http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Diodes Semiconductor Electronic Components Datasheet


AH2984

TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER



No Preview Available !

AH2984 pdf
AH2984
TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Description
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 internal Zener diode protection. It is
optimized for low start-up voltage.
Pin Assignments
(Top View)
AH2984
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 SOT89-5 packages.
12 3 4
SIP-4
1 : VDD
2 : DO
3 : DOB
4 : GND
(Top View)
Features
• 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-4 and SOT89-5
• “Green” Molding Compound
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Vdd 1
5 NC
GND 2 AH2984
GND
DO 3
74 DOB
SOT89-5
Applications
• Two-coil BLDC Cooling Fans
• Low Voltage/ Low Power BLDC Motors
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH2984
Document number: DS31698 Rev. 4 - 2
1 of 10
www.diodes.com
December 2013
© Diodes Incorporated



No Preview Available !

AH2984 pdf
Typical Applications Circuit (Note 4)
(1) For SIP-4
12V
Vdd
D2
AH2984
Vdd DO DOB GND
1234
GND
D1 C
(2) For SOT89-5
Vdd (12V)
12V Brushless DC Fan
D2
L1
L2
AH2984
D1 C
54
NC GND DOB
AH2984
Vdd GND DO
1 23
L1
L2
GND
12V Brushless DC Fan
Note: 4. D1 (Zener Diode) and Capacitor C are for power stabilization. Recommended value of C is 1μF/ 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
Pin Name
VDD
DO
DOB
GND
NC
SIP-4
1
2
3
4
SOT89-5
1
3
4
2
5
Description
Input Power
Output Pin
Output Pin
Ground
No Connection
AH2984
Document number: DS31698 Rev. 4 - 2
2 of 10
www.diodes.com
December 2013
© Diodes Incorporated



Part Number AH2984
Description TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Maker Diodes Incorporated - Diodes Incorporated
Total Page 10 Pages
PDF Download
AH2984 pdf
Download PDF File
AH2984 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
AH291 Low Voltage Hall-Effect Smart Fan Motor Controller AH291
ETC
PDF
AH291 Low Voltage Hall-Effect Smart Fan Motor Controller AH291
ETC
PDF
AH291 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER AH291
Diodes Incorporated
PDF
AH292 Low Voltage Hall-Effect Smart Fan Motor Controller AH292
ETC
PDF
AH292 Low Voltage Hall-Effect Smart Fan Motor Controller AH292
ETC
PDF
AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER AH292
Diodes Incorporated
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components