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11-FD212
Version : A.003 Issue Date : 2007/01/08 File Name : SP-11FD212-A.003.doc Total Pages: 8
Single Coil Brushless DC Motor Drivers Built-in Hall Sensor ( 2 to 5.5 Volts )
9 7 1 SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Rd I, Science-Based Industrial Park Hsinchu, Taiwan, R.O.C. Tel886-3-5645656 Fax886-3-5645626
SILICON TOUCH TECHNOLOGY INC.
FD212
11-FD212 Single Coil Brushless DC Motor Drivers Built-in Hall Sensor ( 2 to 5.5 Volts)
General Specifications
The device is designed specifically for electronic commutation of single coil DC motor applications. Each device includes a HALL sensor, a frequency generator output, a lock detection circuit to shut down the drivers for overheat prevention, and complementary bi-directional drivers for driving and sinking large load on a single silicon chip. If the motor rotation is stalled by external force or obstacles, overdrive current ( or lock current ) may incur coil overheat/burning. To prevent coil overheat/burning, these devices incorporate lock detection circuit to shut down the drivers. After the motor locking is released, the drivers can be powered up using an automatic self-restart circuit. The drivers are shut down roughly 1 to 3 seconds after the motor is locked. After the drivers are shut down, the automatic self-restart circuit will try to power up the drivers every 1 to 3 seconds.
SP-FD212-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
FD212
Pin Description
(LFCSP8)
NC NC VDD NC
FG O2 GND O1
PIN NO. 1 2 3 4
PIN NAME NC NC VDD NC
DESCRIPTION No connection No connection Power supply pin No connection
PIN NO. 5 6 7 8
PIN NAME O1 GND O2 FG
DESCRIPTION Output driving/sinking pin 1 Ground pin Output driving/sinking pin 2 Frequency generator output
(SOT-25)
PIN NO. PIN NAME DESCRIPTION Output driving/sinking pin 2 Power supply pin Frequency generator output Ground pin Output driving/sinking pin 1
O2
O1 GND
1 2 3 4 5
O2 VDD FG GND O1
VDD
FG
Features and Benefits
Optimized for single coil Brushless DC Motor applications Built-in Hall effect sensor Built-in Reverse Protection Frequency generator output Lock detection and automatic self-restart without external capacitor High output sinking and driving capability Ultra-thin, small and highly reliable package (LFCSP8,SOT-25)
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VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
FD212
Absolute Maximum Ratings ( Unless otherwise noted, TA = 25 C )
Characteristic Supply Voltage Input Voltage from a Hall Effect Latch Output Output Current Maximum Power Dissipation of LFCSP8 Thermal Resistance LFCSP8 Maximum Power Dissipation of SOT25 Thermal Resistance SOT25 Operating Temperature Range Storage Temperature Range Symbol VDD VIN IOUT PD1,max JA1 PD2,max JA2 TOPR TSTG Rating 6.5 VDD+0.4 350 600 208.5 360 347 -40 ~ 125 -65 ~ 150 Unit V V mA mW C/ W mW C/ W C C
Electrical Characteristics ( TA= 25C )
Characteristic Supply Voltage Supply Current Operating Point Release Point Hysteresis Output Voltage High Output Voltage Low Output Current Output Leakage Current Output Voltage Low On Time Duty Ratio Sym. VDD IDD BOP BRP BHYS VOH VOL IOUT IFGLEK VFGOL TON RDR TOFF / TON IOUT = 300 mA IOUT = 300 mA RL = 30 VFG = 5 V IFG= 10 mA 6 152 7 Condition Min. Operating Auto-restart operating 4.7 2 Limit Typ. 3.3 5 1.0 -1.0 2.0 148 Max. 5.5 10 10 -10 20 0.3 5 0.4 8 V mA mT mT mT V V mA A V ms Unit
Magnetic Specifications ( TJ = 25)
O1/O2 Output Terminal ( TJ = 25)
FG Open-Drain Terminal ( TJ = 25)
Automatic Self-Restart Circuit
SP-FD212-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
FD212
Block Diagram & Application Circuit
POWER
VDD
Power
TACHO GENERATOR
FG FG
HALL IC
LOGIC BLOCK
+ DRIVERS -
O1 O2
GND
LOCK DETECTION
Application Notes
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:
Power Dissipation-Temperature (SOT25)
500 800
Power Dissipation-Temperature (LFCSP8)
Power Dissipation (mW)
700 600 500 400 300 200
Power Dissipation (mW)
450 400 350 300 250 200 150 100 50 0 0 25 50 75 100 125 150
100 0 0 25 50 75 100 125 150
Ambient Temperature ( )
Ambient Temperature ( )
SP-FD212-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
FD212
Electrical Characteristic (TA= 25C)
The BOP versus supply voltage curve. The BRP versus supply voltage curve.
BOP versus Supply Voltage
20.0 0.0 Flu x D en sity (G ) 15.0 -5.0 10.0
Flu x Den sity ( G)
BRP versus Supply Voltage
2.0 3.0 4.0 5.0 6.0 7.0 8.0
-10.0
5.0
-15.0 0.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 -20.0 Su p p l y Vo l t ag e (V)
Su p p ly Vo ltage (V)
The Hysteresis versus supply voltage curve.
The saturation voltage of output.
BHYS versus Supply Voltage
6.0
30.0
Saturation Voltage versus Output Current
5.0
Delta Flu x D en si t y (G ) 25.0
Voltage ( V)
20.0 15.0 10.0 5.0 0.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
4.0 VO1 3.0 2.0 1.0 0.0 50.00 100.00 150.00 200.00
Ou tp u t C u r r en t ( m A)
VDD VO2
Su p p l y Vo l t ag e (V)
SP-FD212-A.003
VersionA.003
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SILICON TOUCH TECHNOLOGY INC.
FD212
Package Specifications ( LFCSP8 )
(LFCSP8 )
Bottom View
e1 5 8 L
Top View
8 5
Hall Sensor Location
E1 1.0 +- 0.1mm 4 b e 0.7+-0.1mm D1 1 1 E
SXXX
4 D
Hall Sensor Location
0.12mm A3 A1 y e A
xxx is the run code.
Dimensions (mm) SYMBOL A A1 A3 b D D1 E E1 e e1 L Y MIN 0.00 0.15 1.90 1.55 1.90 0.85 0.25 NOM 0.02 0.127 0.20 2.00 1.60 2.00 0.90 0.50 1.50 0.35 MAX 0.425 0.05 0.25 2.10 1.65 2.10 0.95 0.45 0.08
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SILICON TOUCH TECHNOLOGY INC.
FD212
( SOT-25 )
(5-pin SOT-25 )
D e
C
H
E 0.8+-0.1
Hall Sensor Location
L 1.05+-0.1 1
A2 A1
A
b
SYMBOL A A1 A2 b C D E e H L 1
Dimensions in Millimeters MIN 0.90 0.00 0.70 0.35 0.08 2.70 1.40 2.60 0.35 0 NOM 1.10 0.80 0.40 0.15 2.90 1.60 1.90(TYP) 2.80 5 MAX 1.30 0.15 0.90 0.50 0.25 3.10 1.80 3.00 10
The products listed herein are designed for ordinary electronic applications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation.
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VersionA.003
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