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PDF AH285 Data sheet ( Hoja de datos )

Número de pieza AH285
Descripción Hall-Effect Smart Fan Motor Controller
Fabricantes Anachip 
Logotipo Anachip Logotipo



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Hall-Effect Smart Fan Motor Controller
AH285
„ Features
- On chip Hall sensor
- Rotor-locked shutdown
- Automatically restart
- Frequency generator (FG) output
- Buil t-in Zener protection for output driver
- Operating voltage: 3.8V~20V
- Output current: IO(AVE) = 500mA for SIP-5/SOT89-5
- Output current: IO(AVE) = 400mA for SOT23-5
- Package: SIP-5L, SOT23-5L, SOT89-5L
„ General Description
AH285 is a monolithic fan motor controller with Hall
sensor’s capability. It contains two complementary
open-drain transistors as motor coil drivers,
automatic lock current shutdown, and recovery
protections. Additional, frequency generator (FG)
output is for speed detection relatively.
To avoid coil burning, rotor-lock shutdown detection
circuit shut down the output driver if the rotor is
blocked and then the automatic recovery circuit will
try to restart the motor. This function repeats while
the rotor is blocked. Until the blocking is removed,
the motor recovers running normally.
„ Pin Configuration
„ Pin Descriptions
Vdd 1
285 ( Front View )
1 : FG
2 : Vdd
3 : DO
4 : DOB
5 : GND
123 45
SIP-5L
5 FG
Vdd
5
DOB
4
GND 2
285
285
Symbol
FG
Vdd
DO
DOB
GND
DO 3
74 DOB
SOT89-5L
123
FG GND DO
SOT23-5
„ Ordering Information
AH285 X - X X X
Description
Frequency generation
Input power
Output pin
Output pin
Ground
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP-5L
W: SOT23-5L
Y: SOT89-5L
Lead
L : Lead Free
Packing
Blank : Bulk
A : Tape & Reel
(for SOT Packages Only)
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. 1.0 Sep 29, 2005
1/9

1 page




AH285 pdf
Hall-Effect Smart Fan Motor Controller
AH285
„ Performance Characteristics (SOT23-5)
Ta (°C) 25 50 60 70 80 90 100 110 120 130 140 150
Pd (mW) 230 184 166 147 129 110 92 74 55 37 18 0
Pd (m W )
300
200
100
0
0
P ow er D issipation C urve
25 50 75 100
„ Performance Characteristics (SOT89-5)
125
150
Ta (C)
Ta (°C)
Pd (mW)
Ta (°C)
Pd (mW)
25 50 60 70 75 80 85 90 95 100
800 640 576 512 480 448 416 384 352 320
105 110 115 120 125 130 135 140 145 150
288 256 224 192 160 128 96 64 32
0
P d (m W )
900
800
700
600
500
400
300
200
100
0
0
P o w e r D is s ip a tio n C u rv e
25
50
75
100
125
150
T a (C )
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Sep 29, 2005
5/9

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