Speed Measurement
Revolution Counting
Dual coils Brush-less DC Fan
APPLICATIONSDual coils Brush-less DC Motor
l Package: TO-94
l Built-in FG output
l Low quiescent supply current under 5mA
l Output sink current up to 0.25A
l Wide operating voltage range: 4.5V~20V
FEATURESl 1-chip hall sensor/drivers
The SDC211,a 1-chip composed of hall sensor and output coil drivers, applied to 2-phase DC motor. The high sensitivity of Hall effect sensor is suitable for motors from mini-type CPU coolers to blowers and DC fans. Typical operation current is 0.25A and operating voltage range is wide. FG signal, an open collector, provides a square waveform output for the detection of the motor speed.Using few external components, SDC211, a high performance integrated IC, is designed for a 2-phase DC motor circuit. The circuit diagram of the typical application example is as below.
GENERAL DESCRIPTION
The SDC211,a 1-chip composed of hall sensor and output coil drivers, applied to 2-phase DC motor. |
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