Pin description

STLD20CP1

4/19

2

Pin description

Figure 2.

Pin configuration (top view)

Table 2.

Pin description

Symbol

Pin n°

Description

SGND

1

Signal ground

DM1

2

Logic input to control current through the white LEDs, and shutdown mode

function on backlight

DM2

3

Logic input to control current through the white LEDs, and shutdown mode

function on backlight

FB_SU

4

Feedback of step-up. Control current pin on backlight

OUT_SU

5

Sensing of the step-up output voltage in order to provide protection in case of

the output voltage exceeds OVP threshold

IN

6

Supply voltage of the device

SW

7

Switch node. The internal N-channel drain is connected to this pin

PGND

8

Power ground

CN

9

Negative input for the external charge pump capacitor

CP

10

Positive input for the external charge pump capacitor

FB_CP

11

Feedback of charge pump. Control current pin on flash

OUT_CP

12

Out of the charge pump 2X, 1X

TF

13

Logic input to enable charge pump

IT

14

A resistor connected between this pin and IN sets the maximum value of

current in torch mode (SEL=0)

IF

15

A resistor connected between this pin and IN sets the maximum value of

current in flash mode (SEL=1)

SEL

16

Logic input to control flash mode. (see truth table charge pump)