Texas Instruments THMC41
the THMC41 provides an open-drain locked rotor detection output signal. These devices also provide a sleep-state mode to eliminate the need for an external power component to disconnect the fan from the supply during a system sleep state or instantly available power down. The THMC40 and THMC41 are primarily intended for cooling fan applications that require RPM speed control and the availability of a tachometer or locked rotor detection signal.| Part No. | THMC41 |
|---|---|
| Datasheet | THMC41 Download |
| Manufacturer |  Texas Instruments |
| Description | Variable Speed 12-VDC Brushless Fan Motor Drivers |
| Buy | Stock & Price |
APPLICATIONS
Requiring Variable RPM to Reduce Noise and/or Increase MTBF D Speed Control Capability With Either DC or PWM Input Signal for Greater System-Level Flexibility D Sleep-State Mode to Eliminate External Fan ON/OFF Power Device – Suited for Cooling Fans in Instantly Available PCs D Thermal Shutdown Protection THMC40 . . . TACH OUTPUT 14-Pin SOP D Package (TOP VIEW) COSC 1 TACH 2 CP 3 VPWR 4 VOUT 5 NC 6 PGND 7 14 VPWM 13 H+ 12 H– 11 PHA 10 PHB 9 AGND 8 NC SLIS097 – MARCH 2000 D High Impedance VPWM Input for Speed Control of Multiple Fans With a Single Signal D Locked Rotor Protection (THMC40, THMC41) With Open-Drain Output Indication (THMC41) D Open-Drain Tachometer Signal Valid Over Entire RPM Range (THMC40) D Noise Immune Signal Conditioning to Allow Use of Low-Cost Hall Effect Position Sensor D Patented High Efficiency Drive Topology With Integrated Low RDS(ON) LDMOS Output Drivers THMC41 . . . RD OUTPUT 14-Pin SOP D Package (TOP VIEW) COSC 1 RD 2 CP 3 VPWR 4 VOUT 5 NC 6 PGN...
