TECHNICAL DATA

January, 2011, Rev. 01

5-V Low-Drop Fixed-Voltage Regulator

ILE 4264 G is a 5-V low-drop fixed-voltage regulator

in an SOT-223 package. The IC regulates an input

voltage

in

the

range

5.5V<

to

than 120 mA. This IC is shortcircuit-proof and features

temperature protection that disables the circuit at

overtemperature.

Features:

• Output voltage tolerance

≤ ± 2 %

• Low-drop voltage

• Very low current consumption

• Overtemperature protection

• Short-circuit proof

• Suitable for use in automotive electronics

Dimensioning Information on External Components

The input capacitor

of approx. 1

can be clamped. The output capacitor

circuit. Stability is guaranteed at values

≥ 10µF and an ESR ≤ 10Ω within the

operating temperature range.

Pin Definitions and Functions

Pin

Symbol

Function

1

Input voltage; block to

ground directly on IC with

ceramic capacitor

2, 4

GND

Ground

3

5-V output voltage; block

to ground with

≥ 10-µF Ω

capacitor, ESR < 10

Ω

Circuit Description

The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to

a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer.

Saturation control, working as a function of load current, prevents any over-saturation of the power element.

The IC is additionally protected against overload, overtemperature and reverse polarity.

ILE4264G

P-SOT223-4-1

I L E 4264G