ABSOLUTE MAXIMUM RATINGS
Load Supply Voltage, VBB .................. 50 V Output Current, IOUT ........................ ±2.0 A Logic Supply Voltage, VDD ................ 7.0 V Input Voltage, VIN .... -0.3 V to VDD + 0.3 V Sense Voltage, VS ............................ 0.5 V Reference Voltage, VREF .................. 2.7 V Package Power Dissipation (TA = 25°C), PD A3958SB ................................. 3.1 W* A3958SLB ............................... 2.2 W* Operating Temperature Range, TA ............................... -20°C to +85°C Junction Temperature, TJ ............................................ +150°C Storage Temperature Range, TS ............................. -55°C to +150°C Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C. * Per SEMI G42-88 Specification. Internal fixed offtime PWM current-control timing circuitry can be programmed via a serial interface to operate in slow, fast, and mixed current-decay modes.
Allegro MicroSystems
