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LTC3542 Key Features

  • High Peak Switch Current: 1000mA
  • Low Output Ripple (<20mV P-P Typical) Burst Mode Operation: Only 26μA
  • Very Low Quiescent Current: Only 26μA
  • 2.5V to 5.5V Input Voltage Range
  • 2.25MHz Constant Frequency Operation
  • 1MHz to 3MHz External Frequency Synchronization
  • Low Dropout Operation: 100% Duty Cycle
  • No Schottky Diode Required
  • Internal Soft-Start Limits Inrush Current
  • 0.6V Reference Allows Low Output Voltages

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LTC3542 Description

The LTC®3542 is a high efficiency monolithic synchronous buck converter using a constant frequency, current mode architecture. Supply current during operation is only 26μA, dropping to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3542 ideally suited for single Li-Ion battery-powered applications.