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3946

Part Number	3946
Manufacturer	Allegro Micro Systems
Description	Half-bridge Power MOSFET Controller
Published	May 1, 2007
Detailed Description	3946 Half-Bridge Power MOSFET Controller A3946KLB SOIC Data Sheet 29319.150 VREG CP2 CP1 PGND GL S 1 2 3 4 5 6 7 8 1...
Datasheet	3946 PDF File

Overview

3946 Half-Bridge Power MOSFET Controller A3946KLB SOIC Data Sheet 29319.
150 VREG CP2 CP1 PGND GL S 1 2 3 4 5 6 7 8 16 VBB 15 VREF 14 DT 13 LGND 12 RESET 11 IN2 The A3946 is designed speciﬁcally for applications that require high power unidirectional dc motors, three-phase brushless dc motors, or other inductive loads.
The A3946 provides two high-current gate drive outputs that are capable of driving a wide range of power N-channel MOSFETs.
The high-side gate driver switches an N-channel MOSFET that controls current to the load, while the low-side gate driver switches an N-channel MOSFET as a synchronous rectiﬁer.
A bootstrap capacitor provides the above-battery supply voltage required f...

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