MP6652A

18V, Single-Phase BLDC Fan Driver with Embedded Hall Sensor and MOSFETs

Datasheet

Description

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 (V_IN) 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).

The MP6652A is available in TSOT23-6-SL and TSOT23-6-R packages.

Features & Benefits

On-Chip Hall Sensor
Wide 3V to 18V Operating Input Voltage (V_IN) 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 Pulse-Width Modulation (PWM) Input Frequency Range
Soft-On/Off Phase Commutation
Configurable Output Indication on FG/RD:
- Rotational Speed Indicator (FG)
- Locked Rotor Protection Fault (RD)
Fixed 27kHz Output Switching Frequency (f_SW)
Configurable Speed Reference Soft-Start Time (t_SS)
1x, 0.5x, or 2x Original FG Frequency Output
Recoverable Locked Rotor Protection
Recoverable Thermal Protection
Recoverable Input Over-Voltage Protection (OVP)
Available in TSOT23-6-SL and TSOT23-6-R Packages