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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Features
* * * * * * * * * On chip Hall sensor Rotor-locked shutdown Automatically restart Frequency generator (FG) output Built-in Zener protection for output driver Operating voltage: 3.8V~28V Output current: IO(AVE) = 400mA Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Lead Free Packages: SIP-5L and SOT89-5L
General Description
AH288 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. 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
AH288 - X X X
Package P: SIP-5L Y: SOT89-5L
Lead L : Lead Free
Packing -B : -13 : Bulk 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
AH288-P AH288-Y
Package Code P Y
Packaging (Note 2) 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.
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Pin Assignments
288
( Front View )
1 : FG 2 : VCC 3 : DO 4 : DOB 5 : GND
VCC 1 GND 2 DO 3 SOT89-5L 288
5 FG
7 4 DOB
123 45
SIP-5L
Pin Descriptions
Name FG VCC DO DOB GND Description Frequency generation Input power Output pin Output pin Ground
Block Diagram
Vdd 2
Lock shutdown and Automatic recovery Regulator
3
Hall Plate
DO
Amp.
Control Logic
4
DOB
5 GND
1 FG
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Typical Application Circuit
D2 24V
R pu D1
1 2
288
Coil 2
3 4 5
Coil 1
GND FG
48V
C1=1uF
48V
24V DC Brush-less Fan with FG output function Characteristics Supply Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Maximum Junction Temperature Thermal Resistance JA IO(AVE) PD Topr Tstg Tj SIP5 SOT89-5 Symbol VCC SIP5/SOT89-5 IO(PEAK) SIP5 SOT89-5 Rating 30 400 700 550 800 -40 ~ 100 -55 ~ 150 150 227 156 Unit V mA mW C C C C/W C/W
Absolute Maximum Ratings
( TA = 25C )
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 .
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Electrical Characteristics ( TA = 25 C, Vdd = 24V, unless otherwise specified )
Characteristics Supply Voltage Supply current Output Leakage Current Locked Protection On Locked Protection Off Output saturation voltage Output On resistance FG output Vds Output Zener-breakdown Voltage
*Note:
Symbol Vdd Icc Ioff Tlrp-on Tlrp-off
VOUT( sat )
Conditions Operating Operating VOUT = 24V
Min. 3.8 0.4 2.4 42
Typ. 2 < 0.1 0.46 2.76 450 680 2.25 0.3 55
Max. 28* 4 10 0.6 3.6 700 800 3.5 0.5 65
Unit V mA A Sec Sec mV ohm V V
Rds(on) Vol Vz
IO = 200mA IO = 300mA IO = 200mA IO = 10mA
Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.
Truth Table INH L -
IN+ L H -
CT L L H
OUT1 H L off
OUT2 L H off
FG H L -
Mode Rotating Rotating Lockup protection activated
Magnetic Characteristics ( TA = 25 C, VCC = 24V, unless otherwise specified )
( 1Mt = 10 Gauss ) Characteristics Operate Point Release Point Hysteresis Symbol Bop Brp Bhy Min. 10 -60 Typ. 30 -30 60 Max. 60 -10 Unit Gauss Gauss Gauss
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Operating Characteristics
DOB
Output Voltage in Volts
DO
RP
24 20 16 12 8
Output Voltage in Volts
OFF
OFF
24 20 16 12 8
OP
ON
4
OP Vsat
RP
4
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 )
AH288 Rev. 4
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AH288
HIGH VOLTAGE 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
Pd (mW ) 600 500 400 300 200 100 0 0 15 30
Power Dissipation Curve
45
60
75
90
105 100
120
135
150 Ta (C)
Performance Characteristics ( SOT89-5L )
TA (C) PD (mW) TA (C) PD (mW)
P D (m W )
900 800 700 600 500 400 300 200 100 0 0 25 50 75 100 125 150
25 800 105 288
50 640 110 256
60 576 115 224
70 512 120 192
75 480 125 160
80 448 130 128
85 416 135 96
90 384 140 64
95 352 145 32
100 320 150 0
P ow er D issipation C urve
T A ( C )
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Marking Information
(1) SIP-5L
( Front View ) Part Number
288
Y WW X X
L : Lead Free Package 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
288 Y M X
X : Internal code a~z : Lead Free
1
2
3
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Package Information
(1) Package type: SIP-5L
(unit: mm)
Location of Sensing Point
2.006 mm [0.079 inch]
( Top View)
1.016 mm [0.04 inch]
1
2
3
4
5
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Package Information ( Continued )
(2) Package type: SOT89-5L
Sensor Location
AH288 Rev. 4
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AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
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.
AH288 Rev. 4
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