Diodes AH266 User Manual

A



Green

Description

AH266 is an integrated Hall sensor with output drivers designed for
electronic commutation of brush-less DC motor applications. The
device includes an on-chip Hall voltage generator for magnetic
sensing, a comparator that amplifies the Hall voltage, a Schmitt
trigger to provide switching hysteresis for noise rejection, and
complementary Darlington open-collector drivers for sinking large
current loads. An internal band-gap regulator is used to provide
temperature compensated supply voltage for internal circuits and
allows a wide operating supply range.

If a magnetic flux density (B) is larger than operation point (Bop), DO
will turn on (low) and DOB will turn off (high). The output state is
latched prior to reaching release point (Brp). If B< Brp, DO will turn off
and DOB will turn on. AH266 is rated for operation over temperature
range from -20°C to +85°C
devices are available in low cost die forms or rugged 4 pin SIP
packages.

and voltage range from 4V to 28V. The

Pin Assignments

H266

HIGH VOLTAGE HALL EFFECT LATCH

( Top View )

266

1 243

SIP-4

Features

 On-Chip Hall Plate
 Operating Voltage: 4V to 28V
 Output Current: 400mA (Continuous, +25°C)
 Reverse Protection Diode Only for Chip Reverse Power

Connecting (Note 1)

 Output Protection Zener Breakdown V
 Lead Free package: SIP-4

 SIP-4: Available in “Green” Molding Compound (No Br, Sb)

 RoHS Compliant (Note 2)
 Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

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.

= 62V (Typ.)

Z

Applications

 Dual-Coil Brushless DC Motor
 Dual-Coil Brushless DC Fan
 Revolution Counting
 Speed Measurement

Typical Applications Circuit

266

Coil 1

Coil 2

AH266

Document number: DS30876 Rev. 5 - 2

V

cc

12 43

Brush-Less DC Fan

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Pin Descriptions

Pin Name P/I/O Pin # Description

V

DO O 2 Output Pin
DOB O 3 Output Pin
GND P 4 Ground

Functional Block Diagram

V

CC

1

CC

H266

P 1 Power Supply Input

DO

REG.

Hal

l

Plate

Amp

Absolute Maximum Ratings (@T

Symbol Parameter Rating Unit

VCC

V

out (off)

I

O (con)

I

O (hold)

I

O (peak)

B Magnetic Flux Density Unlimited Gauss

TST

PD

θJA

θJC

AH266

Document number: DS30876 Rev. 5 - 2

Supply Voltage 28 V

Output “OFF ” Voltage 28 V

Output “ON” Current

Storage Temperature Range -65 to +150 °C

Power Dissipation (Note 6)

Thermal Resistance Junction-to-Ambient (SIP-4) 227 °C/W

Thermal Resistance Junction-to-Case (SIP-4) 49 °C/W

= +25°C, unless otherwise specified.)

A

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400 (Note 5) mA

DOB

500 mA

700 mA

550 mW

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)

H266

Recommended Operating Conditions (@T

Symbol Characteristic Conditions Min Max Unit

VCC

TA

Notes: 4. This application circuit can’t protect reverse coil current if power is connecting reverse.

5. I

6. See Performance Characteristics for other conditions.

7. Shall not exceed P

Electrical Characteristics (@T

Symbol Characteristic Conditions Min Typ. Max Unit

Supply Voltage Operating 4 28 V

Operating Ambient Temperature (Note 7) Operating -20 85 °C

is 150 mA at +85°C.

o (con)

and Safety Operation Area.

D

= +25°C, unless otherwise specified.)

A

= +25°C, unless otherwise specified.)

A

Vz

V

CE (SAT

I

CEX

ICC

tr Output Rise Time

tf Output Falling Time

t Switch Time Differential

Output Zener Breakdown Output Turn off 54 62 70 V

Output Saturation Voltage

Output Leakage Current

Supply Current

Test Circuit

24V

VCC = 24V, IC = 400mA

VCE = 24V, VCC = 24V

VCC = 24V, Output Open

V

= 24V, RL = 820Ω, CL = 20pF

CC

V

= 24V, RL = 820Ω, CL = 20pF

CC

V

= 24V, RL = 820Ω, CL = 20pF

CC

266

－

－

－

－

－

－

1.1 1.5 V

< 0.1

5 10 mA

1.0 5 µs

1.0 1.5 µs

3.0 10 µs

10 μA

V

1 (DO)

out

RL1

2 (DOB)

V

out

RL2

CL2

RL1 = RL2 = 820 Ohm

CL1 = CL2 = 20 pF

AH266

Document number: DS30876 Rev. 5 - 2

CL1

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H266

Magnetic Characteristics

A grade (1mT = 10 Gauss)

Symbol Characteristic Min Typ. Max Unit

Bop Operation Point 10 — 70 Gauss

Brp Release Point -70 — -10 Gauss

Bhy Hysteresis — 80 — Gauss

B grade

Symbol Characteristic Min Typ. Max Unit

Bop Operation Point — — 100 Gauss

Brp Release Point -100 — — Gauss

Bhy Hysteresis — 80 — Gauss

Output Voltage in Volts

Operation Characteristics



S

N

DOB

Marking Side

Output Voltage in Volts

V

SAT

High

(Output Voltage)

V

SAT

DO

Bhy Turn onTurn offBhy Turn offTurn on

V

SAT

BopBop BrpBrp

00

Magnetic Flux Density in GaussMagnetic Flux Density in Gauss

DO

V

CC

V

d

hy

B

Low

(SIP-4L)

AH266

Document number: DS30876 Rev. 5 - 2

N

B

0

rp

(Magnetic Flux Density )

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B

op

S

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A

A

Performance Characteristics

T

(C)

PD (mW)

T

(C)

PD (mW)

(mW)

P

D

600

500

400

300

200

100

25 50 60 70 80 85 90 95 100

550 440 396 352 308 286 264 242 220

105 110 115 120

198 176 154 132

0

0 15 30 45 60 75 90 105 120 135 150

125 130 135 140 150

110 88 66 44 0

Power Dissipation Curve

85

H266

(°C)

T

A

Ordering Information

Device

AH266K-PG-B-A P SIP-4 1000 -B A
AH266K-PG-B-B P SIP-4 1000 -B B

Note: 8. For packaging details, go to our website at http://www.diodes.com/products/packages.html

Package

Code

Packaging

(Note 8)

Quantity Part Number Suffix

Bulk

Magnetic

Characteristics

Marking Information

( Top View )

Part Number

266X

Y WW X

X : Version : K

: Year : 0~9

Y
WW

: Week : 01~52, "52" represents

52 and 53 week

X : Internal Code : a~z : Lead Free

A~Z : Green

AH266

Document number: DS30876 Rev. 5 - 2

SIP-4L

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Package Outline Dimensions (All dimensions in mm.)

(1) Package type: SIP-4L

a

1︵2

x

︶

A

S

a

2︵2

x

︶

b

E

J

D

2

L

1

L

F

c

b

1

e

1

H266

Dim Min Max Typ

A 1.45 1.65 1.55
b1 0.38 0.44 0.40
b2 - - 0.48

c 0.35 0.45 0.40

x

︶

2

°

︵

5

4

x

3

.

0

D 5.12 5.32 5.22
e1 1.24 1.30 1.27

E 3.55 3.75 3.65

F 0.00 0.20 -

J 4.10 4.30 4.20

L 14.00 14.60 14.30
L1 1.32 1.52 1.42

S 0.63 0.83 0.73

a

4︵2

a

3︵2

x

︶

x

︶

a1 - 5° 3°
a2 4° 7° 5°
a3 4° 7° 5°
a4 - 5° 3°

All Dimensions in mm

SIP-4

AH266

Document number: DS30876 Rev. 5 - 2

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H266

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
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).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
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website, harmless against all damages.

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Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
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This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.

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:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
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representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

Copyright © 2013, Diodes Incorporated

www.diodes.com

IMPORTANT NOTICE

LIFE SUPPORT

AH266

Document number: DS30876 Rev. 5 - 2

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