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PDF TA8479F Data sheet ( Hoja de datos )
| Número de pieza | TA8479F | |
| Descripción | 3 PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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TA8479F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8479F
3 PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR VIDEO CAMERA
TA8479F is a capstan / cylinder motor 1−chip driver IC for video
camera. Enclosing the capstan and cylinder sections in one
package saves space and makes patterning the set board easier.
FEATURES
l Capstan / Cylinder Motor Driver in 1 Chip
l 3 Phase Full Wave Drive~Voltage Control / Voltage Drive
Mode
l Package: QFP44
l Built−in Thermal Shutdown Circuit
<Capstan section>
· Soft switching drive
· Bi−direction drive
· Built−in standby circuit
<Cylinder section>
· Hard switching drive
· One direction drive
Weight : 1.15 g (Typ.)
1 2001-06-13
1 page  
l FR circuit
TA8479F
H: Reverse rotation
L: Forward rotation
In an open state, the circuit causes the motor to rotate forward.
l Output circuit
This IC uses an amplitude control mode to control output currents by changing output amplitude.
<Cylinder section>
l Hall amp circuit
The Hall amp is a differential amp, and the common−phase input voltage range is YVCMR = 1.3~YVCC −1.3 [V].
For signals from Hall elements, input sinusoidal waves. Noise, etc., which causes malfunction when found in
signals, must be prevented by a condenser.
This circuit has a high gain amp at the latter stage, making the input sensitivity as high as about 20 mVp-p (Typ.).
5 2001-06-13
5 Page 
TA8479F
CYLINDER SECTION (YVCC = 5.0 V, YVM = 3 V, Ta = 25°C)
CHARACTERISTIC
Supply Current
Input Current
Hall Amp Circuit
Common−Phase Input
Voltage Range
SYMBOL
YICC
YIM
YIH
YVCMR
TEST
CIRCUIT
1
TEST CONDITION
Output open
2 Output open
3 YVCMR = 2.5 V
4
MIN
―
―
―
1.3
Output Circuit
Input Sensitivity
Saturation Voltage
(Upper Side+Lower
side)
Leakage Current
(Upper Side)
YVH
YVsat
(H + L)
YVOL (H)
5 (Note) 20
6 IO = 1.0 A, YVH = 30 mVp−p ―
9 YVM = 10 V
―
Leakage Current
(Lower Side)
Thermal Shutdown Operating
Temperature
YVOL (L)
TSD
10 YVM = 10 V
―
―
―
TYP. MAX UNIT
5 8 mA
25 40 mA
― 5 µA
―
YVCC
−1.3
V
― ― mVp−p
2.2 2.7
V
― 10 µA
― 10 µA
170 ―
°C
Note: Defined by output functioning
11 2001-06-13
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet TA8479F.PDF ] | |
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