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LT8620 Datasheet

LT8620 Datasheet

65V, 2A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
Part No.: LT8620
Page: 26 Pages
Size: 523 KB
Manufacturer: Linear Technology
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Views: 2
Update Time: 2023-10-23 10:32:27
DataSheet: Download

LT8620 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8620EMSE#PBF Tube 37 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620EMSE#TRPBF Reel 2500 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620EMSE#TRMPBF Reel 500 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620IMSE#PBF Tube 37 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620IMSE#TRPBF Reel 2500 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620IMSE#TRMPBF Reel 500 8620 1 16 -40°C ~ 125°C 16-Lead Plastic MSOP  
LT8620HMSE#PBF Tube 37 8620 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
LT8620HMSE#TRPBF Reel 2500 8620 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
LT8620HMSE#TRMPBF Reel 500 8620 1 16 -40°C ~ 150°C 16-Lead Plastic MSOP  
LT8620MPMSE#PBF Tube 37 8620 1 16 -55°C ~ 150°C 16-Lead Plastic MSOP  
LT8620MPMSE#TRPBF Reel 2500 8620 1 16 -55°C ~ 150°C 16-Lead Plastic MSOP  
LT8620MPMSE#TRMPBF Reel 500 8620 1 16 -55°C ~ 150°C 16-Lead Plastic MSOP  
LT8620EUDD#PBF Tube 73 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
LT8620EUDD#TRPBF Reel 2500 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
LT8620EUDD#TRMPBF Reel 500 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
LT8620IUDD#PBF Tube 73 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
LT8620IUDD#TRPBF Reel 2500 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
LT8620IUDD#TRMPBF Reel 500 LGGV 1 24 -40°C ~ 125°C 24-Lead (3mm × 5mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8620 Datasheet(PDF)

LT8620 Datasheet(Picture)

LT8620 Features

  • Wide Input Voltage Range: 3.4V to 65V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 2.5μA IQ Regulating 12VIN to 3.3VOUT
    •  Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation:
    • 94% Efficiency at 1A, 12VIN to 5VOUT
    • 92% Efficiency at 1A, 12VIN to 3.3VOUT
  • Fast 30ns Minimum Switch-On Time
  • Low Dropout Under All Conditions: 250mV at 1A
  • Safely Tolerates Inductor Saturation in Overload
  • Low EMI
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 16-Lead MSOP and 24-Lead 3mm × 5mm QFN Packages

LT8620 Applications

  • Automotive and Industrial Supplies
  • General Purpose Step-Down
  • GSM Power Supplies

LT8620 Description

The LT8620 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that accepts a wide input voltage range up to 65V, and consumes only 2.5μA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. 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 LT8620 reducing the input supply current to 1μA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions.

The LT8620 is available in small 16-Lead MSOP and 3mm × 5mm QFN packages with exposed pads for low thermal resistance.

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