SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.1 mm
Supply Current-Max (Isup):
1.5 mA
Supply Voltage-Max (Vsup):
18 V
Supply Voltage-Min (Vsup):
4 V
Supply Voltage-Nom (Vsup):
5 V
Surface Mount:
YES
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
0.5 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
3 mm
DRV8421BDGQR Frequently Asked Questions (FAQs)
The maximum voltage rating for the bootstrap capacitor is 30V, as specified in the datasheet. However, it's recommended to choose a capacitor with a voltage rating of at least 35V to ensure reliable operation.
The minimum input capacitance can be calculated using the formula: Cin_min = (Vcc * Icc) / (f_sw * ΔV), where Vcc is the input voltage, Icc is the quiescent current, f_sw is the switching frequency, and ΔV is the allowed input voltage ripple.
The internal pull-down resistors on the ENABLE and FAULT pins are used to ensure that the device is in a safe state during power-up or when the input signals are floating. This helps prevent unintended motor operation or fault conditions.
Yes, the DRV8421BDGQR can be used with a brushed DC motor. However, the motor's current rating should not exceed the device's maximum current rating, and the motor's inductance should be within the device's operating range.
Start by verifying the input voltage, clock signal, and enable signal. Check for proper PCB layout and decoupling. Use an oscilloscope to monitor the device's output signals, such as the gate drive signals and fault indicators. Consult the datasheet and application notes for more detailed guidance.
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DRV8421BDGQR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
