TB6549F/FG/P/PG/HQ

2007-3-6

8

3.

Internal Constant-Voltage (5 V) Circuit

• This IC includes a 5 V power supply for control circuit.

(design target value) or less. With a hysteresis of 0.3 V (design target value), the output are turned ON

4.

Charge Pump Circuit

• This IC has a charge pump circuit for driving the gate for the upper power transistor in the output

standby pin (while CcpA

= 0.22 μF, and CcpB and CcpC are connected through 0.01 μF).

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,

this capacitance value accordingly.)

<External capacitor>

Between CcpB and CcpC

Between CcpA and GND

10 V~15 V

0.01

μF~0.047 μF

0.22

μF

15 V~27 V

0.01

μF

0.22

μF

• Reference oscillation is performed by using the internal capacitor.

CcpC

CcpB

CcpA