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LT3593 - 1MHz White LED Driver

General Description

The LT®3593 is a step-up DC/DC converter designed to drive up to ten white LEDs in series from a Li-Ion cell.

Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors.

Key Features

  • a unique high side LED current sense that enables the part to function as a “one wire current source” where the low side of the LED string can be returned to ground anywhere. Additional features include output disconnect in shutdown, open LED protection and 1-pin shutdown/LED current control. The CTRL pin is toggled to adjust the LED current via an internal counter and a 5-bit DAC. The LT3593 switches at 1MHz, allowing the use of tiny external components. Constant frequency switching results in.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com LT3593 1MHz White LED Driver with Output Disconnect and One Pin Current Programming DESCRIPTION The LT®3593 is a step-up DC/DC converter designed to drive up to ten white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors. The device features a unique high side LED current sense that enables the part to function as a “one wire current source” where the low side of the LED string can be returned to ground anywhere. Additional features include output disconnect in shutdown, open LED protection and 1-pin shutdown/LED current control. The CTRL pin is toggled to adjust the LED current via an internal counter and a 5-bit DAC.