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DRV8837CDSGR Datasheet(PDF) 11 Page - Texas Instruments |
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DRV8837CDSGR Datasheet(HTML) 11 Page - Texas Instruments |
11 / 21 page VM OUT1 OUT2 GND VCC nSLEEP IN1 IN2 8 7 6 5 1 2 3 4 DRV8837C M VCC 0.1 µF VM 0.1 µF Copyright © 2016, Texas Instruments Incorporated 11 DRV8837C www.ti.com SLVSD61A – JULY 2016 – REVISED JULY 2016 Product Folder Links: DRV8837C Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The DRV8837C device is device is used to drive one DC motor or other devices like solenoids. The following design procedure can be used to configure the DRV8837C device. 8.2 Typical Application Figure 7. Schematic of DRV8837C Application 8.2.1 Design Requirements Table 4 lists the required parameters for a typical usage case. Table 4. System Design Requirements DESIGN PARAMETER REFERENCE EXAMPLE VALUE Motor supply voltage VM 9 V Logic supply voltage VCC 3.3 V Target RMS current IOUT 0.8 A 8.2.2 Detailed Design Procedure 8.2.2.1 Motor Voltage The appropriate motor voltage depends on the ratings of the motor selected and the desired RPM. A higher voltage spins a brushed dc motor faster with the same PWM duty cycle applied to the power FETs. A higher voltage also increases the rate of current change through the inductive motor windings. 8.2.2.2 Low-Power Operation When entering sleep mode, TI recommends setting all inputs as a logic low to minimize system power. |
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