L6572

Pin connection

Doc ID 023882 Rev 1

5/22

2

Pin connection

Figure 3.

Pin connection

Table 1.

Pin description

Symbol

Pin

Description

TSD

1

Input voltage for dimmed operation detection. Connected to ground if unused.

RPH

2

Preheating current programming. A resistor placed between this pin and ground

defines the rated load current during the preheating phase.

RDO

3

Reduced light level current programming. A resistor placed between this pin and

ground defines the rated load current during the dimmed operation.

RNO

4

Nominal light level current programming. A resistor placed between this pin and

ground defines the rated load current during the normal operation.

RCL

5

Time base period programming.

GND

6

Reference voltage of the device.

SENSE

7

Current sense input. This pin has to be connected to a shunt resistor placed in

series with the load.

RDT

8

Deadtime programming. A resistor paced between this pin and ground allows the

deadtime to be programmed between LSG and HSG pulses in the range (1 µs to 5

µs).

VS

9

Supply voltage of the device. A bulk capacitor and an optional ceramic capacitor

must be connected between this pin and ground.

NC

LVG

RDO

HVG

OUT

BOOT

RPH

RCL

L6572

RNO

GND

TSD

VS

RDT

SENSE

AM14883v1