LCSC Electronics logoLCSC Electronics svg logo
Sign In
USD
Cart
6% OFF
ADI LT8641IUDC#PBF product image
  • LT8641IUDC#PBF thumbnail 1
  • LT8641IUDC#PBF thumbnail 2
  • LT8641IUDC#PBF thumbnail 3
  • Pinout
  • Footprint
Images for reference only

ADI LT8641IUDC#PBFRoHS

Manufacturer
ADI
MPN
LT8641IUDC#PBF
LCSC Part #
C190081
Packaging
QFN-18(3x4)
Customer #
Key Attributes
65V, 3.5A synchronous buck silent switch
Datasheetpdf iconADI LT8641IUDC#PBF
In-Stock: 26
26 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 14.1656$ 13.3157$ 13.32
10+$ 12.4181$ 11.6731$ 116.73
30+$ 10.2162$ 9.6033$ 288.10
91+$ 9.3221$ 8.7628$ 797.41
Standard Packaging91/Full Tube
Better price for more quantity?
$

Products Specifications

Show similar products (0) >
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingQFN-18(3x4)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching2MHz
FunctionStep-down type
Number of Outputs1
FeaturesAdjustable soft-start;Output voltage tracking;Frequency synchronization;EMI optimization (spread spectrum);Light load efficient mode;Operating status indication
Output TypeAdjustable
TopologyBuck
Operating Voltage3V~65V
Switch tube (built-in/external)Built-in
Output Current3.5A
Output Voltage800mV~64.35V
Quiescent Current2.5uA
Report an ErrorShow similar products (0) >

Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging91
Sales UnitPiece

Introduction

AI Translation

The LT8641 step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in 3mm x 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with a minimal PCB footprint. An ultralow 2.5μA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents. Transient response remains excellent and output voltage ripple is below 10mVₚ₋ₚ at any load, from zero to full current. The LT8641 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 35ns. Operation is safe in overload even with a saturated inductor. Essential features are included and easy to use: An open-drain PG pin signals when the output is in regulation. The SYNC/MODE pin selects between Burst Mode, pulse-skipping, or spread spectrum mode, and also allows synchronization to an external clock. Soft-start and tracking functionality is accessed via the TR/SS pin. An accurate enable threshold can be set using the EN/UV pin and a resistor at the RT pin programs switch frequency.

Features

AI Translation
  • Silent Switcher architecture, Ultralow EMI emissions, Spread Spectrum Frequency Modulation
  • High Efficiency at High Frequency: Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT; Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT
  • Wide Input Voltage Range: 3V to 65V
  • 3.5A Maximum Continuous Output, 5A Peak Transient Output
  • Ultralow Quiescent Current, Burst Mode Operation: 2.5μA IO regulating 12VIN to 3.3VOUT, Output Ripple < 10mVₚ₋ₚ
  • Fast Minimum Switch On-Time: 35ns
  • Low Dropout Under All Conditions: 130mV at 1A
  • Safely Tolerates Inductor Saturation in Overload
  • Adjustable and Synchronizable: 200kHz to 3MHz
  • Peak Current Mode Operation
  • Output Soft-Start and Tracking
  • Small 18-Lead 3mm x 4mm QFN

Applications

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