OH277A [OHHALLSENSOR]
COMPLEMENTARY OUTPUT HALL EFFECT LATCH; 互补输出霍尔效应锁存
| 型号： | OH277A |
| 厂家： | 
Nanjing Ouzhuo Technology Co., Ltd. |
| 描述： | COMPLEMENTARY OUTPUT HALL EFFECT LATCH |
| 文件： | 总5页 (文件大小：190K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OH277
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Order Information
PN OH277A/B/C Temperature Range
-20 to 85°C
Package 1000pcs/bag
General Description: OH277 is an integrated Hall sensor with output driver
designed for electronic commutation of brushless DC motor applications. The
device includes an onchip Hall sensor for magnetic sensing, an amplifier that
amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for
noise rejection, a temperature compensation circuit to compensate the temperature drift of
Hall sensitivity and two complementary open-collector drivers for sinking large load
current. It also includes an internal band-gap regulator which is used to provide bias
voltage for internal circuits. Placing the device in a variable magnetic field, if the magnetic
flux density is larger than threshold BOP, the pin DO will be turned low (on) and pin DOB
will be turned high (off). This output state is held until the magnetic flux density reverses
and falls below BRP, then causes DO to be turned high (off) and DOB turned low (on).
Features
Applications
· On-Chip Hall Sensor
· Dual-Coil Brushless DC Motor
· 3.5V to 16V Supply Voltage
· Dual-Coil Brushless DC Fan
· 400mA (avg) Output Sink Current
· Revolution Counting
· Reversed Supply Voltage Protection
· Speed Measurement
· -20oC to 85oC Operating Temperature
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 300V (Machine Model)
Functional Block Diagram
Page 1
Nanjing Ouzhuo Technology co., Ltd
www.ohhall.com
www.zbling.com
Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738
E-mail: ohhall@163.com
OH277
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Absolute Maximum Ratings （TA=25℃）
Parameter
Symbol
VCC
VRCC
B
Value
20
Unit
V
Supply Voltage
Reverse Protection Voltage
Magnetic Flux Density
-20
V
Unlimited
400
Gauss
mA
mA
mA
mW
Continuous
Output Current
Hold
IO
600
Peak (start up)
800
Power Dissipation
PD
550
Die to
atmosphere
Die to package
case
θJA
227
49
°C /W
°C /W
Thermal
Resistance
θJC
Storage Temperature
ESD (Machine Model)
TSTG
-50 to 150
300
°C
V
ESD (Human Body Model)
2000
V
Recommended Operating Conditions (TA=25°C)
Supply Voltage VCC 3.5 --16 V Ambient Temperature TA -20 to 85°C
Electrical Characteristics (TA=25°C, VCC=14V, unless otherwise specified)
Value
Parameter
Symbol
VSAT
Conditions
Unit
Min Typ Max
0.4
VCC=3.5V, IO=100mA
IO=400mA
V
V
Output Saturation
Voltage
0.35
0.1
0.6
10
-
-
Output Leakage Current
Supply Current
IOL
ICC
VCE=16V
μA
VCC=16V, OUTPUT
OPEN
12
16
-
mA
3.0
0.3
3.0
10
1.5
10
Output Rise Time
Output Fall Time
tr
tf
RL=820Ω, CL=20pF
RL=820Ω, CL=20pF
RL=820Ω, CL=20pF
-
-
μS
μS
μS
Switch Time Differential
Δt
Output Zener Breakdown
Voltage
VZ
55
V
Page 2
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738
www.ohhall.com
www.zbling.com
E-mail: ohhall@163.com
OH277
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Magnetic Characteristics (TA=25°C)
Min
Typ
30
Max
Parameter
Symbol
Grade
Unit
A
B
10
5
50
70
Gauss
Gauss
Operating Point
BOP
100
-10
Gauss
Gauss
C
A
-50
-70
-30
60
B
C
-5
Gauss
Gauss
Releasing Point
Hysteresis
BRP
-100
BHYS
Magnetic-electrical Transfer Characteristics
Page 3
Nanjing Ouzhuo Technology co., Ltd
www.ohhall.com
www.zbling.com
Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738
E-mail: ohhall@163.com
OH277
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Basic Test Circuit：
VDOB vs. Magnetic Flux Density
VDO vs. Magnetic Flux Density
Page 4
Nanjing Ouzhuo Technology co., Ltd
www.ohhall.com
www.zbling.com
Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738
E-mail: ohhall@163.com
OH277
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Mechanical Dimension
TO-94
unit:mm(inch)
Page 5
Nanjing Ouzhuo Technology co., Ltd
www.ohhall.com
www.zbling.com
Tel：86-25-52312738，86-25-83247886 FAX: 86-25-52312738
E-mail: ohhall@163.com
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