ILE4264G_11 参数 Datasheet PDF下载

TECHNICAL DATA

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

V

I

in the range 5.5V<

V

I

<45V to

V

Qrated

= 5.0V. The maximum output current is more

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

temperature protection that disables the circuit at

overtemperature.

Features:

•

•

•

•

•

•

•

ILE4264G

P-SOT223-4-1

I L E 4264G

Output voltage tolerance

≤ ±

2 %

Low-drop voltage

Very low current consumption

Overtemperature protection

Short-circuit proof

Suitable for use in automotive electronics

Reverse polarity.

Dimensioning Information on External Components

The input capacitor

C

i

is necessary for compensating line influences. Using a resistor

of approx. 1

Ω

in series with

C

i

, the oscillating of input inductivity and input capacitance

can be clamped. The output capacitor

C

Q

is necessary for the stability of the regulating

circuit. Stability is guaranteed at values

C

Q

≥

10µF and an ESR

≤

10Ω within the

operating temperature range.

Pin Definitions and Functions

Pin

1

Symbol

Function

Input voltage;

block to

ground directly on IC with

ceramic capacitor

Ground

5-V output voltage;

block

to ground with

≥ 10-µF Ω

capacitor, ESR < 10

Ω

V

I

GND

2, 4

3

V

Q

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.

January, 2011, Rev. 01