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LT8640AJUDCM-3.3#PBF - 20 WFQFN

LT8640AJUDCM-3.3#PBF

Active
Analog Devices

42V, 5A/8A PEAK SYNCHRONOUS STEP-DOWN SILENT SWITCHER WITH 2.5ΜA QUIESCENT CURRENT

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Search across all available documentation for this part.

DocumentsDC3099A - Demo Manual (Rev.0)Package Drawing - 20(18)-Lead Plastic Side Wettable QFN (3mm × 4mm)+2
LT8640AJUDCM-3.3#PBF - 20 WFQFN

LT8640AJUDCM-3.3#PBF

Active
Analog Devices

42V, 5A/8A PEAK SYNCHRONOUS STEP-DOWN SILENT SWITCHER WITH 2.5ΜA QUIESCENT CURRENT

Deep-Dive with AI

DocumentsDC3099A - Demo Manual (Rev.0)Package Drawing - 20(18)-Lead Plastic Side Wettable QFN (3mm × 4mm)+2

Technical Specifications

Parameters and characteristics for this part

SpecificationLT8640AJUDCM-3.3#PBF
Current - Output5 A
Frequency - Switching [Max]3 MHz
Frequency - Switching [Min]200 kHz
FunctionStep-Down
Mounting TypeWettable Flank, Surface Mount
Number of Outputs1
Operating Temperature [Max]150 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output Type1.81 mOhm
Package / Case20-WFQFN Exposed Pad, 18 Leads
Supplier Device Package20-QFN (3x4)
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]42 V
Voltage - Input (Min) [Min]2.9 V
Voltage - Output (Min/Fixed)3.3 V

LT8640LT8640-1 Series

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

PartNumber of OutputsTopologySynchronous RectifierSupplier Device PackageCurrent - OutputVoltage - Input (Max) [Max]FunctionOutput TypeVoltage - Input (Min) [Min]Voltage - Output (Max) [Max]Frequency - Switching [Max]Frequency - Switching [Min]Voltage - Output (Min/Fixed) [Min]Mounting TypeOutput ConfigurationOperating Temperature [Max]Operating Temperature [Min]Package / CaseVoltage - Output (Min/Fixed)Output Type
Analog Devices
LT8640HUDC-1#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Positive
150 °C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640JUDCF#PBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Wettable Flank
Positive
125 ¯C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640EUDCF-1#PBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Wettable Flank
Positive
125 ¯C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640EUDC#PBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Positive
125 ¯C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640HUDCF#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Wettable Flank
Positive
150 °C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640HUDC#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Positive
150 °C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640SIV#TRPBF
1
Buck
24-LQFN (4x4)
6 A
42 V
Step-Down
Adjustable
3 V
42 V
3 MHz
200 kHz
0.97 V
Surface Mount
Positive
125 ¯C
-40 °C
24-TFQFN Exposed Pad
Analog Devices
LT8640EUDC#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Positive
125 ¯C
-40 °C
18 Leads
20-WFQFN
Exposed Pad
Analog Devices
LT8640AJUDCM-3.3#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
2.9 V
3 MHz
200 kHz
Surface Mount
Wettable Flank
Positive
150 °C
-40 °C
20-WFQFN Exposed Pad
18 Leads
3.3 V
1.81 mOhm
Analog Devices
LT8640EUDCF-1#TRPBF
1
Buck
20-QFN (3x4)
5 A
42 V
Step-Down
Adjustable
3.4 V
42 V
2 MHz
210 kHz
0.97 V
Surface Mount
Wettable Flank
Positive
125 ¯C
-40 °C
18 Leads
20-WFQFN
Exposed Pad

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTube 1$ 8.26
10$ 5.67
25$ 5.00
100$ 4.26
250$ 3.89
500$ 3.67
1000$ 3.49
2500$ 3.35

Description

General part information

LT8640LT8640-1 Series

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 VINto low VOUTconversion 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).PackageSYNC/MODE ≠ 0VCCOMPH-GRADECLKOUTINTERNAL CAPSLT8640QFNPulse-SkippingInternalYesNoNoLT8640-1QFNFCMInternalYesNoNoLT8640SLQFNFCMInternalNoYesYesLT8643SLQFNFCMExternalNoYesYesLT8640S-2LQFNFCMInternalYesYesNoLT8643S-2LQFNFCMExternalYesYesNoApplicationsAutomotive and Industrial SuppliesGeneral Purpose Step-DownGSM Power Supplies