LNBH24L datasheet(9/25 Pages) STMICROELECTRONICS

9 / 25 page

LNBH24L

Pin configuration

Doc ID 16857 Rev 2

9/25

Pin n°

(sec. A/B)

Symbol

Name

Pin function

13 /

EXTM-A /

EXTM-B

External

Modulation

External modulation inputs act on VoRX linear regulator

outputs to superimpose an external 22 kHz signal. Need DC

decoupling to the AC source. If not used they can be left

floating.

4 /

P-GND-A /

P-GND-B

Power Grounds

DC-DC converters power grounds.

Epad

Exposed Pad

To be connected with power grounds and to the ground layer

through vias to dissipate the heat.

A-GND

Analog Grounds

Analog circuits grounds.

BYP

By-pass Capacitor

Needed for internal pre-regulator filtering. The BYP pin is

intended only to connect an external ceramic capacitor. Any

connection of this pin to external current or voltage sources

may cause permanent damage to the device.

8 /

ADDR-A /

ADDR-B

Address Setting

Two I²C addresses available for each section by setting the

Address pins voltage level. See address pin characteristics

table.

15/

ISEL-A /

ISEL-B

Current selection

The resistors “RSEL” connected between ISEL and GND define

the linear regulators current limit protection threshold by the

equation: Imax(typ) = 10000 / RSEL.

14 /

Reserved

To be left floating. Do Not connect to GND.

Table 2.

Pin description (continued)

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