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MC44605 Datasheet(PDF) 6 Page - ON Semiconductor

Part No. MC44605
Description  High Safety, Latched Mode, GreenLine TM PWM Controller for (Multi) Synchronized Applications
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC44605 Datasheet(HTML) 6 Page - ON Semiconductor

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MC44605
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ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V, Rref = 10 kW, CT = 2.2 nF, for typical values TA = 25°C, for
min/max values TA = −25° to +85°C unless otherwise noted.) (Note 14)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
DISABLING BLOCK SECTION
Delay Pulse Width
TWSCD
4.0
ms
Ratio (EHTOVP and WSCD Disabling Capacitor Charge Current)Iref
IDis−H/Iref
90
100
110
%
Ratio (MPL and OHD Disabling Capacitor Charge Current)Iref
IDis−L/Iref
2.7
3.1
3.5
%
Minimum VCC Value Enabling the Disabling Block Latch (Note 15)
VCCDis
1.0
5.0
V
TOTAL DEVICE
Power Supply Current
ICC
mA
Startup−Up (VCC = 5.0 V with VCC increasing)
0.35
0.55
Startup−Up (VCC = 9.0 V with VCC increasing)
0.35
0.55
Startup−Up (VCC = 12 V with VCC increasing)
0.35
0.55
Operating TA = −25°C to +85°C (Note 16)
20
25
Disabling Mode (VCC = 6.0 V) (Note 17)
0.55
Power Supply Zener Voltage (ICC = 35 mA)
VZ
18.5
V
Thermal Shutdown
155
°C
14. Adjust VCC above the startup threshold before setting to 12 V. Low duty cycle pulse techniques are used during test to maintain junction
temperature as close to ambient as possible.
15. Once a fault detection activated it, the Disabling Block Latch gets reset when the VCC becomes lower than this threshold.
16. Refer to Note 14.
17. This consumption is measured while the circuit is inhibited by the Definitive Latch.


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