L6933H1.2

Pin settings

3/12

1

Pin settings

1.1

Pin connection

Figure 2.

Pin connection (top view)

1.2

Pin description

Table 2. Pin description

Pin N°

Name

Description

SS/INH

1

The soft-start time is programmed connecting an external capacitor from this

pin and GND. The internal current generator forces a current of 5

µA through

the capacitor. In steady state regulation, the voltage at this pin will be about 8 V.

This pin is also used to inhibit the device: when the voltage at this pin is lower

than the 0.5 V, the device is disabled.

VIN

2

Supply voltage. This pin is connected to the drain of the internal N-mos.

Connect this pin to a capacitor larger than 10 µF.

ADJ

3

Connecting this pin to a voltage divider it is possible to program the output

voltage between 1.2 V and 5 V.

VOUT

4

Regulated output voltage. This pin is connected to the source of the internal N-

mos. Connect this pin to a capacitor of 10 µF.

PGOOD

5

Power good output. The pin is open drain and detects the output voltage. It is

forced low if the output voltage is lower than 90 % the programmed voltage.

NC

7, 8

Not connected

GND

6

Ground pins internally connected