SP-FD212-A003风机驱动IC

Block Diagram & Application Circuit
POWER
FD212
VDD Power
TACHO GENERATOR
FG FG
HALL IC
GND
LOGIC BLOCK
LOCK DETECTION
+
O1
DRIVERS
-
O2
Application Notes
There is no requirement of the bypass capacitor or Zener Diode between VDD
6
GND Ground pin
7
O2
Output driving/sinking pin 2
8
FG
Frequency generator output
PIN NO. PIN NAME
1
O2
2
VDD
3
FG
4
GND
5
O1
DESCRIPTION Output driving/sinking pin 2 Power supply pin Frequency generator output Ground pin Output driving/sinking pin 1
Features and Benefits
z Optimized for single coil Brushless DC Motor applications z Built-in Hall effect sensor z Built-in Reverse Protection z Frequency generator output z Lock detection and automatic self-restart without external capacitor z High output sinking and driving capability z Ultra-thin, small and highly reliable package (LFCSP8,SOT-25)
SP-FD212-A.003
Version：A.003
Page：2
點晶科技股份有限公司
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
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.
Characteristic
Sym.
Condition
Limit Unit
Min. Typ. Max.
Supply Voltage
VDD Operating
2
3.3 5.5
V
Supply Current
IDD Auto-restart operating
5
10 mA
Magnetic Specifications ( TJ = 25℃)
VOH IOUT = 300 mA VOL IOUT = 300 mA IOUT RL = 30Ω
4.7
-
-
V
-
-
0.3
V
-
148
-
mA
FG Open-Drain Terminal ( TJ = 25℃)
Output Leakage Current IFGLEK
Output Voltage Low
VFGOL
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 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
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
Operating Point
BOP
-
1.0 10 mT
Release Point
BRP
Hysteresis
BHYS
O1/O2 Output Terminal ( TJ = 25℃)
-
-1.0 -10 mT
-
2.0 20 mT
Output Voltage High Output Voltage Low Output Current
400
200
300
150 200
100
50
100
0
0
25
50
75
100
125
150
Ambient Temperature ( ℃ )
0
0
25
50
75
100
125
150
Ambient Temperature ( ℃ )
SP-FD212-A.003
Version：A.003
Page：4
點晶科技股份有限公司
and GND in normal applications. The connection of this capacitor or Zener Diode
will increase stability of operation, if required.
ห้องสมุดไป่ตู้
The FG pin is an open-drained output. The output frequency is corresponding to
點晶科技股份有限公司
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 allowable power dissipation of the IC package. The recommended motor
driver power dissipation versus temperature of SOT25 and LFCSP8 are depicted
as follows:
BOP versus Supply Voltage
20.0
15.0
10.0
5.0
0.0
2.0
Power Dissipation-Temperature (SOT25)
500
Power Dissipation-Temperature (LFCSP8)
800
Power Dissipation (mW) Power Dissipation (mW)
450
700
400 600
350
300
500
250
Automatic Self-Restart Circuit
VFG = 5 V IFG= 10 mA
5
μA
0.4
V
On Time Duty Ratio
TON RDR
TOFF / TON
-
152
-
ms
6
7
8
SP-FD212-A.003
Version：A.003
Page：3
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
( 2 to 5.5 Volts )
新竹市展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC.