MC44605_06 datasheet(6/20 Pages) ONSEMI | High Safety, Latched Mode, GreenLine TM PWM Controller for (Multi) Synchronized Applications

6 page

MC44605

http://onsemi.com

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

−

Ratio (EHTOVP and WSCD Disabling Capacitor Charge Current)Iref

IDis−H/Iref

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

TOTAL DEVICE

Power Supply Current

ICC

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)

−

Disabling Mode (VCC = 6.0 V) (Note 17)

−

0.55

Power Supply Zener Voltage (ICC = 35 mA)

18.5

−

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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