TLE 4266

Data Sheet

3

Rev. 2.5, 2008-03-10

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. The IC also incorporates a number of protection circuitry for:

•

Overload

•

Overtemperature

•

Reverse polarity

Figure 2

Block Diagram

4

2

Reference

Bandgap

Adjustment

Sensor

Temperature

Saturation

Control and

Protection

Circuit

Control

Amplifier

Buffer

Q

1

INH

GND

AEB01725

Ι

3