Diodes AH373 User Manual

A

H373

INTERNAL PULL-UP HALL EFFECT LATCH

Description

AH373 is a single-digital-output Hall-Effect latch sensor with internal

pull-up resistor for high temperature operation. The device includes

an on-chip Hall voltage generator for magnetic sensing, an amplifier

to amplify Hall voltage, and a comparator to provide switching

hysteresis for noise rejection, and an output driver with a pull-up

resistor. An internal band-gap regulator provides a temperature

compensated supply voltage for internal circuits and allows a wide

operating supply range.

When the magnetic flux density (B) perpendicular to the package is

larger than operate point (Bop), output is switched on (OUT pin is

pulled low). The output state is held on until a magnetic flux density

reversal falls below Brp. When B is less than Brp, the output is

switched off.

The AH373 is available in SIP-3L, SC59 and SOT23 packages.

Features

 Bipolar Hall Effect Latch Operation

 2.2V to 20V Operating Range

 Single Output with Built-in Pull-up Resistor

 25mA output Sink Capability

 -40C to +125°C Operating Temperature

 Industry Standard SIP-3L, SC59 and SOT23 Packages

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

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.

Pin Assignments

(TOP View)

SC59 and SOT23

(TOP View)

SIP-3L

Applications

 Rotor Position Sensing for Motor Commutation

 Encoder

 Speed Measurement – RPM Monitor

 Contact-less Current Switch

3.

OUT

GND

2.

V

1.

DD

Typical Application Circuits

Driver

&

Control Logic

Hall Motor Driver

AH373

Document number: Draft DS31173 Rev. 11 - 2

HA

HB

HC

IA
IB

IC

Ia
Ib

Ic

RPM sensing

3 Phase Hall Motor

M

Digital Hall Effect Sensor

M: Three Phase Hall Motor

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Typical Application Circuits (cont.)

Typical AH373 Circuit

Note: 4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical

H373

Pin Descriptions

Package: SC59, SOT23 and SIP-3L

Pin Number Pin Name Function

Functional Block Diagram

V

DD

1

Regulator

1

2 GND Ground

3 OUTPUT Output

V

DD

Power Supply Input

Hall

plate

Amp

Rpu

OUTPUT

3

2

2

GND

AH373

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H373

Absolute Maximum Ratings (Note 5) @T

Symbol Characteristics Values Unit

VDD

V

(Off)

OUT

IO (sink)

B Magnetic Flux Density Unlimited

PD

TS

TJ

Notes: 5. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.

6. The absolute maximum V

Supply Voltage (Note 6) 28 V

Output “Off” Voltage 28 V

Output “On” current (sink) 25 mA

Package Power Dissipation

Storage Temperature Range -65 to +150 °C

Maximum Junction Temperature +150 °C

of 28V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to operate

the device at the absolute maximum rated conditions for any period of time.

DD

Recommended Operating Conditions (@T

Symbol Characteristic Conditions Rating Unit

VDD

TA

Note: 7. The output of IC will be switched after the supply voltage is over 2.2V, but the magnetic characteristics will not be normal until the supply is over 2.5V.

Electrical Characteristics (@T

Symbol Characteristic Conditions Min Typ Max Unit

V

OUT

IDD

I

OFF

Rpu Internal Pull-up Resistor — 7 10 13 kΩ

AH373

Document number: Draft DS31173 Rev. 11 - 2

Supply Voltage (Note 7) Operating 2.2 to 20 V

Operating Temperature Range Operating -40 to +125 °C

= +25°C, VDD = 12V, unless otherwise specified.)

A

Output On Voltage

Supply Current B < Brp — 2 4 mA

Output Leakage Current Output off — < 0.1 10 µA

= +25°C, unless otherwise specified.)

A

SIP-3L 550 mW

SC59 and SOT23 230 mW

= +25°C, unless otherwise specified.)

A

I

= 20mA

OUT

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H373

Magnetic Characteristics (Note 8) (@T

Symbol Characteristic Min Typ Max Unit

Bop (South pole to part marking side for SIP-3L and SOT23;
North pole to part marking side for SC59 )

Brp (South pole to part marking side for SIP-3L and SOT23;
North pole to part marking side for SC59 )

Bhy (|Bopx|-|Brpx|) Hysteresis — 60 —

Note: 8. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

= +25°C, VDD = 2.5V to 20V, unless otherwise specified.)

A

Operation Point 5 30 60

Release Point -60 -30 -5

(1mT=10 Gauss)

( Output Voltage )

Gauss

AH373

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Thermal Performance Characteristics

(1) Package Type: SIP-3L

T

A

PD (mW)

(°C)

25 50 60 70 80 85 90 95 100 105 110 115 120 125 130 135 140 150

550 440 396 352 308 286 264 242 220 198 176 154 132 110 88 66 44 0

P

D

(mW)

Power Dissipation Curve

600

500

400

300

200

H373

100

0

-40

(2) Package Type: SC59 and SOT23

T

(°C)

A

PD (mW)

25 50 60 70 80 85 90 100 105 110 120

230 184 166 147 129 120 110 92 83 74 55

PD(mW)

300

200

0 25 50 75 100 125 150

A (°C)

T

125

130 140 150

46

37 18 0

Power Dissipation Curve

100

0

-40

0 25 50 75 100 125 150

AH373

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T

(°C)

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H373

Ordering Information

Part Number

AH373-PL-A P SIP-3L NA NA NA NA 4000/Box -A

AH373-PL-B P SIP-3L 1000 -B NA NA NA NA

AH373-PG-A P SIP-3L NA NA NA NA 4000/Box -A

AH373-PG-B P SIP-3L 1000 -B NA NA NA NA

AH373-SA-7 SA SOT23 NA NA 3000/Tape & Reel -7 NA NA

AH373-WL-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA

AH373-WG-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA

Notes: 9. Ammo Box is for SIP-3L Spread Lead.

10. Bulk is for SIP-3L Straight Lead.

11. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website
http://www.diodes.com/datasheets/ap02007.pdf.

Package

Code

Packaging

(Note 11)

Quantity

Bulk 7” Tape and Reel Ammo Box

Part Number

Suffix

Quantity

Part Number

Suffix

Quantity

Part Number

Suffix

Marking Information

(1) Package Type: SC59 and SOT23

(2) Package Type: SIP-3L

AH373

Document number: Draft DS31173 Rev. 11 - 2

Part Number Package Identification Code

AH373 SC59 P2

AH373 SOT23 S2

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Package Outline Dimensions (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(1) Package Type: SC59

K

J

A

C

B

G

H

N

D

L

M

Dim Min Max Typ

A 0.35 0.50 0.38
B 1.50 1.70 1.60
C 2.70 3.00 2.80
D - - 0.95
G - - 1.90
H 2.90 3.10 3.00
J 0.013 0.10 0.05
K 1.00 1.30 1.10
L 0.35 0.55 0.40
M 0.10 0.20 0.15
N 0.70 0.80 0.75



All Dimensions in mm

SC59

0° 8° -

Min/Max (in mm)

H373

C

L

PART
MARKING
SURFACE

Hall Sensor

Pin1

1.4/1.6

Sensor location

Die

AH373

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Package Outline Dimensions (cont.) (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(2) Package Type: SOT23

A

H

K

F

J

D

G

C

B

K1

L

M

Min/Max (in mm)

Dim Min Max Typ

A 0.37 0.51 0.40
B 1.20 1.40 1.30
C 2.30 2.50 2.40
D 0.89 1.03 0.915
F 0.45 0.60 0.535
G 1.78 2.05 1.83
H 2.80 3.00 2.90
J 0.013 0.10 0.05
K 0.903 1.10 1.00

K1 - - 0.400

L 0.45 0.61 0.55
M 0.085 0.18 0.11



SOT23

0° 8° -

All Dimensions in mm

H373

AH373

Document number: Draft DS31173 Rev. 11 - 2

Pin1

MARKING
SURFACE

Hall Sensor

1.4/1.5

Sensor location

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PART

Die

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Package Outline Dimensions (cont.) (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(3) Package Type: SIP-3L for Bulk pack

A

Notes: 13. SIP-3L Bulk pack - Thickness J includes Burrs

a

1

a

2

BP

EF

L

J

C

N

D

3

a

G

H

a4

SIP-3 for Bulk Pack

Dim Min Max

A 3.9 4.3

a1
a2
a3
a4

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

Min/Max (in mm)

H373

5 Typ
5 Typ

45 Typ

3 Typ

PART
MARKING
SURFACE

0.51mm
Typ

1.90/2.10

1.05/1.25

123

Sensor location

AH373

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Package Outline Dimensions (cont.) (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(4) Package Type: SIP-3L for Ammo pack

A

E

F

B

P

D

G

N

C

a1

a2

SIP-3 for Ammo Pack

Dim Min Max

A 3.9 4.3

a1
a2

B 2.8 3.2
C 1.40 1.60
D 0.35 0.41
E 0.43 0.48
F 0 0.2
G 2.4 2.9
N 0.63 0.84
P 1.55 -

All Dimensions in mm

45 Typ

3 Typ

H373

AH373

Document number: Draft DS31173 Rev. 11 - 2

Sensor location

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Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

(1) Package Type: SC59

(2) Package Type: SOT23

Y

Z

X E

C

Dimensions Value (in mm)

Z 3.4
X 0.8
Y 1.0
C 2.4
E 1.35

H373

Dimensions Value (in mm)

Z 2.9
X 0.8
Y 0.9
C 2.0
E

1.35

AH373

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H373

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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

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Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

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Copyright © 2013, Diodes Incorporated

www.diodes.com

IMPORTANT NOTICE

LIFE SUPPORT

AH373

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