ADI

LT8640AJUDCM-3.3#PBF

3MHz Step-down type Fixed 3.3V 5A QFN-20(3x4) Voltage Regulators - DC DC Switching Regulators RoHS

QFN-20(3x4)ROHS CompliantActive

Manufacturer: ADI
Manufacturer part #: LT8640AJUDCM-3.3#PBF
Store part #: C7459651
Package / case: QFN-20(3x4)
Category: Voltage Regulators - DC DC Switching Regulators
Packaging: Tube-packed

Datasheet (PDF)

Every Order Guarantee

100% Authentic · 30-Day Return or Replacement · policy

5 in stock

#C7459651

Stock & price checked 5 days ago

Quantity	Unit price	Pack price
1+	₹1,103.88	₹1,103.88
10+	₹1,079.03	₹10,790.30
30+	₹1,062.40	₹31,872.00
100+	₹1,045.75	₹1,04,575.00

Quantity (min 1)

1 × ₹1,103.88

₹1,103.88

excl. GST

₹1,302.58 incl. 18% GST

Need volume or a scheduled delivery? Request a quote

Dispatch in 15-18 working days
GST invoice with every order
Standard pack: 182 per tube

LT8640AJUDCM-3.3#PBF

₹1,103.88 for 1 + GST

Need this with the rest of your board? Upload the BOM — we price every line.Upload BOM

Specifications

Operating Temperature: -40℃~+150℃@(TJ)
Frequency - Switching: 3MHz
Function: Step-down type
Number of Outputs: 1
Features: Adjustable soft-start;Output voltage tracking;Frequency synchronization;EMI optimization (spread spectrum);Light load efficient mode;Operating status indication
Topology: Buck
Output Type: Fixed
Operating Voltage: 2.9V~42V
Switch tube (built-in/external): Built-in
Output Voltage: 3.3V
Output Current: 5A
Quiescent Current: 2.5uA

Packaging & compliance

RoHS: ROHS Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tube-packed
Standard pack: 182 / Tube
Sold per: Piece
Minimum order: 1
Unit weight: 0.31 g

Overview

The LT8640A 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 LT8640A 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 forced continuous mode.

Applications

Automotive and Industrial Supplies
General Purpose Step-Down

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, 8A 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
Available in Fixed 3.3V Output
Forced Continuous Mode
Safely Tolerates High Reverse Current
Adjustable and Synchronizable: 200kHz to 3MHz
Peak Current Mode Operation
Output Soft-Start and Tracking
Small 18-Lead 3mm × 4mm Side Solderable QFN with Improved Solder Joint Reliability
AEC-Q100 Qualified for Automotive Applications

Alternatives

Similar parts — check the datasheet before substituting.

Part		Manufacturer	Package	Stock	Price from (excl. GST)	Action
	LT8640AJUDCM-3.3#TRPBF#C7455759ADI · QFN-20(3x4)	ADI	QFN-20(3x4)	On request	₹1,232.20 · 0 in stock	View
	LT8640AJUDCM#PBF#C7459647ADI · QFN-20(3x4)	ADI	QFN-20(3x4)	On request	₹1,483.47 · 0 in stock	View