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MC44604 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. MC44604
Description  High Safety Pulsed Mode Standby GreenLine TM PWM Controller
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC44604 Datasheet(HTML) 5 Page - ON Semiconductor

 
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MC44604
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ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V [Note 8], Rref = 10 kW, CT = 820 pF, for typical values TA = 25°C,
for min/max values TA = −25° to +85°C [Note 9], unless otherwise noted.)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(VFeedback (pin14) = 2.3 V and Vfoldback (pin6) = 1.2 V)
7
Vcs−th
0.93
0.96
1.00
V
Input Bias Current
7
Ics−ib
−10
−2.0
mA
Propagation Delay (Note 10)
in Normal Mode
in Standby Mode
tCS−NM
tCS−stby
120
120
200
200
ns
OVERVOLTAGE SECTION
Protection Threshold Level on VOVP
6
VOVP−th
2.42
2.5
2.58
V
Propagation Delay (VOVP > 2.58 V to Vout Low)
1.0
3.0
ms
Protection Level on VCC
VCC prot
V
TA = 0° to +70°C
16.1
17
17.9
TA = −25° to +85°C
15.9
18.1
Input Resistance
k
W
TA = 0° to +70°C
1.5
2.0
3.0
TA = −25° to +85°C
1.4
3.4
FOLDBACK SECTION (Note 11)
Current Sense Voltage Threshold (Vfoldback (pin5) = 0.9 V)
5
Vcs−th
0.84
0.88
0.89
V
Foldback Input Bias Current (Vfoldback (pin5) = 0 V)
5
Ifoldback−lb
−6.0
−2.0
mA
CLAMP ERROR AMPLIFIER INPUT
Clamp Level (@ l = 30 mA)
12
Vcl
4.5
4.7
4.9
V
STANDBY PULSED MODE SECTION
Standby Initialization Current Ratio (S1 closed)
15
Iinit/Iref
126
140
154
Minimum Initialization Current Pulse Width (Note 12)
Tinit
1.0
ms
Standby On Detection Current Ratio
15
Idet/Iref
0.34
0.38
0.42
Standby Regulation Current Ratio
15
Ireg/Iref
18
20.5
23
Standby Bias Current (S1 and S2 open;
0 V
t Vpin15 t Vstup−th) (Note 13)
15
Istby−ib
−1.0
2.0
mA
STANDBY CURRENT SET
Peak Standby Current Setting Ratio
9
TA = 0° to +70°C
Ipk−stby/Iref
0.37
0.4
0.43
TA = −25° to +85°C
0.36
0.4
0.44
Standby Current Sense Threshold Ratio (Note 14)
7
Vpin9/Vcs−st
2.4
2.6
2.9
TOTAL DEVICE
Power Supply Current
ICC
mA
Startup (Note 13)
0.3
0.45
Operating TA = −25° to +85°C (Note 9)
16
20
24
Power Supply Zener Voltage (ICC = 25 mA)
VZ
18.5
V
Thermal Shutdown
155
°C
8. Adjust VCC above the startup threshold before setting to 12 V.
9. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
10. Current Sense Input to Output at VTH of MOS transistor = 3.0 V.
11. This function can be inhibited by connecting pin 5 to VCC.
12. This is the minimum time during which the pin 15 current must be higher than Iinit to enable the detection of the transition normal to standby mode.
13. Tested using VCC = 6.0 V, 9.0 V, 13.5 V, the MC44604 being off.
14. Tested using Vpin9 = 0.2 V, 0.4 V, 0.6 V, 0.8 V, 1.0 V.


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