US Patent 7248026 Single-pin tracking/soft-start function with timer control

Patent 7248026 was granted and assigned to Micrel on July, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Micrel

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7248026

Date of Patent

July 24, 2007

Patent Application Number

11288884

Date Filed

November 28, 2005

Patent Primary Examiner

‌

Gary L Laxton

Patent abstract

A voltage regulator includes a voltage divider connected between a soft-start pin and the voltage regulator's error amplifier. The voltage divider has the same divider ratio as that of the voltage regulator's feedback voltage divider, which is used to divide the regulated output voltage fed back to the error amplifier. To facilitate soft-start operations, an external, user-supplied capacitor is connected to the soft-start pin. To facilitate voltage tracking operations, a predetermined master supply voltage is applied to the soft-start pin.