3973 Datasheet | Allegro MicroSystems

feature will eliminate the need for external clamp diodes in most applications, saving cost and external ponent count, while minimizing power dissipation. Internal circuit protection includes thermal shutdown with hysteresis, transient-suppression diodes, and crossover-current protection. Special power-up sequencing is not required. The A3973SB is supplied in a 24-lead plastic DIP with a copper batwing power tab; the A3973SLB is supplied in a 24-lead plastic SOIC with a copper batwing power tab for surface-mount applications. The power tabs are at ground potential and need no electrical isolation. Data Sheet 29319.34 VCP CP1 CP2 OUT1B LOAD SUPPLY1 GROUND GROUND SENSE1 OUT1A STROBE CLOCK DATA 1 2 3 4 5 6 7 8 9 9 10 11 12 24 23 22 21 20 19 18 17 16 OSC SLEEP VREG OUT2B LOAD SUPPLY2 GROUND GROUND SENSE2 OUT2A LOGIC SUPPLY MUX REF 6-BIT DAC & LOGIC 6-BIT DAC & LOGIC VBB1 VBB2 SERIAL PORT 15 14 13 Dwg. PP-069-3 ABSOLUTE MAXIMUM RATINGS at TA = +25°C Load Supply Voltage, VBB 35 V Output Current, IOUT ±1.0 A Logic Supply Voltage, VDD 7.0 V Logic Input Voltage Range, VIN -0.3 V to VDD + 0.3 V Reference Voltage, VREF 3 V Sense Voltage (dc), VS 500 m V Package Power Dissipation, PD A3973SB 3.1 W A3973SLB 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. FEATURES I I I I I I I I I I I I ±1 A, 35 V Continuous Output Rating Low r DS(on) DMOS Output Drivers...