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PDF TA7289FG Data sheet ( Hoja de datos )
| Número de pieza | TA7289FG | |
| Descripción | PWM STEPPING MOTOR DRIVER | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA7289FG (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
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TA7289P/F/FG
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7289P,TA7289F/FG
PWM STEPPING MOTOR DRIVER
The TA7289P, TA7289F/FG are PWM solenoid driver designed
especially for use high efficiency stepping motor control.
It consist of 1.5A peak current drive capable output full bridge
driver, oscillation circuit for PWM switching, 4bit D−A for output
current control and TTL compatible input circuit.
FEATURES
z Wide Range of Operating Voltage
: VCC (opr.) Min. = 6~27 V
z High Current Capability: IO Max = 1.5 A (PEAK)
z LS−TTL Compatible Control Inputs (IN A, IN B)
z Few External Components Required.
z Build−in 4bit DAC.
TA7289F/FG
The TA7289FG is a Pb-free product.
The TA7289P is Sn plated product including Pb.
The following conditions apply to solderability:
*Solderability
1. Use of Sn-37Pb solder bath
*solder bath temperature = 230°C
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
2. Use of Sn-3.0Ag-0.5Cu solder bath
*solder bath temperature = 245°C
*dipping time = 5 seconds
*the number of times = once
*use of R-type flux
Weight
HDIP14−P−500−2.54A : 3.00g (Typ.)
HSOP20−P−450−1.00 : 0.79g (Typ.)
1 2006-3-2
1 page  
TA7289P/F/FG
Sawtooth OSC circuit consists of Q1 through Q4 and R1 through R3.
R1 and R2 are voltage divider of 5 V build−in regulator.
Q1 is turned “off” when V4 is less than the voltage of 2.5 V + VBE Q4 + VBE Q3 approximately equal to 3.8 V. V4
is increased by C1 charging of I4. Q1 and Q2 are turned “ON” when V4 becomes V4 − H level.
Lower level of V4 (V4 − L) is equal to VBE Q4 + VBE Q3 + VSAT Q1 approximately equal to 1.5 V.
V4 is calculated by following equation.
V4 = 5·(1 − e −
1
C1·R3
·t) .................................................(1)
Assuming that V4 = 1.5 V (t = t1) and=3.8 V (t = t2).
C1 is external capacitance connected to Pin (4) (or (5)) and R3 is on−chip 20 kΩ resistor.
Therefore, OSC frequency is calculated as follows.
t1 = −C1·R3·1n (1 −
1.5
5
)
................................................(2)
t2 = −C1·R3·1n (1 −
3.8
5
) ................................................(3)
fOSC =
1
t1 − t2
1
=
C1· ( R 3·1n
(1
−
1.5
5
)
−
R 3·1n
(1 −
3.8
5
))
=
1
21.4 C1
(kHz) (Unit
of
C1
is µF)
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC
Supply Voltage
Reference Voltage
TA7289P
Output Current
TA7289F/FG
TA7289P
TA7289F/FG
Power Dissipation
TA7289P
TA7289F/FG
Operating Temperature
Storage Temperature
Note: NO HEAT SINK
SYMBOL
VCC
Vref
VIN
VI
IO (MAX.)
IO (AVE.)
PD (Note)
Topr
Tstg
RATING
30
30
7
2
1.5
0.8
0.7
0.3
2.3
1.0
−30~85
−55~150
UNIT
V
A
W
°C
°C
5 2006-3-2
5 Page 
TA7289F/FG
TA7289P/F/FG
11 2006-3-2
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TA7289FG.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TA7289F | PWM STEPPING MOTOR DRIVER | Toshiba Semiconductor |
| TA7289FG | PWM STEPPING MOTOR DRIVER | Toshiba Semiconductor |
| TA7289FG | PWM STEPPING MOTOR DRIVER | Toshiba Semiconductor |
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