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Datasheets:
A6210: 3 A, 2 MHz Buck-Regulating LED Driver (PDF)
Selection Guides:
Power Integrated Circuits,
LED Display Drivers,
Power Management ICs,
Power Management ICs: Switching Regulators
Technical Publications:
Optimized Control Schemes Improve LED Driver Performance (PDF),
A6210 Design Aid Spreadsheets (Right-click and Save Target As to Desktop) (Excel)
Press Releases:
A6210: Allegro MicroSystems, Inc. Introduces New 3 A, 2 MHz Step-Down (BUCK) LED Driver,
A6210: Hoch effizienter und schnell schaltender LED-Treiber-IC im kompakten Gehäus,
A6210: Circuit Driver de LED dans un boitier compact offrant un haut rendement et une haute fréquence de découpage
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A6210
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
Applications
- High brightness LEDs
- LED driver modules, power supplies and lamps, such as MR16 and MR11
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.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A6210GEUTR-T | 16-lead QFN/MLP | Yes | view data | -40 °C to 105 °C | new |
Contact Local Sales Representative or check distributor stock |
|
| APEK6210GEU-01-T | DEMO BOARD | No | -- | -40 °C to 105 °C |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.