LT8641EUDC#PBF

200kHz~3MHz Step-down type Adjustable 3.5A QFN-18(3x4) Voltage Regulators - DC DC Switching Regulators RoHS

QFN-18(3x4)ROHS3 CompliantActive

65V, 3.5A Synchronous Step-Down Silent Switcher with 2.5uA Quiescent Current

Manufacturer: ADI
Manufacturer part #: LT8641EUDC#PBF
Store part #: C674128
Package / case: QFN-18(3x4)
Category: Voltage Regulators - DC DC Switching Regulators
Packaging: Tube-packed

Datasheet (PDF)

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6 in stock

#C674128

Stock & price checked 46 h ago

Quantity	Unit price	Pack price
1+	₹1,321.39	₹1,321.39
10+	₹1,141.03	₹11,410.30
30+	₹1,031.08	₹30,932.40
100+	₹938.72	₹93,872.00

Quantity (min 1)

1 × ₹1,321.39

₹1,321.39

excl. GST

₹1,559.24 incl. 18% GST

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Standard pack: 91 per tube

LT8641EUDC#PBF

₹1,321.39 for 1 + GST

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Specifications

Operating Temperature: -40℃~+125℃@(TJ)
Frequency - Switching: 200kHz~3MHz
Function: Step-down type
Number of Outputs: 1
Features: EMI optimization (spread spectrum);Frequency synchronization;Light load efficient mode;Adjustable soft-start;Output voltage tracking;Operating status indication
Output Type: Adjustable
Topology: Buck
Operating Voltage: 3V~65V
Switch tube (built-in/external): Built-in
Output Current: 3.5A
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: 0.171 g

Overview

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 a 3mm × 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 ontime of 35ns. Operation is safe in overload even with a saturated inductor. Essential features are included and easy to use: An opendrain PG pin signals when the output is in regulation. The SYNC/MODE pin selects between Burst Mode, pulseskipping, 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.

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 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 I0 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 × 4mm QFN
AEC-Q100 Qualified for Automotive Applications