LAST-TIME BUY: This part is in production but has been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Date of status change: December 2, 2014. Deadline for receipt of LAST TIME BUY orders: June 1, 2015.
Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A4447SLJTR-T.
The A8499 is a step-down regulator that will handle a wide input of operating voltage ranges. It is a fixed off-time current-mode-controlled buck regulator. The regulator requires an external clamping diode, inductor and filter capacitor. The off time is determined by an external resistor.
It will operate in both continuous and discontinuous modes. An internal blanking circuit will be used to filter out transients due to the reverse recovery of the external clamp diode. Typical blanking time is 200 nS.
The output voltage is adjustable from 1.2 V to 24 V based on a resistor divider and the 1.2 V 3 percent reference.
The A8499 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ).
Allegro MicroSystems, LLC provides Gerber files for reference only. Any material, information, or instructions are provided AS IS without warranty of any kind. It is the responsibility of the User(s) to optimize any Printed Circuit Board (PCB) layout, as well as the selection of any components, for the specific application of the User(s).
Evaluation Board for A8499 is available upon request. Please contact your local representative.
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|Part Number||Package Type||Temperature||RoHS
|Part Composition /
|A8499SLJTR-T||8-lead SOIC||-20°C to 85°C||Yes||View Data||Last time buy||Contact your
local sales rep
|APEK8499SLJ-01||DEMO BOARD||-20°C to 85°C||No||--||Last time buy||Contact your
local sales rep