首页 |元器件品牌

AH478Z5-BE1 [DIODES]

Hall Effect Sensor, -10mT Min, 10mT Max, Rectangular, Through Hole Mount, ROHS COMPLIANT, TO-95;
AH478Z5-BE1
型号： AH478Z5-BE1
厂家： DIODES INCORPORATED    DIODES INCORPORATED
描述：

Hall Effect Sensor, -10mT Min, 10mT Max, Rectangular, Through Hole Mount, ROHS COMPLIANT, TO-95
文件： 总11页 (文件大小：249K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
 查看货源
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
General Description  
Features  
The AH478 is a single coil Hall sensor with output  
drivers designed for brush-less DC motor application.  
This IC consists of one H-bridge driver for motor's coil  
driving and has automatic lock shutdown and restart  
function relatively. To avoid coil burning, rotor lock  
shutdown detection circuit shut down the output driver  
if the rotor is blocked and then the automatic recovery  
circuit will try to restart the motor. This function  
repeats while rotor is blocked. Until the blocking is  
removed, the motor recovers running normally.  
·
On-chip Hall Sensor  
Rotor-locked Shutdown  
Automatically Restart  
Operating Voltage: 3.5 to 18V  
High Output Sourcing/Sinking Capability up to  
300mA  
Bi-direction H-type Output Drivers for Single  
Coil  
·
·
·
·
·
·
Internal Bandgap Regulator for Temperature  
Compensation  
·
·
·
·
Low Output Switching Current Noise  
If a magnetic flux density is larger than threshold B  
,
OP  
o
Operating Temperature: -20 to 85 C  
the DO is turned to sink and DOB is turned to drive.  
This output state is held until a magnetic flux density  
Low Profile TO-95 Package  
ESD Rating: 3000V (Human Body Model)  
reversal falls below B causing DO to be turned to  
RP,  
drive and DOB turned to sink.  
Applications  
This IC is available in TO-95 package.  
·
·
Single Coil Brushless DC Motor  
Single Coil Brushless DC Fan  
TO-95  
Figure 1. Package Type of AH478  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
1
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Pin Configuration  
Z5 Package  
(TO-95)  
GND  
5
4
3
2
1
DOB  
DO  
V
CC  
CT  
Figure 2. Pin Configuration of AH478 (Front View)  
Pin Description  
Pin Number  
Pin Name  
CT  
Function  
1
2
3
4
5
Lock and rotation setting capacitor terminal  
VCC  
Supply voltage  
Output 1  
DO  
DOB  
GND  
Output 2  
Ground  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
2
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Functional Block Diagram  
VCC  
2
VCC  
Regulator  
4
DOB  
Hall  
Sensor  
Schmitt  
Trigger  
Pre-  
driver  
Amplifier  
VCC  
3
5
DO  
Lock  
GND  
Protection and  
Auto Restart  
1
CT  
Figure 3. Functional Block Diagram of AH478  
Ordering Information  
AH478  
-
E1: Lead Free  
G1: Green  
Circuit Type  
Package  
Magnetic Characteristics  
A: 5 to 70 Gauss  
B: 100 Gauss  
Z5: TO-95  
Part Number  
Marking ID  
Temperature  
Package  
Packing Type  
Range  
Lead Free  
AH478Z5-AE1  
AH478Z5-BE1  
Green  
Lead Free  
Green  
AH478Z5-AG1 AH478Z5-E1  
AH478Z5-BG1 AH478Z5-E1  
AH478Z5-G1  
AH478Z5-G1  
Bulk  
Bulk  
-20 to 85oC  
TO-95  
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with  
"G1" suffix are available in green package.  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
3
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Absolute Maximum Ratings (Note 1)  
o
(T =25 C)  
A
Parameter  
Symbol  
Value  
Unit  
Supply Voltage  
VCC  
20  
V
Magnetic Flux Density  
B
Unlimited  
250  
Gauss  
mA  
Continuous  
Hold  
Output ON Current  
IOUT  
300  
mA  
Peak (start up)  
600  
mA  
Power Dissipation  
Thermal Resistance  
Storage Temperature  
PD  
θJA  
600  
mW  
oC/W  
Die to atmosphere  
208  
oC  
V
TSTG  
-50 to 150  
ESD (Machine Model)  
300  
ESD (Human Body Model)  
3000  
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.  
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated  
under "Recommended Operating Conditions" is not implied. "Absolute Maximum Ratings" for extended period may affect  
device reliability.  
Recommended Operating Conditions  
o
(T =25 C)  
A
Parameter  
Symbol  
Min  
3.5  
Max  
18  
Unit  
VCC  
Supply Voltage  
Ambient Temperature  
V
oC  
TA  
-20  
85  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
4
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Electrical Characteristics  
o
(T =25 C, V =14V, unless otherwise specified)  
A
CC  
Parameter  
Symbol  
Test Condition  
IOUT=150mA  
OUT=150mA  
Min  
Typ  
Max  
Unit  
Output Saturation Voltage (Sink)  
Output Saturation Voltage (Drive)  
0.2  
0.25  
V
VSAT  
I
VCC  
-
VCC  
-
VCC  
16  
V
1.0  
0.8  
Supply Current  
ICC  
TON  
TOFF  
ICHG  
IDHG  
DR  
VCC=20V, output open  
RL=820Ω, CCT=0.47µF  
RL=820Ω, CCT=0.47µF  
VCT=1 to 2.5V  
14  
135  
1
mA  
ms  
s
Output ON Time  
Output OFF Time  
Charge Current  
3.5  
0.5  
7
µA  
µA  
Discharge Current  
Duty Ratio  
VCT=3.5 to 2.5V  
TOFF/TON  
5
10  
Clamp Voltage  
VCL  
VCP  
θJC  
Limiting Voltage  
Limiting Voltage  
TO-95  
2.8  
1.8  
45  
V
V
Comparator Voltage  
Thermal Resistance (Junction to Case)  
oC/W  
Magnetic Characteristics  
o
(T =25 C)  
A
Parameter  
Symbol  
Grade  
Min  
Typ  
Max  
Unit  
A
B
A
B
5
70  
100  
-5  
BOP  
Operating Point  
Gauss  
-70  
BRP  
Releasing Point  
Hysteresis  
Gauss  
Gauss  
-100  
BHYS  
70  
Test Circuit  
AH478  
(Front View)  
S
N
VCC  
CT  
DO DOBGND  
Marking Side  
1
2
3
4
5
Power  
Input  
RL  
820Ω  
C1  
CCT  
10µF  
2.2µF  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
5
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Typical Performance Characteristics  
18  
16  
14  
12  
10  
8
16  
14  
12  
10  
8
TA=25OC  
CT Open  
CT to GND  
VCC=14V  
CT Open  
CT to GND  
6
6
4
4
2
2
-20  
-10  
0
10  
20  
30  
40  
50  
60  
70  
80  
2
4
6
8
10  
12  
14  
16  
18  
20  
Ambient Temperature (OC)  
Supply Voltage (V)  
Figure 5. Supply Current vs. Ambient Temperature  
Figure 4. Supply Current vs. Supply Voltage  
80  
60  
40  
100  
80  
60  
40  
20  
0
20  
VCC=14V  
TA=25OC  
BOP  
BOP  
0
BRP  
-20  
-40  
-60  
-80  
BHYS  
BRP  
BHYS  
-20  
-40  
-20  
-10  
0
10  
20  
30  
40  
50  
60  
70  
80  
4
6
8
10  
12  
14  
16  
18  
Supply Voltage (V)  
Ambient Temperature (OC)  
Figure 6. BOP/BRP/BHYS vs. Supply Voltage  
Figure 7. BOP/BRP/BHYS vs. Ambient Temperature  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
6
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Typical Performance Characteristics (Continued)  
1000  
900  
800  
1000  
900  
800  
TA=25°C  
700  
600  
500  
400  
300  
200  
100  
0
700  
600  
500  
400  
300  
200  
100  
0
VCC=14V  
VCC=14V  
IOUT=200mA  
VSAT-up  
VSAT-up  
VSAT-down  
VSAT-down  
-20  
-10  
0
10  
20  
30  
40  
50  
60  
70  
80  
50  
100  
150  
200  
250  
300  
350  
Ambient Temperature (OC)  
Output Current (mA)  
Figure 8. Saturation Voltage vs. Output Current  
Figure 9. Saturation Voltage vs. Ambient Temperature  
600  
500  
400  
300  
200  
100  
0
-25  
0
25  
50  
75  
100  
125  
150  
Ambient Temperature (OC)  
Figure 10. Power Dissipation vs. Ambient Temperature  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
7
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Typical Application  
AH478  
(Front View)  
VCC  
CT  
DO DOBGND  
1
2
3
4
5
Power  
Input  
Coil  
C1  
10µF  
CCT  
(Note 2)  
Note 2: The capacitance of CCT can be selected from 1µF to 3.3µF, and the recommended value is 2.2µF.  
Figure 11. Typical Application of AH478  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
8
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Operating Diagram (Note 3)  
Hall Input  
ON  
OFF  
Motor Output  
CT  
Clamp  
Voltage  
CT  
Comparator  
CT  
Voltage  
Motor lock  
cleared  
Motor locked  
TOFF  
TON  
Reverts to normal operation  
Motor lock detected  
Note 3: The automatic restart circuit detects a motor lock condition and automatically turns off the output current. When the  
lock is cleared, the IC automatically restarts and allows the motor to run. In AH478, automatic restart is performed in the fol-  
lowing manner. A motor lock condition is detected when the Hall signal stops switching. The output is ON when CT pin is  
being charged, and OFF when CT pin is being discharged.  
C * (VCL − VCP  
)
T
T
ON  
=
(Sec)  
(Sec)  
ICHG  
C * (VCL − VCP  
)
OFF  
=
IDHG  
Output ON time (TON) and OFF time (TOFF) are determined by C, the capacitance of the CT pin external capacitor.  
VCL is the CT pin clamp voltage  
VCP is the CT pin comparator voltage  
ICHG is the CT pin charge current  
IDHG is the CT pin discharge current  
Figure 12. Control Timing Diagram of AH478  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
9
Data Sheet  
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION AH478  
Mechanical Dimensions  
TO-95  
Unit: mm(inch)  
1.295(0.051)  
1.803(0.071)  
0.610(0.024)  
1.700(0.067)  
2.000(0.079)  
MIN  
0.850(0.033)  
1.150(0.045)  
3.531(0.139)  
Package Sensor Location  
(For Hall IC)  
3.785(0.149)  
1.220(0.048)  
1.620(0.064)  
0.381(0.015)  
0.581(0.023)  
14.000(0.551)  
16.000(0.630)  
0.950(0.037)  
REF  
0.330(0.013)  
0.432(0.017)  
0.360(0.014)  
0.510(0.020)  
5.105(0.201)  
5.359(0.211)  
Nov. 2008 Rev. 1. 2  
BCD Semiconductor Manufacturing Limited  
10  
BCD Semiconductor Manufacturing Limited  
http://www.bcdsemi.com  
- Headquarters  
- Wafer Fab  
BCD Semiconductor Manufacturing Limited  
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.  
No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China  
800 Yi Shan Road, Shanghai 200233, China  
Tel: +86-21-24162266, Fax: +86-21-24162277  
Tel: +86-21-6485 1491, Fax: +86-21-5450 0008  
REGIONAL SALES OFFICE  
Shenzhen Office  
Taiwan Office  
USA Office  
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office  
BCD Semiconductor (Taiwan) Company Limited  
BCD Semiconductor Corp.  
Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen,  
4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,  
30920 Huntwood Ave. Hayward,  
518026, China  
Taiwan  
Tel: +886-2-2656 2808  
CA 94544, USA  
Tel: +86-755-8826 7951  
Tel : +1-510-324-2988  
Fax: +86-755-8826 7865  
Fax: +886-2-2656 2806  
Fax: +1-510-324-2788  

相关型号：

AH478Z5-BG1

 Hall Effect Sensor, -10mT Min, 10mT Max, Plastic/epoxy, Rectangular, 5 Pin, Through Hole Mount, GREEN, TO-95
DIODES

AH479-00

 Gunn Diode, 12GHz Min, 13.5GHz Max, Gallium Arsenide, Continuous Wave, W2, 1 PIN
ATMEL

AH479-70

 Gunn Diode, 12GHz Min, 13.5GHz Max, Gallium Arsenide, Continuous Wave
ATMEL

AH479-71

 Gunn Diode, 12GHz Min, 13.5GHz Max, Gallium Arsenide, Continuous Wave
ATMEL

AH479-90

 Gunn Diode, 12GHz Min, 13.5GHz Max, Gallium Arsenide, Continuous Wave, W1, 1 PIN
ATMEL

AH479-93

 Gunn Diode, 12GHz Min, 13.5GHz Max, Gallium Arsenide, Continuous Wave, W4, 1 PIN
ATMEL

AH480-70

 Gunn Diode, 13.5GHz Min, 15GHz Max, Gallium Arsenide, Continuous Wave
ATMEL

AH480-71

 Gunn Diode, 13.5GHz Min, 15GHz Max, Gallium Arsenide, Continuous Wave
ATMEL

AH480-90

 Gunn Diode, 13.5GHz Min, 15GHz Max, Gallium Arsenide, Continuous Wave, W1, 1 PIN
ATMEL

AH480-93

 Gunn Diode, 13.5GHz Min, 15GHz Max, Gallium Arsenide, Continuous Wave, W4, 1 PIN
ATMEL

AH480-M-A

 Sensor/Transducer, Bipolar, 8 Pin, Plastic/epoxy,
DIODES

AH480-M-B

 Sensor/Transducer, Bipolar, 8 Pin, Plastic/epoxy,
DIODES
©2020 ICPDF网 联系我们和版权申明