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LTC3541-1 - High Efficiency Buck + VLDO Regulator

General Description

The LTC®3541-1 combines a synchronous buck DC/ DC converter with a very low dropout linear regulator (VLDO) to provide up to two output voltages from a single input voltage with minimal external components.

Key Features

  • nn High Efficiency, 500mA Buck Plus 300mA VLDO™ Regulator nn Auto Start-Up Powers VLDO/Linear Regulator Output Prior to Buck Regulator Output nn Independent High Efficiency, 500mA Buck (VIN: 2.7V to 5.5V) nn 300mA VLDO Regulator with 30mA Standalone Mode nn No External Schottky Diodes Required nn Buck Output Voltage Range: 0.8V to 5V nn VLDO Input Voltage Range (LVIN): 0.9V to 5.5V nn VLDO Output Voltage Range VLDO: 0.4V to 4.1V nn Selectable Fixed Frequency, Pulse-Skip Operation or nn Burst Mod.

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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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LTC3541-1 High Efficiency Buck + VLDO Regulator FEATURES nn High Efficiency, 500mA Buck Plus 300mA VLDO™ Regulator nn Auto Start-Up Powers VLDO/Linear Regulator Output Prior to Buck Regulator Output nn Independent High Efficiency, 500mA Buck (VIN: 2.7V to 5.5V) nn 300mA VLDO Regulator with 30mA Standalone Mode nn No External Schottky Diodes Required nn Buck Output Voltage Range: 0.8V to 5V nn VLDO Input Voltage Range (LVIN): 0.9V to 5.5V nn VLDO Output Voltage Range VLDO: 0.4V to 4.1V nn Selectable Fixed Frequency, Pulse-Skip Operation or nn Burst Mode® Operation nn Short-Circuit Protected nn Current Mode Operation for Excellent Line and Load Transient Response nn Constant Frequency Operation: 2.