3935 Datasheet | Allegro MicroSystems

features include dead-time, VDD undervoltage, and thermal shutdown. The A3935 is supplied in a choice of three packages, a 44-lead PLCC with copper batwing tabs (suffix ED), a 48-lead low profile QFP with exposed thermal pad (suffix JP), and a 36-lead 0.8 mm pitch SOIC (suffix LQ). ABSOLUTE MAXIMUM RATINGS Load Supply Voltages, VBAT, VDRAIN, VBOOST, BOOSTD ... -0.6 V to 40 V Output Voltage Ranges, GHA/GHB/GHC, VGHX .. -4 V to 55 V SA/SB/SC, VSX -4 V to 40 V GLA/GLB/GLC, VGLX .... -4 V to 16 V CA/CB/CC, VCX -0.6 V to 55 V Sense Circuit Voltages, CSP,CSN, LSS -4 V to 6.5 V Logic Supply Voltage, VDD -0.3 V to +6.5 V Logic Input/Outputs and OVSET, BOOSTS, CSOUT, VDSTH -0.3 V to 6.5 V Operating Temperature Range, TA -40°C to +135°C Junction Temperature, TJ +150°C Storage Temperature Range, TS -55°C to +150°C - Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated, but should be avoided. FEATURES ! Drives wide range of n-channel MOSFETs in 3-phase bridges ! PFM boost converter for use with low-voltage battery supplies ! Internal LDO regulator for gate-driver supply ! Bootstrap circuits for high-side gate drivers ! Current monitor output ! Adjustable battery overvoltage detection. ! Diagnostic outputs Motor lead short-to-battery, short-to-ground, and bridge-open protection ! Undervoltage protection ! -40 °C to +150 °C, TJ operation ! Thermal shutdown ! Always order by plete part number, e.g., A3935KLQ . 3935 THREE-PHASE POWER MOSFET CONTROLLER Functional Block Diagram See pages 8 and 9 for terminal assignments and descriptions. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright ©...