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LX1681 - VOLTAGE - MODE PWM CONTROLLERS

Description

The LX1681/1682 are monolithic, pulsewidth modulator controller ICs.

They are designed to implement a flexible, low cost buck (step-down) regulator supply with minimal external components.

The LX1681 is a non-synchronous controller; the LX1682 has a synchronous driver for higher efficiency.

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Full PDF Text Transcription

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LX1681/1682 V O LTA G E - M O D E P W M C O N T R O L L E R S T H E I N F I N I T E P O W E R O F I N N O VA T I O N P R O D U C T I O N D A T A S H E E T DESCRIPTION The LX1681/1682 are monolithic, pulsewidth modulator controller ICs. They are designed to implement a flexible, low cost buck (step-down) regulator supply with minimal external components. The LX1681 is a non-synchronous controller; the LX1682 has a synchronous driver for higher efficiency. The output voltage is adjustable by means of a resistor divider to set the voltage between 1.25V and 4.5V. Short-circuit current limiting can be implemented without expensive current sense resistors.
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