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LT8613 Datasheet

LT8613 Datasheet

42V, 6A Synchronous Step-Down Regulator with Current Sense and 3μA Quiescent Current
Part No.: LT8613
Page: 26 Pages
Size: 1790 KB
Manufacturer: Linear Technology
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Views: 4
Update Time: 2024-12-04 21:25:44
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LT8613 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8613EUDE#PBF Tube 61 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
LT8613EUDE#TRPBF Reel 2500 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
LT8613EUDE#TRMPBF Reel 500 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
LT8613IUDE#PBF Tube 61 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
LT8613IUDE#TRPBF Reel 2500 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
LT8613IUDE#TRMPBF Reel 500 LGHX 1 28 -40°C ~ 125°C 28-Lead (3mm × 6mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8613 Datasheet(PDF)

LT8613 Datasheet(Picture)

LT8613 Features

  • Rail-to-Rail Current Sense Amplifier with Monitor
  • Wide Input Voltage Range: 3.4V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 3μA IQ Regulating 12VIN to 3.3VOUT
    • Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation:
    • 95% Efficiency at 3A, 5VOUT from 12VIN
    • 94% Efficiency at 3A, 3.3VOUT from 12VIN
  • Fast Minimum Switch-On Time: 40ns
  • Low Dropout Under All Conditions: 250mV at 3A
  • Allows Use of Small Inductors
  • Low EMI
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Current Mode Operation
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 3mm × 6mm 28-Lead QFN Package

LT8613 Applications

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

LT8613 Description

The LT8613 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 3µA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. The built-in current sense amplifier with monitor and control pins allows accurate input or output current regulation and limiting. 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 LT8613 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 LT8613 is available in a small 28-lead 3mm × 6mm QFN package with exposed pad for low thermal resistance.

LT8613 Datasheet Related Parts

Part Number Description
LT8610A Datasheet 42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
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LT8610AC Datasheet 42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
LT8610 Datasheet 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
LT8611 Datasheet 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA and Input/Output Current Limit/Monitor
LT8620 Datasheet 65V, 2.5A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
LT8614 Datasheet 42V, 4A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
LT8612 Datasheet 42V, 6A, 96% Efficiency, 2.2MHz Synchronous MicroPower Step-DownDC/DC Converter with IQ = 2.5µA
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