MC33363A Motorola, MC33363A Datasheet - Page 7

• Manufacturer Part Number: MC33363A
• Description: HIGH VOLTAGE OFF-LINE SWITCHING REGULATOR
• Manufacturer: Motorola

Oscillator Output
Regulator Output
MOTOROLA ANALOG IC DEVICE DATA
AC Input
Compensation
Capacitor C
(Power Switch
Blanking Input
Drain Current)
Leading Edge
6.5 V
Power Switch
Comparator
PWM Latch
Gate Drive
R
C
Q Output
T
T
Output
PWM
T
8
6
7
I
Current
Shutdown
Mirror
Thermal
Comparator
Oscillator
PWM
4 I
2.25 I
Gnd
Current Limit
4, 5, 12, 13
Comparator
Band Gap
Regulator
Figure 17. Representative Block Diagram
PWM Latch
Normal PWM Operating Range
S
270
R
Figure 18. Timing Diagram
450
Q
Startup
Control
A
Driver
MC33363A
UVLO
OVP
Leading Edge
Startup Input
Blanking
Error
Amplifier
2.6 V
14.5 V/
9.5 V
1
2.6 V
6.0
V CC
16
Compensation
10
Voltage
Feedback Input
11
3
9
Power Switch
Drain
Overvoltage
Protection
Input
Output Overload
2.6 V
0.6 V
Current Limit
Propagation
Delay
Current
Limit
Threshold
DC Output
7