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3974 Datasheet(PDF) 3 Page - Allegro MicroSystems |
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3974 Datasheet(HTML) 3 Page - Allegro MicroSystems |
3 / 12 page 3974 DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER 3 www.allegromicro.com ELECTRICAL CHARACTERISTICS at T A = +25°C, VBB = 50 V, VDD = 5.0 V, fPWM < 50 kHz (unless otherwise noted). Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Output Drivers Load Supply Voltage Range V BB Operating 15 — 50 V During sleep mode 0 — 50 V Output Leakage Current I DSS V OUT = VBB — <1.0 20 µA V OUT = 0 V — <-1.0 -20 µA Output ON Resistance r DS(on) Source driver, I OUT = -1.5 A — 0.5 0.55 Ω Sink driver, I OUT = 1.5 A — 0.315 0.35 Ω Body Diode Forward Voltage V F Source diode, I F = 1.5 A — — 1.2 V Sink diode, I F = 1.5 A — — 1.2 V Load Supply Current I BB f PWM < 50 kHz — 4.0 7.0 mA Charge pump on, outputs disabled — 2.0 5.0 mA Sleep or idle mode — — 20 µA Control Logic Logic Supply Voltage Range V DD Operating 4.5 5.0 5.5 V Logic Input Voltage V IN(1) 2.0 — — V V IN(0) — — 0.8 V Logic Input Current I IN(1) V IN = 2.0 V — <1.0 ±20 µA (except ENABLE) I IN(0) V IN = 0.8 V — <1.0 ±20 µA ENABLE Input Current I EN(1) V EN = 2.0 V — 40 100 µA I EN(0) V EN = 0.8 V — 16 30 µA OSC Input Frequency f OSC 2.9 — 6.1 MHz OSC Input Duty Cycle — 40 — 60 % OSC Input Hysterisis ∆V IN 200 — 400 mV Reference Input Voltage Range V REF Operating 0 — 2.6 V continued next page ... |
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