AH337

Single Phase Hall Effect Switch

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.

Rev.1.2 Mar. 29, 2006

1/8

Features

- 4.2V to 28V DC operation voltage
- Temperature compensation
- Wide operating voltage range
- Open drain pre-driver
- 25mA maximum sinking output current.
- Package: SIP3, SOT23

Applications

- VCD/DVD loader, CD/DVD ROM
- Cover detector
- Speed measurement
- Home appliances
- Home safety

General Description

AH337 is an switched Hall-Effect IC which is for
contactless switching applications. The device
includes an on-chip Hall voltage generator for
magnetic sensing, an amplifier that amplifies the
Hall voltage, a schmitt trigger to provide switching
hysteresis for noise rejection, and an open-drain
output. The bandgap regulator allows a wide
operating voltage range.
If a magnetic flux density larger than threshold Bop,
DO is turned on(low). The output state is held until
a magnetic flux density reversal falls below Brp
causing DO to be turned off (high).

Pin Assignment

337

2 : GND

3 : OUT

337

1 : Vdd

(Top view)

(SIP package)

(SOT23 package)

Pin Descriptions

Name

P/I/O

Pin #

Description

Vdd

P 1

Positive Power Supply

GND

P 2

Ground

OUT

O 3

Output Pin

Ordering Information

AH337 X - X X X

Packing

P: SIP3

W: SOT23

Package

Lead

L : Lead Free

Wafer Body

Blank or

A~Z : if necessary

to specify

Spread-leg ammo pack for SIP-3L;

Blank : Bulk

A :

Tape & Reel for SOT23

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

3/8

Absolute Maximum Ratings

( at Ta=25

C )

Characteristics

Symbol

Values

Unit

Supply Voltage

Vdd

Magnetic Flux Density

Unlimited

Output OFF Voltage

30 V

Output "ON" Current

Continuous

Operating Temperature Range

-40~+125

�C

Storage Temperature Range

-65~+150

�C

Maximum Junction Temp.

150

�C

SIP-3L 550

Package Power Dissipation

SOT23-3L

230 mW

Recommended Operating Conditions

( Ta=25

C )

Paramter

Symbol

Conditions

Rating

Unit

Supply Voltage

Vdd

Operating

4.2*~28

*Note: The output of IC will be switched after the supply voltage is over 4.2V, but the magnetic characteristics won't be normal until the

supply is over 4.5V.

Electrical Characteristics

(Ta=+ 25

�C, Vdd=12V)

Characteristic

Symbol

Test Conditions

Min

Typ

Max

Units

Output Saturation Voltage V

DS(sat)

Iout=10mA,

Bop

300

400

Output Leakage Current

Ioff

B < Brp

<0.1

10 uA

Supply Current

Idd

Output Open

Output Rise Time

RL=820

, CL=20pF

- 0.1 1 us

Output Falling Time

RL=820

, CL=20pF

- 0.1 1 us

Test Circuit

12V

OUT

RL=820 Ohm
CL=20 pF

Test Circuit

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

4/8

Magnetic Characteristics

(Ta=25

�C, Vdd=4.5V to 28V)

(1mT=10Gauss)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Operate Point

Bop

120

150

Gauss

Release Point

Brp

Gauss

Hysteresis Bhys

Gauss

Marking side

( SIP3 )

Marking side

( SOT23 )

h
y

(
O

u
t
put

Vol

t
age

)

( Magnetic flux density B )

Output

Turn off

Turn on

( off-state )

( on-state )

sat

Performance Characteristics (SIP3)

Ta (

�C)

100

(mW)

550 440 396 352 308 286 264 242 220

Ta (

�C)

105

110

115

120

125

130

135

140

150

(mW)

198 176 154 132 110 88 66 44 0

P o w e r D is s ip a tio n C u rv e

1 0 0

2 0 0

3 0 0

4 0 0

5 0 0

6 0 0

2 5

5 0

7 5

1 0 0

1 2 5

1 5 0

T a ( C )

P d (m W )

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

5/8

Performance Characteristics (SOT23-3)

Ta (

�C)

100

110

120

125

130 140 150

(mW) 230 184 166 147

129

110

37 18 0

P o w e r D is s ip a tio n C u rv e

1 0 0

2 0 0

3 0 0

2 5

5 0

7 5

1 0 0

1 2 5

1 5 0

T a ( C )

P d (m W )

Marking Information

(1) SIP3

(2) SOT23

337

YWW X

Date code
Y : Year
WW : Nth week

(Top View)

ID Code:
A~Z: Non-Lead Free
a~z : Lead Free

P1:AH337

XX YM X

Date code
Y : Year
M :Month(A~L)

(Top View)

ID code
A~Z: Non-Lead Free
a~z: Lead Free

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

6/8

Package Information

(unit: mm)

(1) Package Type: SIP-3L for Bulk Pack

Active Area Depth

Sensor Location

2.00mm

1.15mm

0.51mm

NOM

BRANDED
SURFACE

Package Dimension

1.57mm
1.47mm

4.17mm
4.04mm

1.82

15.50mm
13.00mm

1.27mm

0.41mm

45�

0.38mm

0.7mm

3.10mm
2.97mm

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

7/8

Package Information (Continued)

(2) Package Type: Spread leg SIP-3L for Ammo-Pack only

P o

F 2

F 1

W 1

D 0

P 2

b 2

T 1

A n s ic h t A -B

v ie w A -B

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min.

Nom.

Max.

Min.

Nom.

Max.

A 2.80

3.00

3.20

0.110

0.118

0.125

D 3.90

4.10

4.30

0.153

0.161

0.169

0.33

0.38

0.42

0.012

0.014

0.016

D0 3.80

4.00

4.20

0.149

0.157

0.165

F1 2.35

2.55

2.75

0.092

0.100

0.108

F2 2.45

2.55

2.85

0.096

0.100

0.112

H - -

- -

0.787

- - 1 - -

0.039

L -

0.433

P0 12.2 12.7 13.2 0.480 0.5 0.519
P2

5.95 6.35 6.75 0.234 0.25 0.265

- - 1 - -

0.039

T - -

0.55

- -

0.021

T1 - -

1.42

- -

0.055

W 17.5

18.0

18.5

0.688

0.708

0.728

W1 5.5

6.0

6.5

0.216

0.236

0.255

Package Information (Continued)

AH337

Single Phase Hall Effect Switch

Anachip Corp.

www.anachip.com.tw

Rev.1.2 Mar. 29, 2006

8/8

(3) Package Type: SOT23-3L

b(3x)

2(4x)

1.45mm

0.8mm

( Sensing point )

1(4x)

VIEW C

GAUGE PLANE

SEE VIEW C

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min.

Nom.

Max.

Min.

Nom.

Max.

A 1.05 - 1.35

0.041 - 0.053

A1 0.05 - 0.15

0.002 - 0.006

A2 1.00 1.10 1.20 0.039

0.043 0.047

b 0.25 - 0.50

0.010

0.020

C 0.08 - 0.20

0.003

0.008

2.70 2.90 3.00 0.106

0.114 0.118

1.50 1.60 1.70 0.059

0.063 0.067

HE 2.60 2.80 3.00 0.102

0.110 0.118

L 0.30 - 0.60

0.012

0.024

L1 0.50 0.60 0.70 0.020

0.024 0.028

0.73 0.78 0.83 0.029

0.031 0.033

1.80 1.90 2.00 0.071

0.075 0.079

e1 0.85 0.95 1.05 0.033

0.037 0.041

1 3

2 6

Электронный компонент: AH337G-LA