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LT8618-3.3 Datasheet

LT8618-3.3 Datasheet

High Efficiency 65V/100mA Synchronous Bucks
Part No.: LT8618-3.3
Page: 28 Pages
Size: 5074 KB
Manufacturer: Linear Technology
Logo:
Views: 3
Update Time: 2024-12-04 21:54:16
DataSheet: Download

LT8618-3.3 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8618EDDB-3.3#TRPBF Reel 2500 LHHW 1 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618EDDB-3.3#TRMPBF Reel 500 LHHW 1 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618IDDB-3.3#TRPBF Reel 2500 LHHW 1 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618IDDB-3.3#TRMPBF Reel 500 LHHW 1 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618JDDB-3.3#TRPBF Reel 2500 LHHW 1 10 -40°C ~ 150°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618JDDB-3.3#TRMPBF Reel 500 LHHW 1 10 -40°C ~ 150°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618EDDB-3.3#WTRPBF Reel 2500 LHHW 3 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618EDDB-3.3#WTRMPBF Reel 500 LHHW 3 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618IDDB-3.3#WTRPBF Reel 2500 LHHW 3 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618IDDB-3.3#WTRMPBF Reel 500 LHHW 3 10 -40°C ~ 125°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618JDDB-3.3#WTRPBF Reel 2500 LHHW 3 10 -40°C ~ 150°C 10-Lead (3mm × 2mm) Plastic DFN  
LT8618JDDB-3.3#WTRMPBF Reel 500 LHHW 3 10 -40°C ~ 150°C 10-Lead (3mm × 2mm) Plastic DFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8618-3.3 Datasheet(PDF)

LT8618-3.3 Datasheet(Picture)

LT8618-3.3 Features

  • High Efficiency Synchronous Operation
    • > 90% Efficiency at 30mA, 12VIN to 3.3VOUT
  • Ultralow Quiescent Current Burst Mode Operation
    • < 2.5μA IQ Regulating 48VIN to 3.3VOUT
    • Output Ripple < 10mVP-P
  • 3.4V to 60V Input Operation Range (65V Max)
  • Fast Minimum Switch-On Time: 35ns
  • Adjustable Switching Frequency: 200kHz to 2.2MHz
  • Fixed 3.3V Output Voltage Version
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • 10-Lead 3mm × 2mm DFN Packages
  • AEC-Q100 Qualified for Automotive Applications

LT8618-3.3 Applications

  • Industrial Sensors
  • Industrial Internet of Things
  • 4mA to 20mA Current Loops
  • Flow Meters
  • Automotive Housekeeping Supplies

LT8618-3.3 Description

The LT8618 family are compact, high speed synchronous monolithic step-down switching regulators that deliver up to 100mA to the output with high efficiency at a constant frequency, even up to 2.2MHz. They accept a wide input voltage range up to 65V (transients only, 60V for continuous operation), and consume only 2.5μA of quiescent current when operating in Burst Mode. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components.

The SYNC/MODE pin selects the regulator’s operation between forced continuous mode, for predictive interference in sampling systems, Burst Mode, for increased efficiency at light loads or spread spectrum for Low EMI. It also allows synchronization to an external clock to further increase signal to noise ratio in high-resolution acquisition systems.

A PG flag signals when VOUT is within ±7.5% of the programmed output voltage and when in fault conditions. Thermal shutdown provides additional protection.

LT8618-3.3 Datasheet Related Parts

Part Number Description
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