AH2984-PG-B Diodes Inc, AH2984-PG-B Datasheet

IC FAN CONTROLLER BLDC 4SIP

AH2984-PG-B

Manufacturer Part Number
AH2984-PG-B
Description
IC FAN CONTROLLER BLDC 4SIP
Manufacturer
Diodes Inc
Type
Two Phase Hall Effect Smart Fan Motor Controllerr
Datasheet

Specifications of AH2984-PG-B

Applications
Fan Controller, 2 Phase
Number Of Outputs
1
Current - Output
500mA
Voltage - Supply
2.5 V ~ 15 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Through Hole
Package / Case
4-SIP
Product
Fan / Motor Controllers / Drivers
Operating Supply Voltage
2.5 V to 15 V
Supply Current
3.5 mA
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
AH2984-PG-BDI

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AH2984-PG-B
Manufacturer:
DIODES
Quantity:
2 000
The AH2984 is a single-chip solution for driving two-coil
brushless direct current (BLDC) fans and motors. The device
includes a Hall-effect sensor, dynamic offset correction and
two complementary open-drain output drivers with
Zener diode protection
voltage.
To help protect the motor coils, the AH2984 provides Rotor
Lock Protection which shuts down output drives if rotor lock is
detected. The device automatically re-starts when the rotor
lock is removed. Over temperature shutdown provides
thermal protection for the device.
The AH2984 is available in SIP4 and SOT89-5L packages.
Features
Description
AH2984
Document number: DS31698 Rev. 3 - 2
Single-chip solution
Operating Voltage: 2.5V to 15V
Built-in Hall sensor and input amplifier
Rotor Lock Protection (Lock detection, output shutdown
and automatic re-start)
Built-in reverse voltage protection diode
Built-in Zener protection for output drivers
Average output current up to 500mA
Packages: SIP-4L and SOT89-5L
“Green” Molding Compound
. It is optimized for low start-up
internal
www.diodes.com
TWO PHASE HALL-EFFECT SMART FAN MOTOR
1 of 11
Pin Assignments
Applications
Two-coil BLDC Cooling Fans
Low Voltage/ Low Power BLDC Motors
GND
Vdd
DO
1
2
3
(Top View)
1 2
(Top View)
AH2984
SOT89-5L
AH2984
SIP-4L
3
4
7 4
5
CONTROLLER
AH2984
1 : Vdd
2 : DO
3 : DOB
4 : GND
GND
NC
DOB
© Diodes Incorporated
May 2010

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AH2984-PG-B Summary of contents

Page 1

... Zener diode protection . It is optimized for low start-up voltage. To help protect the motor coils, the AH2984 provides Rotor Lock Protection which shuts down output drives if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. Over temperature shutdown provides thermal protection for the device ...

Page 2

... D1 Notes (Zener Diode) and Capacitor C are for power stabilization. Recommended value 1uF/ 50V (E-Cap). Diode D2 is optional and helps to protect the device and fan coils from reverse power conditions. The AH2984 also includes an internal reverse blocking diode at Vdd pin. Pin Descriptions ...

Page 3

... AH2984 Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR Lock detect, Shutdown and Automatic re-start Control Logic Amp. 4 GND Lock detect, Shutdown and Automatic re-start Control Logic Amp. 2 GND www.diodes.com AH2984 CONTROLLER DOB DOB 4 May 2010 © Diodes Incorporated ...

Page 4

... TWO PHASE HALL-EFFECT SMART FAN MOTOR (T = 25°C) A Conditions SIP-4L SOT89-5L SIP-4L SOT89- θ JA θ 25°C) A Conditions Operating Operating www.diodes.com AH2984 CONTROLLER Rating Unit 18 V -15 V 500 mA 800 550 mW 800 mW °C -55 ~ 150 °C 150 °C/W 227 °C/W 156 Tc will almost be the same as θ ...

Page 5

... Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR = 25°C, Vdd = 12V; unless otherwise specified, Note 4) Conditions Operating, Vdd=12V Toff/Ton I = 300mA 500mA O (Note 4) = 25°C, Vdd = 2.5V to 15V, Note 5) Min 5 - www.diodes.com AH2984 CONTROLLER Min Typ. Max Unit 2.0 3.5 5 0.25 - Sec - 3.25 - Sec - 13 ...

Page 6

... Magnetic Flux Density in Gauss S Marking side N ( SIP-4L ) AH2984 Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR OFF OFF OP RP Vsat Vsat Bop Magnetic Flux Density in Gauss S N (SOT89-5L www.diodes.com AH2984 CONTROLLER Brp 0 Bop Marking side May 2010 © Diodes Incorporated ...

Page 7

... tio rve 576 512 480 448 115 120 125 130 224 192 160 128 Pow er D iss ipation C urve www.diodes.com AH2984 CONTROLLER 100 286 264 242 220 130 135 140 150 105 100 416 384 ...

Page 8

... Ordering Information Package P : SIP- SOT89-5L Package Packaging Device Code (Note 6 & 7) AH2984-PG-B P SIP-4L AH2984-YG-13 Y SOT89-5L Notes: 6. 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 Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www ...

Page 9

... Package type: SIP-4L 0.7 mm Active Area Depth Package Dimension AH2984 Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR (All Dimensions in mm) Marking side 1.95 士 0.1mm 1.1 士 0.1mm www.diodes.com AH2984 CONTROLLER Sensor Location May 2010 © Diodes Incorporated ...

Page 10

... Package Outline Dimensions (2) Package type: SOT89-5L Sensor location AH2984 Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR (Continued www.diodes.com AH2984 CONTROLLER May 2010 © Diodes Incorporated ...

Page 11

... 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 AH2984 Document number: DS31698 Rev TWO PHASE HALL-EFFECT SMART FAN MOTOR IMPORTANT NOTICE LIFE SUPPORT www.diodes.com AH2984 CONTROLLER May 2010 © Diodes Incorporated ...

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