MC33060 circuit diagram of the internal structure

MC33060 is a performance by ON (ON Semi) semiconductor company produces excellent pulse-width modulated voltage-driven devices, the use of fixed-frequency single-ended output, can work in -40 ℃ to 85 ℃. Its internal structure shown in Figure 1 [1], the main features are as follows:

　　1) all of the pulse width modulator integrated circuit;

　　2) Built-linear sawtooth oscillator, external components only one resistor capacitor;

　　3) Built-in error amplifier;

　　4) Built-in 5V reference voltage, 1.5% accuracy;

　　5) Adjustable dead zone control;

　　6) Built-in 200mA drive capability of the transistor provided;

　　7) undervoltage lockout protection;