MP6652A
18V, Single-Phase BLDC Fan Driver with
Embeded Hall Sensor and MOSFETs
DESCRIPTION
FEATURES
On-Chip Hall Sensor
Wide 3V to 18V Operating Input Voltage
(VIN) Range
Up to 1A Peak Current Limit
Integrated Power MOSFETs: Total 850mΩ
for High-Side MOSFET (HS-FET) and Low-
Side MOSFET (LS-FET)
Configurable Speed Curve
1kHz to 100kHz PWM Input Frequency
Range
Soft-On/Off Phase Commutation
Configurable Output Indictation on FG/RD:
o Rotational Speed Indicator (FG)
o Locked Rotor Protection Fault (RD)
Fixed 27kHz Output Switching Frequency
(fSW)
Configurable Speed Reference Soft-Start
Time
1x, 0.5x, or 2x Original FG Frequency
Output
The MP6652A is a single-phase brushless DC
(BLDC) fan driver with integrated power
MOSFETs and a Hall-effect sensor. It supports
up to 1A of peak current across a wide 3V to
18V input voltage (VIN) range.
The fan speed is controlled by a pulse-width
modulation (PWM) signal applied on the PWM
pin. The MP6652A’s configurable speed curve
makes this device well-suited for cooling fan
applications that require flexible speed curve
control.
The FG/RD pin is an open-drain output that can
be configured for speed detection (FG) or
locked rotor protection (RD). The FG/RD pin
must be pulled up externally.
Rich protections are implemented for robust
operation. These protections include input over-
voltage protection (OVP), under-voltage lockout
(UVLO), locked rotor protection, thermal
shutdown, and over-current protection (OCP).
Recoverable Locked Rotor Protection
Recoverable Thermal Protection
Recoverable Input Over-Voltage Protection
(OVP)
Available in TSOT23-6-SL and TSOT23-6-R
Packages
The MP6652A is available in a TSOT23-6-SL
and a TSOT23-6-R packages.
APPLICATIONS
Cooling Fans
GPU Cooling Fans
CPU Fans for Personal Computers or
Servers
Other Brushless Cooling Fans
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MP6652A Rev. 1.0
6/24/2022
MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
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