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PDF AH3768Q Data sheet ( Hoja de datos )
| Número de pieza | AH3768Q | |
| Descripción | HIGH-VOLTAGE LOW-SENSITIVITY AUTOMOTIVE HALL-EFFECT LATCH | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Description
The AH3768Q is an AEC-Q100 qualified, high-voltage, low-sensitivity
Hall-Effect latch IC designed for brushless DC-motor commutation,
speed measurement, angular or linear encoders and position sensors
in automotive applications. To support wide range of demanding
applications, the design is optimized to operate over the supply range
of 3.0V to 28V. With chopper stabilized architecture and an internal
bandgap regulator to provide temperature compensated supply for
internal circuits, the AH3768Q provides a reliable solution over the
whole operating range. For robustness and protection, the device has
a reverse blocking diode with a Zener clamp on the supply. The
output has an over current limit and a Zener clamp.
AH3768Q
HIGH-VOLTAGE, LOW-SENQSITIVITY
AUTOMOTIVE HALL-EFFECT LATCH
Pin Assignments
(Top View)
GND 2
3 OUTPUT
1 VDD
SOT23
The single, open-drain output can be switched on with South pole of
sufficient strength and switched off with North pole of sufficient
strength. When the magnetic flux density (B) perpendicular to the
package is larger than the operate point (Bop) the output is switched
on (pulled low). The output is held latched until magnetic flux density
reverses and becomes lower than the release point (Brp).
(Top View)
SIP-3
3. OUTPUT
2. GND
1. VDD
Features
• Bipolar Latch Operation (South Pole: On, North Pole: off)
• High Sensitivity: Bop and Brp of +175G and -175G Typical
• Single, Open-Drain Output with Overcurrent Limit
• 3.0V to 28V Operating Voltage Range
• Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
• Good RF Noise Immunity
• Reverse Blocking Diode
• Zener Clamp on Supply and Output Pins
• -40°C to +150°C Operating Temperature
• ESD: HBM ＞8kV, CDM: >2kV
• AEC-Q100 Grade 0 Qualified
• Industry Standard SOT23 and SIP-3 Packages
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
Applications
• Brushless DC-Motor Commutation
• Revolution Per Minute (RPM) Measurement
• Angular and Linear Encoder and Position Sensing and Indexing
• Flow Meters
• Contactless Commutation, Speed Measurement and Angular
Position Sensing/Indexing in Automotive Applications
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH3768Q
Document number: DS38077 Rev. 2 - 2
1 of 13
www.diodes.com
July 2015
© Diodes Incorporated
1 page  
Typical Operating Characteristics
Output Switch Operate and Release Points (Magnetic Thresholds) – Bop and Brp
AH3768Q
Q
400
375
TA = +25oC
350
325
300
275
250
225
200
175
150
125
100
75
50
25
0
2468
Hyst
Bop
10 12 14 16 18 20 22 24 26 28 30
Supply Voltage (V)
Switch Operate Point Bop vs Supply Voltage
0
-25
-50
-75
-100
-125
-150
-175
-200
-225
-250
-275
-300
-325
-350
-375
-400
-425
-450
TA = +25oC
2468
Brp
10 12 14 16 18 20 22 24 26 28 30
Supply Voltage (V)
Switch Release Point Brp vs Supply Voltage
400
375
VDD = 3V
350
325
300
275
250
225
200
175
150
125
100
75
50
25
0
-50 -25
0
Hyst
Bop
25 50 75 100 125 150 175
Temperature (oC)
Switch Operate Point Bop vs Temperature
0
-25
VDD = 3V
-50
-75
-100
-125
-150
-175
-200
-225
-250
-275
-300
-325
-350
-375
-400
-425
-450
-50 -25
0
25 50 75 100 125
Temperature (oC)
Switch Release Point Brp vs Temperature
Brp
150 175
400
375
VDD = 12V
350
325
300
275
250
225
200
175
150
125
100
75
50
25
0
-50 -25
0
Hyst
Bop
25 50 75 100 125 150 175
Temperature (oC)
Switch Operate Point Bop vs Temperature
0
-25
VDD = 12V
-50
-75
-100
-125
-150
-175
-200
-225
-250
-275
-300
-325
-350
-375
-400
-425
-450
-50 -25
0
25 50 75 100 125
Temperature (oC)
Switch Release Point Brp vs Temperature
Brp
150 175
AH3768Q
Document number: DS38077 Rev. 2 - 2
5 of 13
www.diodes.com
July 2015
© Diodes Incorporated
5 Page 
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(2) Package Type: SIP-3 Bulk
Sensor location to be added
a1
a2
B
P
A
EF
L
J
C
N
D
GH
a4
AH3768Q
Q
SIP-3 (Bulk)
Dim Min
Max
A 3.9 4.3
a1 5° Typ
a2 5° Typ
a3 45° Typ
a4 3° Typ
B 2.8 3.2
C 1.40 1.60
D 0.33 0.432
E 0.40 0.508
F 0 0.2
G 1.24 1.30
H 2.51 2.57
J 0.35 0.43
L 14.0 15.0
N 0.63 0.84
P 1.55
-
All Dimensions in mm
PART
MARKING
SURFACE
1.90/2.10
Min/Max
0.63/0.84
0.27/0.48
1.05/1.25
Hall Sensor
PART
MARKING
SURFACE
123
Sensor Location – To be updated
AH3768Q
Document number: DS38077 Rev. 2 - 2
11 of 13
www.diodes.com
July 2015
© Diodes Incorporated
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AH3768Q.PDF ] | |
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