TB6549F_07 TOSHIBA [Toshiba Semiconductor], TB6549F_07 Datasheet - Page 8

• Manufacturer Part Number: TB6549F_07
• Description: Full-Bridge Driver IC for DC Motors
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

3. Internal Constant-Voltage (5 V) Circuit
4. Charge Pump Circuit
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This IC includes a 5 V power supply for control circuit.
A capacitor for prevention of oscillation should be connected to S-GND associated with the pin V
No other loads should be connected to pin V
This IC has a power monitoring function and turns the output OFF when V
(design target value) or less. With a hysteresis of 0.3 V (design target value), the output are turned ON
when V
This IC has a charge pump circuit for driving the gate for the upper power transistor in the output
circuit. A voltage of V
It takes about 2 ms to boost V
standby pin (while CcpA = 0.22 μF, and CcpB and CcpC are connected through 0.01 μF).
The proper capacitance of the external capacitor varies depending on the V
the constant by referring to the following data. The value of the capacitor between CcpB and CcpC
should be such that, while the motor is being driven, the voltage on the CcpA pin will be kept constant,
typically at V
this capacitance value accordingly.)
<External capacitor>
Reference oscillation is performed by using the internal capacitor.
10 V~15 V
15 V~27 V
V
CC
reg
again reaches 3.3 V (design target value).
CC
Between CcpB and CcpC Between CcpA and GND
+ 5 V. (If a reduced V
0.01 μF~0.047 μF
CC
0.01 μF
+ 5 V (typ.) is generated by connecting an external capacitor to this IC.
V
CPA
CC
up V
CC
CC
V
level causes the voltage on CcpA to start to fall, please adjust
CC
+ 5 V (typ.) after the switching of the input signal from the
reg
8
.
V
0.22 μF
0.22 μF
CC
V
reg
CcpA
CcpB
CcpC
TB6549F/FG/P/PG/HQ
CC
reg
value. Thus, determine
goes down to 3.0 V
2007-3-6
reg
.