A266 [ETC]
Hall Sensor IC ; 霍尔传感器IC\n
| 型号： | A266 |
| 厂家： | 
ETC |
| 描述： | Hall Sensor IC
|
| 文件： | 总7页 (文件大小：205K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ampson Technology, Inc.
A266
COMPLEMENTARY OUTPUT HALL EFFECT LATCHED SINK DRIVER IC
ꢀ FEATURES
1) On-chip Hall sensor IC with two different
sensitivity and hysteresis settings for A266.
2) Internal bandgap regulator allows temperature
compensated operations and a wide operating
voltage range.
4) Lower current change rate reduces the peak
output voltages during switching.
5) Build in protection diode for chip reverse power
connecting.
6) Package: SIP-4.
3) High output sinking capability up to 300mA for
driving large load.
ꢀ GENERAL DESCRIPTION
A266 is an integrated Hall sensors with output drivers
designed for electronic commutation of brushless DC
motor applications. The device includes an on-chip
Hall voltage generator for magnetic sensing, a
comparator that amplifies the Hall voltage, and a
Schmitt trigger to provide switching hysteresis for
noise rejection, and complementary open-collector
drivers for sinking large current loads. An internal
bandgap regulator is used to provide temperature
compensated supply voltage for internal circuits and
allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop,
DO is turned on(low) and DOB is turned off (high).
The output state is held until a magnetic flux density
reversal falls below Brp causing DO to be turned off
and DOB turned on.
A266 is rated for operation over temperature range
from -20 oC to 100 oC and voltage range from 3.5V
to 28V. The devices are available in low cost die
forms or rugged 4 pin SIP packages.
ꢀ APPLICATIONS
1) Brushless DC Motor
2) Brushless DC Fan
3) Revolution Counting
4) Speed Measurement
1/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ FUNCTIONAL BLOCK DIAGRAM
VCC
1
2
3
OUTPUT(DO)
REG.
HALL
SENSOR
OUTPUT(DOB)
4
VSS
ꢀ PIN DESCRIPTION
266
REMARK : XXX : DATE CODE ( ex : 52Z )
XXX
52 : WEEK ( ex=>52:52 WEEK . 35:35 WEEK )
Z : YEAR ( ex=>Z:DC2001 , Y:DC2002 , X:DC2003 )
1
2 3
4
Name
P/I/O
P
O
O
P
Pin #
Description
Positive Power Supply
Output Pin
Output Pin
Ground
Vcc
DO
1
2
3
4
DOB
Vss
2/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ ABSOLUTE MAXIMUM RATING ( at Ta=25oC )
Supply Voltage, Vcc ----------------------------------------------28V
Reverse VCC Polarity Voltage, VRCC------------------------- -35V
Magnetic flux density, B------------------------------------------Unlimited
Output OFF Voltage, Vce----------------------------------------50V(Note 1)
Output ON Current, Ic
Continuous ----------------------------------------------300mA
Hold-------- -----------------------------------------------400mA
Peak (Start Up)-----------------------------------------700mA
Operating Temperature Range,
Ta----------------------------------------------------------(-20 oC to +100 oC)
Storage Temperature Range,
Ts ----------------------------------------------------------(-65 oC to +150 oC)
Package Power Dissipation,
Pd----------------------------------------------------------550mW
Maximum Junction Temp , Tj------------------------------------ 175 oC
(Note1) Output Zener protection voltage.
ꢀ ELECTRICAL CHARACTERISTICS ( Ta =+25oC , Vcc=4.0V to 20V )
Characteristic
Low Supply Voltage
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Switch Time Differential
Symbol
Vce
Conditions
Vcc=3.5V, IL=100mA
—
Min
—
3.5
—
—
—
—
—
—
Typ
0.4
—
600
< 0.1
13
3.0
0.3
3.0
Max Units
—
28
V
V
Vcc
Vce(sat) Vcc=14V, IL=300mA
900
10
20
10
1.5
10
mV
uA
mA
us
us
us
Icex
Icc
tr
tf
∆t
Vce=14V, Vcc=14V
Vcc=20V, Output Open
Vcc=14V, RL=820Ω, CL=20pF
Vcc=14V, RL=820Ω, CL=20pF
Vcc=14V, RL=820Ω, CL=20pF
ꢀ POWER DISSIPATION VS. ENVIRONMENT TEMPERATURE
Ta (oC)
Pd (mW)
25
550
50
525
60
515
70
505
80
485
85
475
90
465
95
455
100
445
105
425
110
405
115
385
120
365
Pow er Dissipation Curve
Pd (m W )
600
500
400
300
200
100
0
25
50
75
100
125
150
Ta (ºC)
3/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ MAGNETIC CHARACTERISTICS
Ta=+25 oC
Ta=0 oC to 70 oC
Characteristic
Symbol
Units
Min
0
—
Max
70
100
130
0
—
—
110
150
160
Min
0
Max
70
Bin A
Bin B
Bin C
Bin A
Bin B
Bin C
Bin A
Bin B
Bin C
Bop
Bop
Bop
Brp
Brp
Brp
Bhys
Bhys
Bhys
G
G
G
G
G
G
G
G
G
Operate Point
—
—
-70
-100
-130
20
100
130
0
—
—
140
200
220
—
-70
-100
-130
40
Release Point
Hysteresis
50
60
30
40
ꢀ TEST CIRCUIT
14V
Vout1(DO)
RL1
RL2
Vout2(DOB)
CL2
CL1
RL1=RL2=820 Ohm
CL1=CL2=20 pF
4/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ HYSTERESIS CHARACTERISTICS
Bin A
DOB
DO
12
12
RP
OFF
OFF
OP
10
8
10
8
6
6
4
4
2
2
ON
OP
RP
ON
-200
-100
0
100
200
-200
-100
0
100
200
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
Bin B
DOB
DO
12
12
RP
OFF
OFF
OP
ON
10
8
10
8
6
4
6
4
2
2
ON
OP
RP
-200
0
200
-200 -100
0
100
Magnetic-F10l0ux Densi1ty00in Gauss
Magnetic Flux Density in 2G00auss
Bin C
DOB
DO
12
10
8
12
10
8
RP
OFF
OFF
OP
6
6
4
4
2
2
ON
OP
RP
ON
-200
-100
0
100
200
-200
-100
0
100
200
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
5/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ APPLICATION CIRCUITS - DOUBLE COIL
1) Output on current , Ic > 200mA
PWR
1
VCC
2
DO
3
DOB
GND
C1
4
C2
GND
Remark : C1,C2:Capacitor 2.2µF~4.7µF(optional)
2) With FG output
PWR
1
FG
VCC
2
DO
R1
3
DOB
GND
4
C1
GND
Remark : C1:Capacitor 0.1µF~1µF
R1:Resister 1KΩ
6/7
5/22/2002 REV.1.0
Ampson Technology, Inc.
A266
ꢀ PACKAGE INFORMATION
Active Area Depth
Package Sensor Location
1.75mm
1.35mm
Top
View
Top
Marking
View
Site
0.7mm
1
2
3
4
Tolerance : +/- 0.05mm
ꢀ PACKAGE DIMENSION
5o -7o
14.25mm
+/-1.25mm
1.55mm
0.38mm
+/-0.03mm
+/-0.1mm
0.85mm
+/-0.1mm
o
o
3 -5
3.65mm
+/-0.1mm
0.30mm
+/-0.1mm
0.46mm
0.38mm
+/-0.03mm
+/-0.03mm
Marking
Site
1.27mm
+/-0.03mm
o
o
o
o
5 -7
3 -5
REMARK: XXX(DATE CODE)
7/7
5/22/2002 REV.1.0
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