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TLE42754G 英飞凌芯片 INFINEON 中文版规格书手册.pdf
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TLE42754G 英飞凌芯片 INFINEON 中文版规格书手册
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Automotive Power
Data Sheet
Rev. 1.2, 2014-07-03
TLE42754
Low Dropout Linear Fixed Voltage Regulator
TLE42754D
TLE42754G
TLE42754E
PG-TO252-5
PG-TO263-5
PG-SSOP-14 exposed pad
Type Package Marking
TLE42754D PG-TO252-5 42754D
TLE42754G PG-TO263-5 42754G
TLE42754E PG-SSOP-14 exposed pad 42754E
Data Sheet 2 Rev. 1.2, 2014-07-03
TLE42754Low Dropout Linear Fixed Voltage Regulator
1Overview
Features
• Output Voltage 5 V ± 2%
• Ouput Current up to 450 mA
• Very low Current Consumption
• Power-on and Undervoltage Reset with Programmable Delay Time
• Reset Low Down to
V
Q
= 1 V
• Very Low Dropout Voltage
• Output Current Limitation
• Reverse Polarity Protection
• Overtemperature Protection
• Suitable for Use in Automotive Electronics
• Wide Temperature Range from -40 °C up to 150 °C
• Input Voltage Range from -42 V to 45 V
• Green Product (RoHS compliant)
• AEC Qualified
Description
The TLE42754 is a monolithic integrated low-dropout voltage
regulator in a 5-pin TO-package, especially designed for automotive
applications. An input voltage up to 42 V is regulated to an output
voltage of 5.0 V. The component is able to drive loads up to
450 mA. It is short-circuit proof by the implemented current limitation
and has an integrated overtemperature shutdown. A reset signal is
generated for an output voltage
V
Q,rt
of typically 4.65 V. The power-on
reset delay time can be programmed by the external delay capacitor.
TLE42754
Overview
Data Sheet 3 Rev. 1.2, 2014-07-03
Dimensioning Information on External Components
An input capacitor
C
I
is recommended for compensation of line influences. An output capacitor C
Q
is necessary
for the stability of the control loop.
Circuit Description
The control amplifier compares a reference voltage 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
oversaturation of the power element. The component also has a number of internal circuits for protection against:
• Overload
• Overtemperature
• Reverse polarity
TLE42754
Block Diagram
Data Sheet 4 Rev. 1.2, 2014-07-03
2 Block Diagram
Figure 1 Block Diagram
Reset
Generator
Bandgap
Reference
Protection
Circuits
GND D
Q
RO
I
TLE42754
TLE42754
Pin Configuration
Data Sheet 5 Rev. 1.2, 2014-07-03
3 Pin Configuration
3.1 Pin Assignment TLE42754D (PG-TO252-5) and TLE42754G (PG-TO263-5)
Figure 2 Pin Configuration (top view)
3.2 Pin Definitions and Functions TLE42754D (PG-TO252-5) and TLE42754G (PG-
TO263-5)
Pin Symbol Function
1I Input
for compensating line influences, a capacitor to GND close to the IC terminals is
recommended
2RO Reset Output
open collector output; external pull-up resistor to a positive potential required;
leave open if the reset function is not needed
3GND TLE42754G (PG-TO263-5) only: Ground
internally connected to tab
4D Reset Delay Timing
connect a ceramic capacitor to GND for adjusting the reset delay time;
leave open if the reset function is not needed
5Q Output
block to GND with a capacitor close to the IC terminals, respecting the values given
for its capacitance
C
Q
and ESR in the table “Functional Range” on Page 8
TAB GND Ground
connect to heatsink area
AEP02580
15
ROΙ DQ
GND
GND
RO
Ι
IEP02528
D
Q
PG-TO252-5 (D-PAK) PG-TO263-5 (D²-PAK)
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