Output Circuit
TA7288P
Output “H” Voltage
z Operation by Vref voltage
Voltage, which is applied to Vref, of which high output, 2VBE is applied to base A of the Q2 (power
transistor) and low voltage, Q2VBE is output as VOUT (H) by the Vref circuit.
VOUT = Vref+2VBE−Q2VBE
≒Vref+0.7 (V)
z Vref
Vref terminal required to connect to VS terminal for stable operation in case of no requirement of
VOUT control.
Function
Input
IN1
IN2
IN3
OUT1
0
0
1/0
∞
1
0
0
H
1
0
1
L
0
1
0
H
0
1
1
L
1
1
1/0
L
∞:
High impedance
Note: Inputs are all high active type.
Output
OUT2
∞
L
H
∞
∞
L
OUT3
∞
∞
∞
L
H
L
M1
STOP
CW/CCW
CCW/CW
STOP
STOP
BRAKE
Mode
M2
STOP
STOP
STOP
CW/CCW
CCW/CW
BRAKE
4
2007-06-27