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DRV8821DCAR Datasheet(PDF) 5 Page - Texas Instruments |
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DRV8821DCAR Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 20 page  DRV8821 www.ti.com SLVS912E – JANUARY 2009 – REVISED AUGUST 2010 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT VM Motor power supply voltage range 8 32 V IMOT Continuous motor drive output current(1) 1 1.5 A VREF VREF input voltage 1 4 V (1) Power dissipation and thermal limits must be observed. ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SUPPLIES IVM VM operating supply current VM = 24 V, no loads 5 8 mA IVMSD VM shutdown supply current VM = 24 V, ABENBLn = CDENBLn = 1 2.5 mA VUVLO VM undervoltage lockout voltage VM rising 6.5 8 V VCP Charge pump voltage Relative to VM 12 V VV3P3 VV3P3 output voltage 3.20 3.30 3.40 V LOGIC-LEVEL INPUTS VIL Input low voltage 0.7 V VIH Input high voltage 2 V VHYS Input hysteresis 0.3 0.45 0.6 V Input current IIN VIN = 3.3 V 100 mA (internal pulldown current) OVERTEMPERATURE PROTECTION tTSD Thermal shutdown temperature Die temperature 150 °C MOTOR DRIVER VM = 24 V, IO = 0.8 A, TJ = 25°C 0.25 Motor #1 FET on resistance Rds(on) Ω (each individual FET) VM = 24 V, IO = 0.8 A, TJ = 85°C 0.31 0.37 VM = 24 V, IO = 0.8 A, TJ = 25°C 0.30 Motor #2 FET on resistance Rds(on) Ω (each individual FET) VM = 24 V, IO = 0.8 A, TJ = 85°C 0.38 0.45 IOFF Off-state leakage current ±12 mA fPWM Motor PWM frequency(1) 45 50 55 kHz tBLANK ITRIP blanking time(2) 3.75 ms tF Output fall time 50 300 ns tR Output rise time 50 300 ns IOCP Overcurrent protect level 1.5 3 4.5 A tOCP Overcurrent protect trip time 2.5 ms tMD Mixed decay percentage Measured from beginning of PWM cycle 75 % VREF INPUT/CURRENT CONTROL ACCURACY IREF xVREF input current xVREF = 3.3 V –3 3 mA xVREF = 2.5 V, derived from V3P3; –5 5 % 71% to 100% current ΔICHOP Chopping current accuracy xVREF = 2.5 V, derived from V3P3; –10 10 % 20% to 56% current (1) Factory option 100 kHz. (2) Factory options for 2.5 ms, 5 ms or 6.25 ms. Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): DRV8821 |
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