm QFN package

The device package is a 16-contact, 4 mm × 4 mm, 0.75 mm nominal overall height QFN, with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100% matte tin leadframe plating.

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Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A6210GEUTR-T 16-lead QFN/MLP -40°C to 105°C Yes View Data Last time buy Contact your
local sales rep
Check stock
APEK6210GEU-01-T DEMO BOARD -40°C to 105°C No -- Last time buy Contact your
local sales rep
Check stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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