DESCRIPTION
The MPQ6631H is a three-phase, brushless DC
(BLDC) motor driver with integrated power
MOSFETs. The device supports a single
external Hall sensor or three external Hall-effect
sensors to drive a three-phase BLDC motor,
with up to 3A of peak phase current and an
input voltage (VIN) range between 3.6V and 35V.
The MPQ6631H controls the motor speed
through the pulse-width modulation (PWM)
signal or the DC signal on the PWM/DC pin with
closed-/open-loop control. The device features
a built-in, configurable speed curve function. It
also features a sinusoidal drive for maximum
torque, as well as low speed ripple and noise
across the full speed range.
The MPQ6631H provides rotational speed
detection. The rotational speed detector (the
FG/RD pin) is an open-drain output. It outputs a
high or low voltage relative to the Hall
comparator’s output. Direction control is
achieved via the DIR pin’s input.
Rich protection features include input overvoltage protection (OVP), under-voltage lockout
(UVLO), locked-rotor protection, over-current
protection (OCP), and thermal shutdown
protection.
The MPQ6631H is available in a TQFN-26
(3mmx4mm) package with wettable flanks. It is
available in AEC-Q100 Grade 1.

FEATURES
• 3.6V to 35V Operating Input Voltage (VIN)
Range
• Up to 3A of Peak Phase Current
• Integrated 160mΩ High-Side MOSFETs
(HS-FETs) and Low-Side MOSFETs (LSFETs)
• Sinusoidal Drive
• Supports a 0V to 1.2V DC Input or 1kHz to
100kHz Pulse-Width Modulation (PWM)
Input
• Supports Triple-Hall or Single-Hall Inputs
• Closed-/Open-Loop Speed Control
• Direction/Brake Input
• Power-Save Mode
• 0.5s/4.5s Lock Protection
• Over-Current Protection (OCP)
• Single-Pulse or Triple-Pulse FG Output per
Electrical Cycle
• FG Signal: Rotational Speed Indication
• Soft Start (SS) for Low Noise and Current
Overshoot
• Available in a TQFN-26 (3mmx4mm)
Package with Wettable Flanks
• Available in AEC-Q100 Grade 1

APPLICATIONS
• Fans
• Automotive Fans
• General Three-Phase Brushless DC (BLDC)
Motors
• Pumps