TLE42364G datasheet(2/13 Pages) INFINEON

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PG-SOT223-4

Type

Package

Marking

TLE42364G

PG-SOT223-4

42364

Data Sheet

Rev. 1.0, 2010-02-08

Low Dropout Linear Voltage Regulator

TLE42364G

1Overview

Features

•

Output voltage 5 V

•

Output voltage tolerance

≤ ±2%

•

100 mA current capability

•

Very low current consumption

•

Low dropout voltage

•

Overtemperature shutdown

•

Reverse polarity protection

•

Output current limitation

•

Wide temperature range

•

Suitable for use in automotive electronics

•

Enable

•

Green Product (RoHS compliant)

•

AEC Qualified

Functional Description

TLE42364G is a low dropout voltage regulator for 5 V supply in a PG-SOT223-4 SMD package. The IC regulates

an input voltage VI in the range of 5.5 V < VI < 45 V to VQ,nom = 5 V. The maximum output current is more than 100

mA. The IC can be switched off via the enable input, which causes the current consumption to drop below 10

µA.

The IC is protected against shortcircuit and overheat by the incorporated output current limitation and the

overtemperature shutdown.

Choosing External Components

The input capacitor CI is necessary for compensating line influences. The output capacitor CQ is necessary for the

stability of the regulating circuit. Stability is guaranteed at values CQ ≥ 10 µF and an ESR ≤ 10 Ω within the whole

operating temperature range.

Circuit Description

The device includes a precise reference voltage, which is very accurate due to resistor adjustment. A control amplifier

compares the divided output voltage to this reference voltage and drives the base of the PNP series transistor through a buffer.

Saturation control as a function of the load current prevents any oversaturation of the power element.

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