DocID028766 Rev 1

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STCH02

Device description and block diagram

24

Figure 3. Pin connection (top view)

Table 2. Thermal data

Symbol

Parameter

Max. value

Unit

Thermal resistance, junction to ambient

150

°C

Table 3. Absolute maximum ratings

Symbol

Pin

Parameter

Value

Unit

1

Voltage range (referred to GND)

-0.3 to 650

V

1

Output current

Self limited

mA

3 to 6

Analog inputs and outputs

-0.3 to 3.6

V

4

Zero current detector current

± 3

mA

7

Output totem pole peak current

Self limited

8

Self limited

V

8

Device supply current + internal Zener capability

25

mA

Junction temperature range

-40 to 150

°C

Storage temperature

-55 to 150

°C

Table 4. Pin functions

No.

Name

Function

1HV

High voltage start-up. The pin, able to withstand 650 V, is to be tied directly to the

(50 V typ.) a 7 mA internal current source charges the capacitor connected between

voltage falls below the turn-off threshold (10 V typ.). In this way, if the auxiliary

winding is not delivering sufficient voltage or it is not used at all, the IC keeps on

running. This feature is disabled in case a protection is tripped, and the generator is

2NC

Not internally connected. A provision for clearance on the PCB to meet safety

requirements.