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LT1432 - 5V High Efficiency Step-Down Switching Regulator Controller

General Description

The LT1432 is a dedicated 5V buck converter driver chip intended to be used with an IC switcher from the LT1070 family.

This family of current mode switchers includes current ratings from 1.25A to 10A, and switching frequencies from 40kHz to 100kHz as shown in the table below.

Key Features

  • s s s s s s s s.

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LT1432-3.3 3.3V High Efficiency Step-Down Switching Regulator Controller
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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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LT1432 5V High Efficiency Step-Down Switching Regulator Controller FEATURES s s s s s s s s DESCRIPTIO Accurate Preset +5V Output Up to 90% Efficiency Optional Burst Mode for Light Loads Can be Used with Many LTC Switching ICs Accurate Ultra-Low-Loss Current Limit Operates with Inputs from 6V to 30V Shutdown Mode Draws Only 15µA Uses Small 50µH Inductor The LT1432 is a control chip designed to operate with the LT1170/LT1270 family of switching regulators to make a very high efficiency 5V step-down (buck) switching regulator. A minimum of external components is needed. Included is an accurate current limit which uses only 60mV sense voltage and uses “free” PC board trace material for the sense resistor. Logic controlled electronic shutdown mode draws only 15µA battery current.