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LTC3541-2 - High Efficiency Buck + VLDO Regulator

General Description

The LTC®3541-2 combines a synchronous buck DC/ DC converter with a very low dropout linear regulator (VLDOTMregulator) and internal feedback resistor networks to provide 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 Buck Output Prior to VLDO/ Linear Regulator Output nn Independent 500mA High Efficiency Buck (VIN: 2.7V to 5.5V) nn 300mA VLDO Regulator with 30mA Standalone Mode nn No External Schottky Diodes Required nn Fixed Buck Output Voltage: 1.875V nn VLDO Input Voltage Range (LVIN: 1.6V to 5.5V) nn Fixed VLDO Output Voltage: 1.5V nn Selectable Fixed Frequency, Pulse-Skip Operation nn or Burst Mode® Operation nn Short-Circui.

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Full PDF Text Transcription for LTC3541-2 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for LTC3541-2. For precise diagrams, and layout, please refer to the original PDF.

LTC3541-2 High Efficiency Buck + VLDO Regulator FEATURES nn High Efficiency, 500mA Buck Plus 300mA VLDO Regulator nn Auto Start-Up Powers Buck Output Prior to VLDO/ Linea...

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LDO Regulator nn Auto Start-Up Powers Buck Output Prior to VLDO/ Linear Regulator Output nn Independent 500mA High Efficiency Buck (VIN: 2.7V to 5.5V) nn 300mA VLDO Regulator with 30mA Standalone Mode nn No External Schottky Diodes Required nn Fixed Buck Output Voltage: 1.875V nn VLDO Input Voltage Range (LVIN: 1.6V to 5.5V) nn Fixed VLDO Output Voltage: 1.5V nn Selectable Fixed Frequency, Pulse-Skip Operation nn or Burst Mode® Operation nn Short-Circuit Protected nn Current Mode Operation for Excellent Line and Load Transient Response nn Shutdown Current: <3µA nn Constant Frequency Operation: 2.