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AH277A の電気的特性と機能

AH277AのメーカーはBCD Semiconductorです、この部品の機能は「COMPLEMENTARY OUTPUT HALL EFFECT LATCH」です。


製品の詳細 ( Datasheet PDF )

部品番号 AH277A
部品説明 COMPLEMENTARY OUTPUT HALL EFFECT LATCH
メーカ BCD Semiconductor
ロゴ BCD Semiconductor ロゴ 




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AH277A Datasheet, AH277A PDF,ピン配置, 機能
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
General Description
Features
Data Sheet
AH277A
The AH277A is an integrated Hall sensor with output
driver designed for electronic commutation of brush-
less DC motor applications. The device includes an on-
chip Hall sensor for magnetic sensing, an amplifier
that amplifies the Hall voltage, a Schmitt trigger to
provide switching hysteresis for noise rejection, a tem-
perature compensation circuit to compensate the tem-
perature 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).
· On-Chip Hall Sensor
· 3.5V to 16V Supply Voltage
· 400mA (avg) Output Sink Current
· Reversed Supply Voltage Protection
· -20oC to 85oC Operating Temperature
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 300V (Machine Model)
Applications
· Dual-Coil Brushless DC Motor
· Dual-Coil Brushless DC Fan
· Revolution Counting
· Speed Measurement
AH277A is available in TO-94 (SIP-4L) package.
Oct. 2009 Rev. 1. 6
TO-94
Figure 1. Package Type of AH277A
BCD Semiconductor Manufacturing Limited
1

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AH277A pdf, ピン配列
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Functional Block Diagram
VCC
1
Regulator
Temperature
Compensation
Hall
Sensor
Amplifier
Schmitt
Trigger
Output
Driver
Data Sheet
AH277A
DO
2
4 GND
3
DOB
Figure 3. Functional Block Diagram of AH277A
Ordering Information
AH277A -
Circuit Type
E1: Lead Free
G1: Green
Package
Z4: TO-94 (SIP-4L)
Magnetic Characteristics
A: 10 to 50Gauss
B: 5 to 70Gauss
C: 100Gauss
Package
TO-94
Temperature
Range
-20 to 85oC
Part Number
Lead Free
Green
AH277AZ4-AE1 AH277AZ4-AG1
AH277AZ4-BE1 AH277AZ4-BG1
AH277AZ4-CE1 AH277AZ4-CG1
Marking ID
Lead Free
Green
AH277A
AH277A-G1
AH277A
AH277A-G1
AH277A
AH277A-G1
Packing
Type
Bulk
Bulk
Bulk
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.
Oct. 2009 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
3


3Pages


AH277A 電子部品, 半導体
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Magnetic Characteristics (Continued)
Data Sheet
AH277A
S
Marking Side
N
+14V
AH277A
VCC DO DOB GND
1234
R1
820
R2
820
C1 C2
20pF 20pF
DO (VOUT1)
DOB (VOUT2)
Figure 4. Basic Test Circuit
VCC
-40
DO (V)
16
14
12
10
8
6
4
2
-20 0 20
Magnetic Flux Density B (Gauss)
VSAT
40
Figure 5. VDO vs. Magnetic Flux Density
V
SAT
-40
DOB (V)
16
14
12
10
8
6
4
2
-20 0
20
Magnetic Flux Density B (Gauss)
VCC
40
Figure 6. VDOB vs. Magnetic Flux Density
Oct. 2009 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
6

6 Page



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部品番号部品説明メーカ
AH277A

COMPLEMENTARY OUTPUT HALL EFFECT LATCH

BCD Semiconductor
BCD Semiconductor


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