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PDF KA3080 Data sheet ( Hoja de datos )
| Número de pieza | KA3080 | |
| Descripción | 3-Phase BLDC Motor Driver | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de KA3080 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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www.fairchildsemi.com
KA3080/KA3080D/KA3080DM
3-Phase BLDC Motor Driver
Features
• 3-Phase, Full-Wave, Linear BLDC Motor Driver With 3
Hall Sensors
• Built-in TSD (Therml Shutdown) Circuit
• Built-in Torque Ripple Control Circuit
• Built-in Output Current Limiter
• Motor Speed Control
• High Output Current
• Built-in FG Amplifier With Sinusoidal Waveforms
• Built-in Hall Amplifier
• Built-in CW and CCW Circuit
Description
The KA3080 , KA3080D, KA3080DM are a monolithic
integrated circuit, and it is suitable for 3-phase capstan motor
driver for VCR system.
32-SDIPH-400
28-SSOPH-375
28-SSOPH-375SG2
Target Application
• Video Cassette Recorder (VCR) Capstan Motor
• Other 3-Phase BLDC Motor
Ordering Information
Device
Package
Operating Temp.
KA3080C
32-SDIPH-400
-25°C ~ +75°C
KA3080BD 28-SSOPH-375 -25°C ~ +75°C
KA3080BDTF 28-SSOPH-375 -25°C ~ +75°C
KA3080BD3 28-SSOPH-375SG2 -25°C ~ +75°C
KA3080BD3TF 28-SSOPH-375SG2 -25°C ~ +75°C
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.2
1 page  
Internal Block Diagram (28-SSOPH)
KA3080/KA3080D/KA3080DM
28 27 26 25 24 23 22
FIN
21 20 19 18 17 16 15
−+ −+ −+
LOGIC
TSD
12
−++
+− +−
2.5V
+
−
1.8k
56k
−
+
CW&CCW
1.25V
345 67
8 9 10 11 12 13 14
FIN
5
5 Page 
KA3080/KA3080D/KA3080DM
Application Information (32-SDIPH: Ο , 28-SSOPH: (#))
1. Hall Input
The input signal of the hall sensor requires larger amplitude than 100mVo-p. The operating voltage level of the hall sensor is
from 1.2V ~ VCC1-0.8V.
(15) 1
(17) 3
(19) 5
VCC1
2 (16)
4 (18)
6 (20)
More than 1.7V
More than 100mVo-p
More than 1.3V
2. Output Current Detection
16 (1) VCC2
13 (26) UOUT
14 (27) VOUT
15 (28) WOUT
RS (0.5Ω)
11
(22 Pin)
12
(25 Pin)
The RS (Output current sensing resistor ) is connected to GOUT and Approx. 0.5Ω, It converts motor current to a voltage
which is feedback amplifier.
3. Motor Speed Control (Input Current Limitation)
The maxmum output current is limitted by the ILIM (Current limiting) voltage.
If current limitation is not in use then connect it to VCC1.
The control gain is approx. 0.67A/V as follows.
GML = ∆IO / ∆VLIM = (IO2 − IO1) / (VLIM2 − VLIM1), where VLIM1 = 1.45V → Output current=IO1
VLIM2 = 1.55V → Output current=IO2
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet KA3080.PDF ] | |
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