Datasheet ACS780xLR (Allegro) - 5

High-Precision Linear Hall-Effect-Based ACS780xLR Current Sensor IC With 200 µΩ Current Conductor COMMON OPERATING CHARACTERISTICS [1] valid at TOP = –40°C to 150°C and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Unit
Supply Voltage VCC 4.5 5.0 5.5 V Supply Current ICC Output open – 11 15 mA Power-On Time tPO TA = 25°C, CBYPASS = Open, CL = 1 nF – 130 – µs Undervoltage Lockout (UVLO) VUVLOH TA = 25°C, VCC rising and device function enabled – 4 – V Threshold VUVLOL TA = 25°C, VCC falling and device function disabled – 3.5 – V t TA = 25°C, CBYPASS = Open, CL = 1 nF, VCC UVLO Enable/Disable Delay UVLOE Fall Time (5 V to 3 V) = 1.5 µs – 64 – µs Time t TA = 25°C, CBYPASS = Open, CL = 1 nF, UVLOD VCC Recover Time (3 V to 5 V) = 1.5 µs – 7 – µs V Power-On Reset Voltage PORH TA = 25°C, VCC rising – 2.9 – V VPORL TA = 25°C, VCC falling – 2.5 – V Power-On Reset Release Time tPORR TA = 25°C, VCC rising – 64 – µs Supply Zener Clamp Voltage Vz TA = 25°C, ICC = 30 mA 6.5 7.5 – V Internal Bandwidth BWi Small signal –3 dB, CL = 1 nF, TA = 25°C – 120 – kHz Chopping Frequency fC TA = 25°C – 500 – kHz Oscillator Frequency fOSC TA = 25°C – 8 – MHz
OUTPUT CHARACTERISTICS
Propagation Delay Time tpd TA = 25°C, CL = 1 nF – 2.5 – µs Rise Time tr TA = 25°C, CL = 1 nF – 3 – µs Response Time tRESPONSE TA = 25°C, CL = 1 nF – 3.6 – µs V Output Saturation Voltage SAT(HIGH) TA = 25°C, RLOAD = 10 kΩ to GND 4.7 – – V VSAT(LOW) TA = 25°C, RLOAD = 10 kΩ to VCC – – 400 mV DC Output Resistance ROUT RL =4.7 kΩ from VOUT to GND, VOUT = VCC / 2 – <1 – Ω R Output Load Resistance L(PULLUP) VOUT to VCC 4.7 – – kΩ RL(PULLDWN) VOUT to GND 4.7 – – kΩ Output Load Capacitance CL VOUT to GND – 1 10 nF Primary Conductor Resistance RPRIMARY TA = 25°C – 200 – µΩ V Quiescent Output Voltage OUT(QBI) IP = 0 A, TA = 25°C – VCC/2 – V VOUT(QU) Unidirectional variant, IP = 0 A, TA = 25°C – VCC × 0.1 – V Ratiometry Quiescent Output Voltage Error RatERRVOUT(Q) Through supply voltage range (relative to VCC = 5 V) – 0 – % Ratiometry Sensitivity Error RatERRSens Through supply voltage range (relative to VCC = 5 V) – < ±0.5 – % Common-Mode Magnetic Field Rejection CMFR Magnetic field perpendicular to Hall plates – –35 – dB [1] Device is factory-trimmed at 5 V, for optimal accuracy. Allegro MicroSystems, LLC 5 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com