A3940 Datasheet - Allegro

A3940 Full-Bridge Power MOSFET Controller

. 115 Northeast Cutoff, Box 15036 2 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2003 Allegro MicroSystems, Inc. A3940KLP (TSSOP) 3940 FULL-BRIDGE POWER MOSFET CONTROLLER A3940KLW (SOIC) * Measured on “High-K” multi-layer PWB per JEDEC Standard JESD51-7. † Measured on ty.

Data Sheet 29319.100J 3940 A3940KLP (TSSOP with exposed thermal pad) A3940KLW (SOIC) Approx. 2X actual size. ABSOLUTE MAXIMUM RATINGS Load Supply Voltage Range, VBB, VDRAIN, CP1 -0.6 V to +40 V Output Voltage Ranges, LSS -2 V to +6.5 V GHA/GHB, VGHX -2 V to +55 V SA/SB, VSX -2 V to +45 V GLA/GLB, VGLX -2 V to +16 V CA/CB, VCX -0.6 V to +55 V CP2,VCP, VIN -0.6 V to +52 V Logic Input/Output Voltage Range VIN, VOUT -0.3 V to +6.5 V Operating Temperature Range, TA -40°C to +135°C Junct.

A3940 Features

* include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notiﬁcation, and a programmable dead-time adjustment for cross-conduction prevention. The overvoltage trip point is user adjustable. The A3940 is supplied in a choice of two power packages,

A3940 Datasheet (600.09 KB)