mc44603 ON Semiconductor, mc44603 Datasheet - Page 11

• Manufacturer Part Number: mc44603
• Description: Mixed Frequency Mode Greenline Pwm Controller
• Manufacturer: ON Semiconductor

MOTOROLA ANALOG IC DEVICE DATA
(Soft–Start)
V OVP Out
V disable1
V disable2
V CC prot
V stup–th
V Pin 11
UVLO1
0.3 mA
Output
17 mA
V CC
V ref
I CC
V Demag In
V Demag Out
V Demag In
Figure 27. Starting Behavior and Overvoltage Management
Output
(Pin 3)
Startup
Ï Ï Ï Ï
Ï Ï
No–Take Over
Figure 28. Demagnetization
Demagnetization
Management
MC44603
Restart
Ï Ï Ï Ï Ï Ï Ï Ï
Ï Ï Ï Ï Ï Ï Ï Ï
Ï Ï Ï Ï Ï Ï Ï Ï
Normal Mode
V Demag Out
Loop Failure
Oscillator
>2.0 µs
Buffer
Output
Ï Ï Ï
Ï Ï Ï
Ï Ï Ï
11