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Home » Products » Regulators and Lighting » LED Drivers for Lighting » A6217
A6217 and A6217-1: Automotive-Grade, Constant-Current
PWM Dimmable Buck Regulator LED Driver
The A6217 is a single IC switching regulator that provides constant-current output to drive high-power LEDs.
It integrates a high-side N-channel DMOS switch for DC-to-DC step- down (buck) conversion. A true average
current is output using a cycle-by-cycle, controlled on-time method.
Output current is user-selectable by an external current sense resistor. Output voltage is automatically
adjusted to drive various numbers of LEDs in a single string. This ensures the optimal system efficiency.
LED dimming is accomplished by a direct logic input pulsewidth-modulation (PWM) signal at the enable pin.
The device is provided in a 3 mm × 3 mm wettable flank 10-pin DFN (suffix EJ) or an 8-pin narrow SOIC (suffix
LJ), both with exposed pad for enhanced thermal dissipation. Both packages are lead (Pb) free, with 100%
matte-tin leadframe plating.
APPLICATIONS:
Automotive lighting
Daytime running lights
Front and rear fog lights
Turn/stop lights
Map light
Dimmable interior lights
DATASHEETS
A6217 Datasheet
SAMPLE & BUY
Westmark Electronics (Allegro &
Sanken Semiconductors, Sanken
Power Supplies)
8705 SW Nimbus Ave, Suite - 320
Beaverton, OR 97008
Phone: (503)641-8780
Fax: (503)641-8738
Web: www.westmarkco.com
Dianne Seymour, inside sales, Email:
sales@westmarkco.com
If this is not your local representative,
find your local sales rep here.
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AEC-Q100 qualified
6 to 48 V supply voltage
True average output current control
3 A maximum output over operating temperature range (1.5 A for A6217-1)
Cycle-by-cycle current limit
Integrated MOSFET switch
Enable / PWM 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 typical)
Robust protection against:
Adjacent pin-to-pin short
Pin-to-GND short
Component open/short faults
Enhancements over A6213:
Dithering of switching frequency to reduce EMI
Able to drive single white LED from 18 V supply at 2.2 MHz
Smaller package option
A6217 Product Image
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Part Number Specifications and Availability
Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data Comments Samples Check
Distributor Stock
A6217KEJTR-1-J n/a -20°C to 85°C Yes View Data Contact your
local sales rep Check Stock
A6217KEJTR-J n/a -20°C to 85°C Yes View Data Contact your
local sales rep Check Stock
APEK6217KEJ-01-MH-0 DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep Check Stock
APEK6217KEJ-01-MH-01 DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep Check Stock
Click the image to view larger
Part Number Specifications and Availability
Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data Comments Samples Check
Distributor Stock
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APEK6217KLJ-01-MH DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep Check Stock
APEK6217KLJ-01-MH-01 DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep Check Stock
A6217KLJTR-1-T 8-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep Check Stock
A6217KLJTR-T 8-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep Check Stock
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product can reasonably be expected to cause bodily harm.
