EFFECT LATCH. AH276 Datasheet

AH276 LATCH. Datasheet pdf. Equivalent

AH276 Datasheet
Recommendation AH276 Datasheet
Part AH276
Description COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Feature AH276; COMPLEMENTARY OUTPUT HALL EFFECT LATCH General Description Features Data Sheet AH276 The AH276 i.
Manufacture BCD Semiconductor
Datasheet
Download AH276 Datasheet




BCD Semiconductor AH276
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
General Description
Features
Data Sheet
AH276
The AH276 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.
· On-Chip Hall Sensor
· 3.5V to 16V Supply Voltage
· 350mA (avg) Output Sink Current
· Reversed Supply Voltage Protection
· Build in Over Temperature Protection Function
· -20oC to 85oC Operating Temperature
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 300V (Machine Model)
Applications
Placing the device in a variable magnetic field, if the · Dual-Coil Brushless DC Motor
magnetic flux density is larger than threshold BOP, the
pin DO will be turned low (on) and pin DOB will be
·
·
Dual-Coil Brushless DC Fan
Revolution Counting
turned high (off). This output state is held until the · Speed Measurement
magnetic flux density reverses and falls below BRP,
then causes DO to be turned high (off) and DOB
turned low (on).
AH276 is available in TO-94 (SIP-4L) package.
Nov. 2009 Rev. 1. 4
TO-94
Figure 1. Package Type of AH276
BCD Semiconductor Manufacturing Limited
1



BCD Semiconductor AH276
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Pin Configuration
Z4 Package
(TO-94)
4 GND
3 DOB
2 DO
1 VCC
Figure 2. Pin Configuration of AH276 (Front View)
Data Sheet
AH276
Pin Description
Pin Number
1
2
3
4
Pin Name
VCC
DO
DOB
GND
Supply voltage
Output 1
Output 2
Ground
Function
Nov. 2009 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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BCD Semiconductor AH276
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Functional Block Diagram
VCC
1
Regulator
Temperature
Compensation
Hall
Sensor
Amplifier
Schmitt
Trigger
Output
Driver
Over
Temperature
Protection
Data Sheet
AH276
DO
2
4 GND
3
DOB
Figure 3. Functional Block Diagram of AH276
Ordering Information
AH276 -
Circuit Type
E1: Lead Free
G1: Green
Package
Z4: TO-94 (SIP-4L)
Package
TO-94
Temperature
Range
Part Number
Lead Free
Green
AH276Z4-AE1
AH276Z4-AG1
-20 to 85 oC AH276Z4-BE1
AH276Z4-BG1
AH276Z4-CE1
AH276Z4-CG1
Magnetic Characteristics
A: 10 to 50Gauss
B: 5 to 70Gauss
C: 100Gauss
Marking ID
Lead Free
Green
AH276Z4-E1
AH276Z4-G1
AH276Z4-E1
AH276Z4-G1
AH276Z4-E1
AH276Z4-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.
Nov. 2009 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
3







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