ADI

LT8640IUDC#PBF

200kHz~3MHz Step-down type Fixed 5A 5V QFN-20(3x4) Voltage Regulators - DC DC Switching Regulators RoHS

QFN-20(3x4)ROHS3 CompliantActive

42V, 5A Synchronous Step-Down Silent Switcher with 2.5uA Quiescent Current

Manufacturer: ADI
Manufacturer part #: LT8640IUDC#PBF
Store part #: C580330
Package / case: QFN-20(3x4)
Category: Voltage Regulators - DC DC Switching Regulators
Packaging: Tube-packed

Datasheet (PDF)

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3 in stock

#C580330

Stock & price checked 3 days ago

Quantity	Unit price	Pack price
1+	₹2,258.27	₹2,258.27
10+	₹2,189.83	₹21,898.30

Quantity (min 1)

1 × ₹2,258.27

₹2,258.27

excl. GST

₹2,664.76 incl. 18% GST

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Standard pack: 91 per tube

LT8640IUDC#PBF

₹2,258.27 for 1 + GST

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Specifications

Operating Temperature: -40℃~+125℃
Frequency - Switching: 200kHz~3MHz
Function: Step-down type
Number of Outputs: 1
Features: Adjustable soft-start;Frequency synchronization;EMI optimization (spread spectrum);Light load efficient mode;Output voltage tracking;Operating status indication
Output Type: Fixed
Topology: Buck
Operating Voltage: 3.4V~42V
Switch tube (built-in/external): Built-in
Output Current: 5A
Output Voltage: 5V
Quiescent Current: 2.5uA

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tube-packed
Standard pack: 91 / Tube
Sold per: Piece
Minimum order: 1
Unit weight: 0.08 g

Overview

The LT8640/LT8640-1 step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents. The LT8640/LT8640-1 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 30ns. The SYNC/MODE pin selects between Burst Mode operation, spread spectrum mode, synchronization to an external clock, and either pulse-skipping (LT8640) or forced continuous mode (LT8640-1).

Applications

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

Key features

Silent Switcher Architecture
Ultralow EMI Emissions Spread Spectrum Frequency 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
5A Maximum Continuous Output, 7A 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: 30ns
Low Dropout Under All Conditions: 100mV at 1A
Forced Continuous Mode (LT8640-1 Only)
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 × 4mm QFN and Side Wettable QFN
AEC-Q100 Qualified for Automotive Applications