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LT1946 - 1.2MHz Boost DC/DC Converter

Description

of the part’s operation.

At the start of the oscillator cycle, the SR latch is set, turning on the power switch Q1.

The switch current flows through the internal current sense resistor generating a voltage.

Features

  • s s s s s s s.

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Full PDF Text Transcription

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LT1946 1.2MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start FEATURES s s s s s s s DESCRIPTIO 1.5A, 36V Internal Switch 1.2MHz Switching Frequency Integrated Soft-Start Function Output Voltage Up to 34V Low VCESAT Switch: 300mV at 1.5A (Typ) 8V at 430mA from a 3.3V Input Small 8-Lead MSOP Package U APPLICATIO S s s s s TFT-LCD Bias Supplies GPS Receivers DSL Modems Local Power Supplies The LT®1946 is a fixed frequency step-up DC/DC converter containing an internal 1.5A, 36V switch. Capable of generating 8V at 430mA from a 3.3V input, the LT1946 is ideal for large TFT-LCD panel power supplies. The LT1946 switches at 1.2MHz, allowing the use of tiny, low profile inductors and low value ceramic capacitors.
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