AH288-PL-B Diodes Inc, AH288-PL-B Datasheet

IC HALL FAN CTRLR 400MA SOT89-5

AH288-PL-B

Manufacturer Part Number
AH288-PL-B
Description
IC HALL FAN CTRLR 400MA SOT89-5
Manufacturer
Diodes Inc
Datasheet

Specifications of AH288-PL-B

Applications
Fan Controller, Brushless (BLDC)
Number Of Outputs
2
Current - Output
400mA
Voltage - Supply
3.8 V ~ 28 V
Operating Temperature
-40°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
SOT-89-5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Other names
AH288-PL-BDI
Features
Typical Application Circuit
AH288 Rev. 12
DS31040
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: I
Lead Free Package: SOT89-5L (Note 1)
SOT89-5L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 2)
FG
Note: The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to
Vdd (24V)
D3
be E-Cap., luF/25V; D3 is recommended to be Zener Diode, V
value need to be fine tuned to optimize design for different coils and power suppliers .
O(AVE)
* Rpu : typical 10 Kohm
= 400mA
24V DC Brush-less Fan with FG output function
D1
C1
R
pu
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
www.diodes.com
1 of 9
1
5
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.
288
GND
D2
2
4
3
Z
=27V. Which C1and D3
Coil2
48V
Coil1
48V
CONTROLLER
©
Diodes Incorporated
AH288
APRIL 2010

Related parts for AH288-PL-B

AH288-PL-B Summary of contents

Page 1

... AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR 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 ...

Page 2

... AH288-YL-13 Y AH288-YG-13 Y Notes: 1. AH288-YL-13 will be replaced by AH288-YG- Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 3. 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. 4. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website http://www ...

Page 3

... Block Diagram Vdd 2 Regulator Hall Plate Amp. AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR Lock shutdown and Automatic recovery Control Logic 1 GND www.diodes.com AH288 CONTROLLER DO DOB APRIL 2010 © Diodes Incorporated ...

Page 4

... Characteristic Vdd Supply Voltage (Note 6) T Operating Ambient Temperature A Notes: 6. Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil. AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR (T = 25°C) A Parameter I ...

Page 5

... Operate Point Brp Release Point Bhy Hysteresis Notes: 7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering. AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR = 25 °C, Vdd = 24V, unless otherwise specified Conditions ...

Page 6

... Operating Characteristics DOB Brp 0 Magnetic Flux Density in Gauss AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR OFF OFF OP RP Vsat Vsat Bop Magnetic Flux Density in Gauss S Marking side N ( SOT89- www.diodes.com AH288 CONTROLLER Brp 0 Bop APRIL 2010 © Diodes Incorporated ...

Page 7

... P (mW) 288 256 Marking Information (1) SOT89-5L ( Top View ) 5 288 AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR (SOT89-5L 576 512 480 448 115 120 125 130 224 192 160 128 Power Dissipation Curve Year : 0 Week : A~Z : 1~26 week; a~z : 27~52 week; ...

Page 8

... Package Information (1) Package type: SOT89-5L Sensor Location AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR (All Dimensions in mm www.diodes.com AH288 CONTROLLER APRIL 2010 © Diodes Incorporated ...

Page 9

... Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com AH288 Rev. 12 DS31040 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR IMPORTANT NOTICE ...

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