AH280 ANACHIP [Anachip Corp], AH280 Datasheet

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AH280

Manufacturer Part Number
AH280
Description
Hall-Effect Smart Fan Driver
Manufacturer
ANACHIP [Anachip Corp]
Datasheet

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Part Number:
AH280
Quantity:
70
Hall-Effect Smart Fan Driver
- On chip Hall plate
- Built-in Zener diode protection for output driver
- Built-in protection diode for power reverse
- Rotor-lock detection
- Automatically restart after release of motor
- Adjustable auto restart time
- Operating voltage: 3.5~20 V
- Max Output current: I
- Packages: SIP-5L, SOP-8L, SOP-8L EP
- Less external component
This datasheet contains new product information. Analog 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.
connecting
locking
Features
Pin Assignments
DOB
VCC
DO
NC
1
2
3
4
SOP-8L / SOP-8L EP
( Branded side)
1
Front View
( Top view )
2
SIP-5L
O(AVE)
3
4
= 500mA
5
8
7
6
5
CT
NC
NC
GND
1/7
AH280 is the integrated Hall sensor owned two
complementary outputs for motor’s coil driving, auto
locked shutdown and auto restart functions.
Functional block diagram includes that a regulator
with
on-chip Hall voltage generator, a comparator, a
Schmitt trigger and two current output drivers. The
regulator can provide wide operational voltage
range. The Hall voltage generator is to amplify the
Hall voltage due to Hall effect. A Schmitt trigger is
to provide switching Hysteresis for noise rejection.
To avoid coil burning, rotor-lock detection circuit will
shutdown the output driver if detect rotor-lock status.
A rotation recovery circuit is to restart the motor
after rotor-lock is removed. In addition, the auto
re-start time is flexible by adjusting the capacitance
(C
SIP-5L
SOP-8L/SOP-8L EP
Symbol P/I/O Pin #
GND
VCC
DOB
T
DO
).
CT
Symbol
General Description
Pin Descriptions
GND
VCC
DOB
DO
NC
CT
temperature-compensated
O
O
P
P
I
Pin #
4,6,7
1
2
3
8
5
1
2
3
4
5
Positive power supply
Driver output
Driver inverted output
Not connected for SOP8
Timing cap.
Ground
Timing cap.
Positive power supply
Driver output
Driver inverted output
Ground
Description
Description
Rev. 0.7 Apr 16, 2004
AH280
band-gap,
an

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AH280 Summary of contents

Page 1

... This datasheet contains new product information. Analog 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. General Description AH280 is the integrated Hall sensor owned two complementary outputs for motor’s coil driving, auto locked shutdown and auto restart functions. ...

Page 2

... A necessary S: SOP-8L to specify SP: SOP-8L EP Application Circuit D Power input Anachip Corp. www.anachip.com.tw Control Amp Logic Lock Shutdown Auto restart circuits 1 CT AH280 Package Lead L : Lead Free Blank : Tube or Bulk Blank: Normal A ( Top view ) Coil1 AH280 Brush-less Fan ) 2/7 AH280 ...

Page 3

... Symbol Min. Typ - 100 HYS T = -20°C to +85°C A Symbol Min. Typ - 100 HYS 3/7 AH280 Rating Unit 20 V 500 mA 800 550 mW 1000 °C -20~85 °C -55~150 40 Vdc Min, Typ. Max. Unit - 0.4 - ...

Page 4

... Rotation detection The automatic restart circuit detects a motor lock condition and automatically turns off the output current. When the lock condition is cleared, the IC automatically restarts and allows the motor to run. In the AH280, automatic restart is performed in the Hall input Motor output CT Motor locked ...

Page 5

... T a (。 105 110 115 120 360 320 280 240 。 Front View ) AH280 Blank : normal Lead Free Package ID Code Nth week: 01~52 Year: "1" = 2001 "2" = 2002 Rev. 0.7 Apr 16, 2004 ...

Page 6

... REF [0.165 REF] 2 ± 0.48 0.1 ± [0.019 0.003] ± 0.38 0.03 ± [0.015 0.001] ± 0.03 ± 0.001] 2.006 mm ( Top View) [0.079 inch 6/7 AH280 0.1 ± 0.003] ± 0.73 0.1 ± [0.029 0.003] ° ° ° ° ± 0.38 0.03 ± [0.015 0.001] Rev. 0.7 Apr 16, 2004 ...

Page 7

... AH280 L VIEW "A" 0.015x45 7 (4X) VIEW "A" Nom. Max. 0.063 0.069 - 0.100 0.057 0.059 0.016 0.020 0.008 0.010 0.199 0.209 0.154 0.161 0.050 - 0.236 0.244 0.028 0.050 - 0.004 - 8° 0.115 - 0 ...

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