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DRV8846 Datasheet(PDF) 5 Page - Texas Instruments |
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DRV8846 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 35 page DRV8846 www.ti.com SLLSEK2 – JUNE 2014 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature referenced with respect to GND (unless otherwise noted) (1) MIN MAX UNIT Power supply voltage (VM) –0.3 20 V Power supply voltage ramp rate (VM) 0 2 V/µs Internal regulator voltage (VINT) –0.3 3.6 V Analog input pin voltage (VREF) –0.3 3.6 V Control pin voltage (nENABLE, STEP, DIR, I0, I1, M0, M1, DEC0, DEC1, TOFF_SEL, nSLEEP, –0.3 7.0 V nFAULT, ADEC) Continuous phase node pin voltage (AOUT1, AOUT2, BOUT1, BOUT2) –0.3 VM + 0.6 V Continuous shunt amplifier input pin voltage (AISEN, BISEN)(2) –0.6 0.6 V Peak drive current (AOUT1, AOUT2, BOUT1, BOUT2, AISEN, BISEN) Internally limited A TJ Operating junction temperature –40 150 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) Transients of ±1 V for less than 25 ns are acceptable. 7.2 Handling Ratings MIN MAX UNIT Tstg Storage temperature range –65 150 °C Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) –4 4 Electrostatic V(ESD) kV discharge Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) –1.5 1.5 (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VM Power supply voltage range(1) 4 18 V VREF Reference rms voltage range(2) 1 3.3 V ƒPWM Applied STEP signal 0 250 kHz IVINT VINT external load current 1 mA Irms Motor rms current per H-bridge(3) 0 1 A TA Operating ambient temperature –40 85 °C (1) Note that RDS(ON) increases and maximum output current is reduced at VM supply voltages below 5 V (2) Operational at VREF between 0 to 1 V, but accuracy is degraded (3) Power dissipation and thermal limits must be observed 7.4 Thermal Information DRV8846 THERMAL METRIC(1) QFN UNIT 24 PINS RθJA Junction-to-ambient thermal resistance 34 RθJC(top) Junction-to-case (top) thermal resistance 36.9 RθJB Junction-to-board thermal resistance 12.5 °C/W ψJT Junction-to-top characterization parameter 0.4 ψJB Junction-to-board characterization parameter 12.5 RθJC(bot) Junction-to-case (bottom) thermal resistance 2.5 (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: DRV8846 |
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