|
|
PDF AH2985 Data sheet ( Hoja de datos )
| Número de pieza | AH2985 | |
| Descripción | TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER | |
| Fabricantes | Diodes | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AH2985 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
AH2985
TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Description
The AH2985 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.
To help protect the motor coils, the AH2985 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.
Pin Assignments
(Top View)
AH2985
The AH2985 is available in TO94 package.
12 3 4
1 : VDD
2 : DO
3 : DOB
4 : GND
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
Package: TO94
“Green” Molding Compound
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
TO94
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.
Typical Applications Circuit (Note 4)
12V
VDD
D2
AH2985
VDD DO DOB GND
1234
GND
D1 C
L1 L2
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 AH2985 also includes an internal reverse blocking diode at VDD pin.
AH2985
Document number: DS38175 Rev. 1 - 2
1 of 8
www.diodes.com
September 2015
© Diodes Incorporated
1 page  
Performance Characteristics
(1) TO94
TA(C)
PD(mW)
TA(C)
PD(mW)
25 50 60 70 80
550 440 396 352 308
105 110 115 120 125
198 176 154 132 110
PD (mW)
600
500
400
300
200
100
0
-400
Power Dissipation Curve
25 50 75
85
286
130
88
100
AH2985
90 95 100
264 242 220
135 140 150
66 44
0
125 150
TA (oC)
AH2985
Document number: DS38175 Rev. 1 - 2
5 of 8
www.diodes.com
September 2015
© Diodes Incorporated
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AH2985.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AH2984 | TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER |  Diodes Incorporated |
| AH2985 | TWO PHASE HALL-EFFECT SMART FAN MOTOR CONTROLLER | Diodes |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |