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LT8608B Datasheet

LT8608B Datasheet

42V, 1.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
Part No.: LT8608B
Page: 24 Pages
Size: 1810 KB
Manufacturer: Linear Technology
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Views: 2
Update Time: 2025-01-03 09:47:32
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LT8608B Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8608BEDC#TRPBF Reel 2500 LGXC 1 8 -40°C ~ 125°C 8-Lead (2mm × 2mm) Plastic DFN  
LT8608BEDC#TRMPBF Reel 500 LGXC 1 8 -40°C ~ 125°C 8-Lead (2mm × 2mm) Plastic DFN  
LT8608BIDC#TRPBF Reel 2500 LGXC 1 8 -40°C ~ 125°C 8-Lead (2mm × 2mm) Plastic DFN  
LT8608BIDC#TRMPBF Reel 500 LGXC 1 8 -40°C ~ 125°C 8-Lead (2mm × 2mm) Plastic DFN  
LT8608BHDC#TRPBF Reel 2500 LGXC 1 8 -40°C ~ 150°C 8-Lead (2mm × 2mm) Plastic DFN  
LT8608BHDC#TRMPBF Reel 500 LGXC 1 8 -40°C ~ 150°C 8-Lead (2mm × 2mm) Plastic DFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8608B Datasheet(PDF)

LT8608B Datasheet(Picture)

LT8608B Features

  • Wide Input Voltage Range: 3.0V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • <2.5μA IQ Regulating 12VIN to 3.3VOUT
    • Output Ripple <10mVP-P
  • High Efficiency 2MHz Synchronous Operation:
    • >92% Efficiency at 0.5A, 5VOUT from 12VIN
  • 1.5A Continuous Output Current
  • Fast Minimum Switch-On Time: 35ns
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Spread Spectrum Frequency Modulation for Low EMI
  • Allows Use of Small Inductors
  • Low Dropout
  • Peak Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small 10-Lead MSOP Package or 8-Lead 2mm × 2mm DFN Package
  • AEC-Q100 Qualified for Automotive Applications

LT8608B Applications

  • General Purpose Step Down
  • Low EMI Step Down

LT8608B Description

The LT8608B is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of quiescent current. The LT8608B can deliver 1.5A of continuous current. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mV. 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 VIN undervoltage lockout or to shut down the LT8608B. The PG flag signals when VOUT is within ±8.5% of the programmed output voltage as well as fault conditions.

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 varieties.

LT8608B Related Parts

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