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ADI LT8640SHV-2#PBF product image
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ADI LT8640SHV-2#PBFRoHS

Manufacturer
ADI
MPN
LT8640SHV-2#PBF
LCSC Part #
C674125
Packaging
QFN-24-EP(4x4)
Customer #
Key Attributes
42V, 6A Synchronous Step-Down Silent Switcher with 2.5uA Quiescent Current
Datasheetpdf iconADI LT8640SHV-2#PBF
In-Stock: 29
29 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 12.5716$ 11.0631$ 11.06
10+$ 12.3981$ 10.9104$ 109.10
30+$ 12.0965$ 10.6450$ 319.35
100+$ 11.8338$ 10.4138$ 1041.38
Standard Packaging540/Full Tray
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingQFN-24-EP(4x4)
Operating Temperature-40℃~+150℃@(TJ)
Frequency - Switching200kHz~3MHz
FunctionStep-down type
Number of Outputs1
FeaturesEMI optimization (spread spectrum);Light load efficient mode;Frequency synchronization;Adjustable soft-start;Output voltage tracking;External compensation;Operating status indication
Output TypeAdjustable
TopologyBuck
Operating Voltage3.4V~42V
Switch tube (built-in/external)Built-in
Output Current6A
Output Voltage-
Quiescent Current2.5uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging540
Sales UnitPiece

Introduction

AI Translation

The LT8640S-2/LT8643S-2 synchronous step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. Peak current mode control with a 30ns minimum on-time allows high step-down ratios even at high switching frequencies. The LT8643S-2 has external compensation to enable current sharing and fast transient response at high switching frequencies. Burst Mode operation enables ultralow standby current consumption, forced continuous mode can control frequency harmonics across the entire output load range, or spread spectrum operation can further reduce EMI emissions.

Features

AI Translation
  • Silent Switcher Architecture
  • Ultralow EMI Emissions Optional Spread Spectrum Modulation
  • High Efficiency at High Frequency
  • Up to 96% Efficiency at 1MHz, 12VIN to 5VOUT
  • Up to 95% Efficiency at 2MHz, 12VIN to 5VOUT
  • Wide Input Voltage Range: 3.4V to 42V
  • 6A Maximum Continuous, 7A Peak Output
  • Ultralow Quiescent Current Burst Mode Operation 2.5µA h0 Regulating 12VIN to 3.3VOUT (LT8640S-2)
  • Output Ripple < 10mVP-P
  • External Compensation: Fast Transient Response and Current Sharing (LT8643S-2)
  • Fast Minimum Switch On-Time: 30ns
  • Low Dropout Under All Conditions: 100mV at 1A
  • Forced Continuous Mode
  • Adjustable and Synchronizable: 200kHz to 3MHz
  • Output Soft-Start and Tracking
  • Small 24-Lead 4mm × 4mm LQFN Package
  • AEC-Q100 Qualified for Automotive Applications

Applications

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