MC44603 Datasheet, PDF (4/24 Pages) ON Semiconductor – MIXED FREQUENCY MODE GREENLINE PWM CONTROLLER

MC44603
ELECTRICAL CHARACTERISTICS (continued) (VCC and VC = 12 V, [Note 3], Rref = 10 kΩ, CT = 820 pF, for typical values TA = 25°C,
for min/max values TA = –25° to +85°C [Note 4], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
DEMAGNETIZATION DETECTION SECTION (Note 9)
Demagnetization Detect Input
Demagnetization Comparator Threshold (VPin ₉ Decreasing)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (Vdemag = 65 mV)
Vdemag–th
50
65
80
mV
–
–
0.25
–
µs
Idemag–lb
–0.5
–
–
µA
Negative Clamp Level (Idemag = –2.0 mA)
CL(neg)
–
–0.38
–
V
Positive Clamp Level (Idemag = 2.0 mA)
CL(pos)
–
0.72
–
V
SOFT–START SECTION (Note 11)
Ratio Charge Current/Iref
TA = 0° to +70°C
TA = –25° to +85°C
Iss(ch)/Iref
–
0.37
0.4
0.43
0.36
–
0.44
Discharge Current (Vsoft–start = 1.0 V)
Idischarge
1.5
5.0
–
mA
Clamp Level
Vss(CL)
2.2
2.4
2.6
V
Duty Cycle (Rsoft–start = 12 kΩ)
Duty Cycle (Vsoft–start _{(Pin 11)} = 0.1 V)
Dsoft–start _12k 36
42
49
%
Dsoft–start
–
–
0
OVERVOLTAGE SECTION
Protection Threshold Level on VOVP
Propagation Delay (VOVP > 2.58 V to Vout Low)
VOVP–th
2.42
2.5
2.58
V
1.0
–
3.0
µs
Protection Level on VCC
TA = 0° to +70°C
TA = –25° to +85°C
Input Resistance
TA = 0° to +70°C
TA = –25° to +85°C
VCC _prot
V
16.1
17
17.9
15.9
–
18.1
–
kΩ
1.5
2.0
3.0
1.4
–
3.4
FOLDBACK SECTION (Note 10)
Current Sense Voltage Threshold (Vfoldback _{(Pin 5)} = 0.9 V)
Foldback Input Bias Current (Vfoldback _{(Pin 5)} = 0 V)
VCS–th
0.86
0.89
0.9
V
Ifoldback–lb –6.0
–2.0
–
µA
STANDBY SECTION
Ratio IR _{P Stby/Iref}
TA = 0° to +70°C
TA = –25° to +85°C
IR _{P Stby/Iref}
–
0.37
0.4
0.43
0.36
–
0.44
Ratio Hysteresis (Vh Required to Return to Normal Operation from Standby
Vh/VR _{P Stby}
–
Operation)
TA = 0° to +70°C
TA = –25° to +85°C
1.42
1.5
1.58
1.4
–
1.6
Current Sense Voltage Threshold (VR _{P Stby (Pin 12)} = 1.0 V)
VCS–Stby
0.28
0.31
0.34
V
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(Vfeedback _{(Pin 14)} = 2.3 V and Vfoldback _{(Pin 6)} = 1.2 V)
Input Bias Current
Propagation Delay (Current Sense Input to Output at VTH of
MOS transistor = 3.0 V)
VCS–th
ICS–ib
–
0.96
1.0
1.04
V
–10
–2.0
–
µA
–
120
200
ns
TOTAL DEVICE
Power Supply Current
Startup (VCC = 13 V with VCC Increasing)
Operating TA = –25° to +85°C (Note 3)
Power Supply Zener Voltage (ICC = 25 mA)
Thermal Shutdown
ICC
mA
–
0.3
0.45
13
17
20
VZ
18.5
–
–
V
–
–
155
–
°C
NOTES: 13. Adjust VCC above the startup threshold before setting to 12 V.
14. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
19. This function can be inhibited by connecting Pin 8 to Gnd. This allows a continuous current mode operation.
10. This function can be inhibited by connecting Pin 5 to VCC.
11. The MC44603 can be shut down by connecting the Soft–Start pin (Pin 11) to Ground.
4
MOTOROLA ANALOG IC DEVICE DATA