LT8607 Datasheet

• Wide Input Voltage Range: 3.0V to 42V
• Ultralow Quiescent Current Burst Mode^® Operation:
  • <3µA I_Q Regulating 12V_IN to 3.3V_OUT
  • Output Ripple <10mV_P-P
• High Efficiency 2MHz Synchronous Operation
  • >93% Efficiency at 0.5A, 12V_IN to 5V_OUT
• 750mA Maximum Continuous Output
• Fast Minimum Switch-On Time: 35ns
• Adjustable and Synchronizable: 200kHz to 2.2MHz
• Allows Use of Small Inductors
• Spread Spectrum Frequency Modulation for Low EMI
• Low Dropout
• Peak Current Mode Operation
• Accurate 1V Enable Pin Threshold
• Internal Compensation
• Output Soft-Start and Tracking
• Small Thermally Enhanced 10-Lead MSOP Package or 8-Lead 2mm × 2mm DFN Package
• AEC-Q100 Qualified for Automotive Applications

• General Purpose Step Down Converter
• Low EMI Step Down

The LT8607 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of non-switching quiescent current. The LT8607 can deliver 750mA of continuous current. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mV_P-P. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program V_IN undervoltage lockout or to shut down the LT8607 reducing the input supply current to 1µA.

The MSOP package includes a SYNC pin to synchronize to an external clock, or to select Burst Mode operation or pulse-skipping with or without spread spectrum; the TR/SS pin programs soft-start or tracking. The DFN package omits these pins and can be purchased in pulse-skipping or Burst Mode operation.