DS12548 Rev 3

5/20

L5050S

Block diagram and pins description

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1

Block diagram and pins description

Figure 1. Functional block diagram – L5050S

Figure 2. Pins configuration

Table 2. Pins description

Pin

name

L5050S

Pin number

Function

N.C.

1

—

GND

2

Ground reference for regulator.

3

5 V regulated output. Block to GND with a ceramic capacitor (≥ 220 nF for

regulator stability).

N.C.

4

—

N.C.

5

—

6

Supply voltage, block directly to GND on the IC with a capacitor.

En

7

Enable pin: high signal to switch the regulator on.

N.C.

8

—

THE RMA L

S HUTDOWN

CURRE NT

LIMITE R

V OLTAGE

RE FE RE NCE

POWE R

DRIVER

START - UP

Vs

En

Vo

GND

+

-

2.5 V