L5050SDTR datasheet(3/25 Pages) STMICROELECTRONICS

部件名	L5050SDTR

功能描述	Single and dual isolated 5 V low drop linear voltage regulators for automotive application

PDF	25 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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3 / 25 page

Figure 2. Functional block diagram - L5050SD

THERMAL

SHUTDOWN

CURRENT

LIMITER

VOLTAGE

REFERENCE

POWER

DRIVER

START -UP

VS2

EN2

VO2

GND2

2.5 V

THERMAL

SHUTDOWN

CURRENT

LIMITER

VOLTAGE

REFERENCE

POWER

DRIVER

START -UP

VS1

EN1

VO1

GND1

2.5 V

Table 2. L5050SD pins description

Pin name

Pin number

Function

GND1

Ground reference for regulator 1

Vo1

5 V regulated output 1. Block to GND1 with a ceramic capacitor

(≥ 220 nF for regulator stability)

GND2

Ground reference for regulator 2

Vo2

5 V regulated output 2. Block to GND2 with a ceramic capacitor

(≥ 220 nF for regulator stability)

VS2

Supply voltage 2, block directly to GND2 on the IC with a capacitor

En2

Enable pin for regulator 2:

•

high signal to switch the regulator on

VS1

Supply voltage 1, block directly to GND1 on the IC with a capacitor.

En1

Enable pin for regulator 1:

•

high signal to switch the regulator on

L5050

Block diagram and pins description

DS13704 - Rev 3

page 3/25

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