Maker : Allegro MicroSystems
Part No. : A6210

  Datasheet PDF : A6210.pdf
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Shortcut : A6210  A6219DS 

Product Information

A6210 www.DataSheet4U.com 3 A, 2 MHz Buck-Regulating LED Driver Features and Benefits ▪ 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 Description 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 Package 16-contact QFN (suffix EU): 4 mm × 4 mm × 0.75 mm Typical Application VIN 24 V R1 150 kΩ C1 1.0 μF VIN BOOT LX C2 22 nF L1 68 μH TON A 6210 D1 ISEN R2 390 mΩ LED1 LED2 PWM or Switch DIS NC GND SGND LED3 LED span voltage = 10.5 V Average LED current = 500 mA Peak to peak current = 60 mA Switching frequency = 1.4 MHz Efficiency = 90.5% Suggested Parts Name C1 C2 D1 L1 R1 R2 Description 1 μF, 25V, X5R or X7R ceramic, 1210 22 nF, 50V, X5R or X7R ceramic, 0805 1 A, 30 V, Schottky diode 68 μH, 1 A inductor 180 kΩ, 1%, 0805 390 mΩ, 1%, 0805 Manufacturer - Part Number Taiyo Yuden, TDK Taiyo Yuden - NR 6045T 680M 6210-DS, Rev. 1 A6210 3 A, 2 MHz Buck-Regulating LED Driver www.DataSheet4U.com Selection Guide Part Number A6210GEUTR-T Packing 1500 pieces per reel Package 16-contact 4 mm × 4 mm QFN with exposed thermal pad Absolute Maximum Ratings (reference to GND) Characteristic VIN Pin Supply Voltage LX Pin Switching Node Voltage ISEN Pin Current Sense Voltage DIS Pin Disable Voltage TON Pin On-Time Voltage Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Symbol VIN VLX VISEN VDIS VTON TA TJ(max) Tstg Range G Notes Rating –0.3 to 50 –1 to 50 –1.0 to 0.5 –0.3 to 7 –0.3 to 50 –40 to 105 150 –55 to 150 Units V V V V V ºC ºC ºC Recommended Operating Conditions Characteristic Supply Voltage Switching Node Switching Frequency Range Operating Ambient Temperature Junction Temperature Symbol VIN VLX fSW TA TJ Continuous conduction mode Conditions Min. 9 –0.7 0.1 –40 –40 Typ. – – – – – Max. 46 46 2.0 105 125 Units V V MHz ºC ºC Thermal Characteristics may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance, Junction to Ambient Package Thermal Resistance, Junction to Pad Symbol RθJA RθJP Test Conditions* On 4-layer PCB based on JEDEC standard On 4-layer PCB based on JEDEC standard Value 36 2 Units ºC/W ºC/W *Additional thermal information available on the Allegro website. Allegro MicroSyste...

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