FD212 SITI [Silicon Touch Technology Inc.], FD212 Datasheet - Page 5

• Manufacturer Part Number: FD212
• Description: Single Coil Brushless DC Motor Drivers Built-in Hall Sensor ( 2 to 5.5 Volts )
• Manufacturer: SITI [Silicon Touch Technology Inc.]

Block Diagram & Application Circuit
Application Notes
SP-FD212-A.003
500
450
400
350
300
250
200
150
100
There is no requirement of the bypass capacitor or Zener Diode between VDD
and GND in normal applications. The connection of this capacitor or Zener Diode
will increase stability of operation, if required.
The FG pin is an open-drained output. The output frequency is corresponding to
the rotation speed sensed by the built-in Hall effect position sensor. With suitable
output pull-up, the fan tachometer output can be used directly with bipolar or
MOS logic for motor speed monitoring/control.
The power dissipated by the IC varies widely with the supply voltage, the output
current, and loading. It is important to ensure the application does not exceed
the allowable power dissipation of the IC package. The recommended motor
driver power dissipation versus temperature of SOT25 and LFCSP8 are depicted
as follows:
50
0
0
Power Dissipation-Temperature (SOT25)
25
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
Ambient Temperature ( ℃ )
50
75
VDD
GND
100
Power
HALL
IC
125
Version
150
LOCK DETECTION
GENERATOR
BLOCK
TACHO
LOGIC
：
POWER
A.003
800
700
600
500
400
300
200
100
0
0
Power Dissipation-Temperature (LFCSP8)
DRIVERS
25
+
-
Ambient Temperature ( ℃ )
50
FG
O1
O2
75
FG
100
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FD212
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