TLE4262 Infineon Technologies Corporation, TLE4262 Datasheet - Page 4

• Manufacturer Part Number: TLE4262
• Description: 5 Volt Standard Regulator
• Manufacturer: Infineon Technologies Corporation

Circuit Description
The control amplifier compares a reference voltage, which is kept highly accurate 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 as a function of the load
current prevents any over-saturation of the power element. If the externally scaled down
output voltage at the reset threshold input drops below 1.35 V, the external reset delay
capacitor is discharged by the reset generator. If the voltage on the capacitor reaches
the lower threshold
again until the upper threshold
to GND, reset is triggered at an output voltage of 4.5 V. The IC can be switched at the
TTL-compatible, low-active inhibit input. It also includes a number of internal circuits for
protection against:
•
•
•
Figure 2
Data Sheet
Overload
Overtemperature
Reverse polarity
I
13
Adjustment
Block Diagram
V
Temperature
Reference
DRL
Bandgap
Sensor
, a reset signal is issued on the reset output and not cancelled
V
DU
Control
Amplifier
is exceeded. If the reset threshold input is connected
4
Buffer
INH
14
Control and
Saturation
Protection
Circuit
GND
3-5, 10-12
Generator
Reset
Rev. 2.7, 2007-03-20
AEB01081
9
6
7
1
TLE 4262
Q
D
RO
RADJ