Rev0.7 May. 29, 2009(LF)

Technology

FS211F

2 PHASE DC MOTOR DRIVE IC

GENERAL DESCRIPTION

The FS211F, 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 0.4A 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, FS211F, 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.

FEATURES

˙1 chip hall sensor/drivers

˙Wide operating voltage range: 4.0V~20V

˙Output sink current up to 0.4A

˙Low quiescent supply current under 5mA

˙Built-in FG output

˙Package: TO-92SP-4

TYPICAL APPLICATION CIRCUIT

C1,C2,R2,R3 is optional for reduce electromagnetism noise. R2,R3 must greater than 50 ohm

TO-92SP-4

FTC

S211

VCC

F

FG output

R1

R2

R3

C1

C2