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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Features
* * * * * * * * On chip Hall sensor Rotor-locked shutdown Automatically restart Rotor-state detection (RD) output Built-in Zener protection for output driver Operating voltage: 3.8V~20 V Output current: IO(AVE) = 500mA for SOT89-5L Lead Free Packages: SIP-5L and SOT89-5L
General Description
AH286 is a monolithic fan motor controller with Hall sensor's capability. It contains two complementary open-drain transistors for motor's coil driving, automatic lock current shutdown, and recovery protections. In addition, rotor-state detection (RD) output is for Rotor-state detection. Rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat. Then, the automatic recovery circuit will restart the motor. These protected actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers and runs normally.
Ordering Information
AH286 - X X X
Package P : SIP-5L Y : SOT89-5L
Lead-Free L : Lead-Free
Packing -B : Bulk -7/-13 : Taping
Note:
1.
RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Lead-free
AH286-P AH286-Y
Package Code P Y
Packaging SIP-5 SOT89-5
Quantity 1000 NA
Tube/Bulk Part Number Suffix -B NA
7" Tape and Reel Quantity Part Number Suffix NA NA 2500/Tape & Reel -13
Lead-free
Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Pin Assignment
286 ( Front View )
1 : RD 2 : Vdd 3 : DO 4 : DOB 5 : GND
123 45
Vdd 1 GND 2 DO 3 SOT89-5L 286
5 RD
7 DOB 4
SIP-5L
Pin Descriptions
Symbol RD Vdd DO DOB GND
Description Rotor-state detection Input power Output pin Output pin Ground
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Block Diagram
Vdd 2
Lock Shutdown and Automatic Recovery Regulator
3
Hall Plate
DO
Amp.
Control Logic
4
DOB
5 GND
1 RD
Typical Application Circuit (SIP-5L)
D2 Vdd (12V) R pu D1
1 2 3 4 5
286
Coil 2 Coil 1
RD
GND 48V C1=1uF 48V
12V DC Brush-Less Fan with RD Output Function
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Absolute Maximum Ratings
Characteristics Supply Voltage
(TA = 25C)
Symbol Vdd SIP5/SOT89-5 IO(PEAK) SIP5 SOT89-5 Topr Tstg Tj SIP5 SOT89-5 Rating 24 500 700 550 800 -40 ~ 100 -55 ~ 150 150 227 156 Unit V
Output Current Power Dissipation Operating Temperature Storage Temperature Maximum Junction Temp. Thermal Resistance
IO(AVE) PD
mA mW
C C C C/W
JA
TA TJ Tc
JA JC
Note:
JA
should be confirmed with what heat sink thermal resistance. If no heat sink contacting,
JA
is almost the same as
JC .
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Electrical Characteristics
Characteristics
(TA = 25 C, Vdd =12V, unless otherwise specified)
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage Supply current Output Leakage Current Locked Protection On Locked Protection Off Output saturation voltage Output On resistance RD output Vds Output Zener-breakdown Voltage
Truth Table INH L -
Vdd Idd Ioff Tlrp-on Tlrp-off
VOUT( sat )
Operating Operating VOUT=24V
3.8 0.4 2.4
2.0 < 0.1 0.5 3 375 625 1.25 0.5 42
20 4.0 10 0.6 3.6 500 900 1.67 60
V mA A Sec Sec mV ohm V V
IO=300mA IO=500mA IO=300mA IO=10mA
35
Rds(on) Vol Vz
IN+ L H -
CT L L H
OUT1 H L off
OUT2 L H off
RD L L H
Mode Rotating Rotating Lockup protection activated
Magnetic Characteristics
(TA = 25 C, Vdd = 12V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics Symbol Min. Typ. Max. Unit
Operate Point Release Point Hysteresis
Bop Brp Bhy
10 -60 --
30 -30 60
60 -10 --
Gauss Gauss Gauss
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Operating Characteristics
DOB DO
Output Voltage in Volts
RP
12 10 8 6 4
Output Voltage in Volts
OFF
OFF
12 10 8 6 4
OP
ON
2
OP Vsat
RP
2
ON
Vsat Brp 0 Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
Marking side
S
Marking side
N
( SIP5 )
N
( SOT89-5 )
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Performance Characteristics (SIP-5L)
TA (C) PD(mW) TA (C) PD (mW) 25 550 105 198 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0
P D (m W ) 600 500 400 300 200 100 0 0 25
P o w e r D is s ip a tio n C u rve
50
75
100
125
150 T A (C )
Performance Characteristics
TA (C) 25 50 60
(SOT89-5L)
70
75
80
85
90
95
100
PD (mW)
TA (C)
800
105
640
110
576
115
512
120
480
125
448
130
416
135
384
140
352
145
320
150
PD (mW)
288
256
224
192
160
128
96
64
32
0
PD (mW)
900 800 700 600 500 400 300 200 100 0 0 25
Power Dissipation Curve
50
75
100
125
150
TA(C)
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Marking Information
(1) SIP-5L
( Front View ) Part Number
286
Y WW X x
Internal code a~z: Lead Free Y :Year: "1" = 2001 "2" = 2002 WW : Nth week 01~52 X : Internal Code: A ~ Z
(2) SOT89-5L
5
4
7
Y : Year: 0-9 M : Month: A~L
286 Y M X
X : Internal code a~z: Lead Free
1
2
3
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Package Information ( unit: mm )
(1) Package type: SIP-5L
Location of Sensing Point
2.006 mm [0.079 inch]
( Top View)
1.016 mm [0.04 inch]
1
2
3
4
5
AH286 Rev. 4
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AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
(2) Package type: SOT89-5L
Sensor Location
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AH286 Rev. 4
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