Datasheet A4975 (Allegro) - 4

A4975 Full-Bridge PWM Microstepping Motor Driver ELECTRICAL CHARACTERISTICS: Valid at TA = 25°C, VCC = 4.5 to 5.5 V,unless otherwise noted Characteristic Symbol Test Conditions Min. Typ. Max. Unit POWER OUTPUTS
Load Supply Voltage Range VBB Operating 5 – 50 V V Output Leakage Current I OUT = VBB – <1.0 50 µA CEX VOUT = 0 V – <–1.0 –50 µA Output Resistance R Total Sink + Source, IOUT = 1.5 A , DS VBB > 8 V, TJ = 25°C – 1 1.4 Ω I Motor Supply Current (No Load) BB(ON) D0 = D1 = D2 = VIN(1) – 500 700 µA IBB(OFF) D0 = D1 = D2 = VIN(0) – 250 500 µA
CONTROL CIRCUITRY
Logic Supply Voltage Range VCC Operating 4.5 5.0 5.5 V Reference Voltage Range VREF Operating 0.5 – 2.5 V UVLO Enable Threshold VUVLO VCC = 0 → 5 V 3.35 3.7 4.05 V UVLO Hysteresis ∆VUVLO 0.3 0.45 0.6 V I Logic Supply Current CC(ON) D0 = D1 = D2 = VIN(1) – 2.7 – mA ICC(OFF) D0 = D1 = D2 = VIN(0) – 2.7 – mA VIN(1) VCC × 0.55 – – V Logic Input Voltage VIN(0) – – VCC × 0.27 V I Logic Input Current IN(1) VIN = VCC = 5 V – 0 –10 µA IIN(0) VIN = 0 V, VCC = 5 V – –106 –200 µA Slow Current Decay Mode 3.5 – – V Mixed-Decay Comparator Trip Points VPFD Mixed Current Decay Mode 1.1 – 3.1 V Fast Current Decay Mode – – 0.8 V Mixed-Decay Comparator Input Offset Voltage VIO(PFD) – 0 ±50 mV Mixed-Decay Comparator Hysteresis ∆VIO(PFD) 5 25 55 mV Reference Input Current IREF VREF = 0.5 to 2.5 V – – ±5.0 µA Reference Divider Ratio VREF/VS At trip, D0 = D1 = D2 = VIN(1) – 5 – – 1.0 V < V Digital-to-Analog Converter Accuracy* – REF ≤ 2.5 V – – ±3.0 % 0.5 V ≤ VREF ≤ 1.0 V – – ±4.0 % Continued next page… Allegro MicroSystems, LLC 4 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com