Description:AEC-Q100 qualified
• Speed curve configuration via EEPROM
• I2C serial port
• Sinusoidal modulation for reduced audible noise and
low vibration
• Sensorless (no Hall sensors required)
• Low RDS(ON) power MOSFETs
• 3.3 V / 20 mA linear regulator
• PWM or analog speed input
• FG speed output
• Slew rate control
• Lock detection
• Soft start
• Low power standby mode
• Overcurrent protection
• Overvoltage protection
SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Screening Level:
AEC-Q100
Seated Height-Max:
1.2 mm
Supply Current-Max (Isup):
15 mA
Supply Voltage-Max (Vsup):
40 V
Supply Voltage-Min (Vsup):
4 V
Supply Voltage-Nom (Vsup):
8 V
Surface Mount:
YES
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Width:
4.4 mm
A5947KLPTR-B-T Frequently Asked Questions (FAQs)
A good PCB layout for the A5947KLPTR-B-T involves keeping the device as close to the motor as possible, using a solid ground plane, and minimizing the length of the motor leads. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
The sense resistor value depends on the motor current and the desired current sense accuracy. A good starting point is to choose a sense resistor value that results in a voltage drop of around 50-100 mV at the maximum motor current. The datasheet provides a formula to calculate the sense resistor value based on the motor current and desired accuracy.
The A5947KLPTR-B-T has an operating temperature range of -40°C to 150°C. However, the device can be derated for operation above 125°C. It's essential to ensure that the device is properly cooled and that the maximum junction temperature is not exceeded.
To troubleshoot issues with the A5947KLPTR-B-T, start by checking the power supply voltage, motor connections, and sense resistor values. Verify that the device is properly configured and that the motor is properly connected. Use an oscilloscope to monitor the device's output and input signals. Consult the datasheet and application notes for troubleshooting guidelines and FAQs.
The A5947KLPTR-B-T is designed for use with 3-phase brushless DC motors. However, it can be used with other motor types or configurations with proper modifications to the device's configuration and motor control algorithms. Consult the datasheet and application notes for guidance on using the device with different motor types or configurations.
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A5947KLPTR-B-T Overview
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