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LT8643SIV#PBF - 24-LQFN

LT8643SIV#PBF

Active
Analog Devices

CONV DC-DC 3.4V TO 42V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.97V TO 41.58V 6A 24-PIN LQFN EP TRAY

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Search across all available documentation for this part.

DocumentsLT8640S/LT8643S: 42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5μA Quiescent Current Data Sheet (Rev.D)DN1049: 42V, 6A (7A Peak) High Efficient Step-Down Regulators with Ultralow EMI Emissions+2
LT8643SIV#PBF - 24-LQFN

LT8643SIV#PBF

Active
Analog Devices

CONV DC-DC 3.4V TO 42V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.97V TO 41.58V 6A 24-PIN LQFN EP TRAY

Deep-Dive with AI

DocumentsLT8640S/LT8643S: 42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5μA Quiescent Current Data Sheet (Rev.D)DN1049: 42V, 6A (7A Peak) High Efficient Step-Down Regulators with Ultralow EMI Emissions+2

Technical Specifications

Parameters and characteristics for this part

SpecificationLT8643SIV#PBF
Current - Output6 A
Frequency - Switching [Max]3 MHz
Frequency - Switching [Min]200 kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]125 ¯C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / Case24-TFQFN Exposed Pad
Supplier Device Package24-LQFN (4x4)
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]42 V
Voltage - Input (Min) [Min]3.4 V
Voltage - Output (Max) [Max]42 V
Voltage - Output (Min/Fixed) [Min]0.97 V

Pricing

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

DistributorPackageQuantity$
ArrowN/A 1$ 10.37
10$ 8.85
DigikeyTray 1$ 15.43
10$ 11.02
25$ 9.89
80$ 8.80
230$ 8.07
440$ 7.71
945$ 7.52

Description

General part information

LT8643S/LT8643SA Series

TheLT®8640S/LT8643S/LT8640SA/LT8643SA synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize all the fast current loops inside and make it easy to achieve advertised EMI performance by reducing layout sensitivity. This performance makes the LT8640S/LT8643S/LT8640SA/LT8643SA ideal for noise-sensitive applications and environments.Peak current mode control with a 30ns minimum on-time allows high step-down ratios even at high switching frequencies. The LT8643S/LT8643SA 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 spreadspectrum operation can further reduce EMI emissions.ApplicationsAutomotive and Industrial Supplies