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LTC3541-3 - High Efficiency Buck + VLDO Regulator

General Description

The LTC®3541-3 combines a synchronous buck DC/DC converter with a very low dropout linear regulator (VLDO™ regulator) and internal feedback resistor networks to provide two output voltages from a single input voltage with minimum 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 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: 1.8V nn VLDO Input Voltage Range (LVIN: 1.675V to 5.5V) nn Fixed VLDO Output Voltage: 1.575V nn Selectable Fixed Frequency, Pulse-Skip Operation or Burst Mode® Operation nn Short-Circuit P.

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Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
LTC3541-2 High Efficiency Buck + VLDO Regulator
LTC3541 synchronous buck DC/DC converter
LTC3542 2.25MHz Synchronous Step-Down DC/DC Converter
LTC3542-1 2.25MHz 2.8V Output Synchronous Step-Down DC/DC Converter
LTC3543 600mA Synchronous Step Down Buck Regulator

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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LTC3541-3 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 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: 1.8V nn VLDO Input Voltage Range (LVIN: 1.675V to 5.5V) nn Fixed VLDO Output Voltage: 1.575V nn Selectable Fixed Frequency, Pulse-Skip Operation 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.