1

Pin setting

Figure 2. Connection diagram

VCC

GND

DRAIN

EA-IN

NC

DRAIN

DRAIN

DRAIN

EA-OUT

DRAIN

1

2

3

4

10

9

8

7

5

6

Table 1. Pin description

SSOP10

Name

Function

1

GND

Connected to the source of the internal power MOSFET and controller ground

reference.

2

VCC

Supply voltage of the control section. This pin provides the charging current of the

external capacitor.

3

NC

Not connected. The pin must be connected to GND pin.

4

EA-IN

Input of the error amplifier.

5

EA-OUT

Output of the error amplifier.

6-10

DRAIN

High voltage drain pin. The start-up bias current is drawn from this pin too. Connect

to a PCB copper area to facilitate the heat dissipation.

VIPER222

Pin setting

DS13192 - Rev 2

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