ah280a-pab ETC-unknow, ah280a-pab Datasheet

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ah280a-pab

Manufacturer Part Number
ah280a-pab
Description
Hall-effect Smart Driver
Manufacturer
ETC-unknow
Datasheet
1.AH280A-PAB.pdf (7 pages)
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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ah280a-pab Summary of contents

Page 1

Hall-Effect Smart Fan Driver Features - On chip Hall plate - Built-in Zener diode protection for output driver - Built-in protection diode for power reverse connecting - Rotor-lock detection - Automatically restart after release of motor locking - Adjustable auto ...

Page 2

Hall-Effect Smart Fan Driver Block Diagram Vcc 2 Regulator Hall sensor Ordering Information Wafer Body Blank or P: SIP-5L A necessary S: SOP-8L to specify SP: SOP-8L EP Application Circuit D Power input Anachip Corp. www.anachip.com.tw Control Amp ...

Page 3

Hall-Effect Smart Fan Driver Absolute Maximum Ratings Characteristics Operating Supply Voltage Output Current Power Dissipation Operating Temperature Storage Temperature DO(DOB) Vceo D.C. Voltage Electrical Characteristics Characteristics Internal Zener-protected Voltage Quiescent current Output saturation voltage Charge current Discharge current Automatic self-rotation ...

Page 4

Hall-Effect Smart Fan Driver 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 ...

Page 5

Hall-Effect Smart Fan Driver Performance Characteristics (SIP-5L / SOP-8L) Ta (° (mW) 550 413 358 303 248 220 193 165 600 500 400 300 200 100 0 0 Performance Characteristics (SOP-8L EP) ...

Page 6

Hall-Effect Smart Fan Driver Package Information (1) Package Type: SIP-5L 2-0.3C [0.079-0.012C] ± 3.65 0.1 ± [0.144 0.003] ± 14.3 0.3 ± [0.563 0.012] 0.95 [0.037 Location of sensing point 1.016 mm [0.04 inch] Anachip Corp. www.anachip.com.tw unit ...

Page 7

Hall-Effect Smart Fan Driver (2) Package Type: SOP-8L ( Normal / Expose Pad ) X Expose Pad D 7 (4X) e Dimensions In Millimeters Symbol Min. A 1.40 A1 0.10 A2 1.30 B 0.33 C 0.19 D 4.80 E 3.70 ...

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