TLF80511TF
Low Dropout Linear Fixed Voltage Regulator
TLF80511TFV50
TLF80511TFV33
Data Sheet
Rev. 1.0, 2014-01-28
Automotive Power
TLF80511TF
Table of Contents
1
2
3
3.1
3.2
4
4.1
4.2
4.3
5
5.1
5.2
5.3
5.4
6
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.5
7
8
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment PG-TO252-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions PG-TO252-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Product Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
6
7
7
Block Description and Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Voltage Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Performance Characteristics Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Performance Characteristics Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Application Information
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selection of External Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
15
15
15
15
16
17
17
Package Outlines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Data Sheet
2
Rev. 1.0, 2014-01-28
Low Dropout Linear Fixed Voltage Regulator
TLF80511TF
1
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Overview
Output Voltage 5 V and 3.3 V
Output Voltage Precision ±2 %
Output Current up to 400 mA
Ultra Low Current Consumption 38 µA
Very Low Dropout Voltage: 100 mV at 100 mA Output Current
Extended Operating Range Starting at 3.3 V
Small Output Capacitor 1 µF
Output Current Limitation
Overtemperature Shutdown
Suitable for Use in Automotive Electronics
Wide Temperature Range from -40 °C up to 150 °C
Green Product (RoHS compliant)
AEC Qualified
PG-TO252-3
Description
The TLF80511TF is a linear low dropout voltage regulator for load currents up to 400 mA. An input voltage of up
to 40 V is regulated to
V
Q,nom
= 5 V (TLF80511TFV50) or
V
Q,nom
= 3.3 V (TLF80511TFV33) with ±2 % precision.
The TLF80511TF with a typical quiescent current of 38 µA, is the ideal solution for systems requiring very low
operating currents, such as those permanently connected to a battery.
It features a very low dropout voltage of 100 mV, when the output current is less than 100 mA. In addition, the
dropout region begins at input voltages of 3.3 V (extended operating range). This makes the TLF80511TF suitable
to supply automotive systems.
In addition, the TLF80511’s new fast regulation concept requires only a single, 1 µF output capacitor to maintain
stable regulation.
The device is designed for the harsh environment of automotive applications. Therefore standard features like
output current limitation and overtemperature shutdown are implemented and protect the device against failures
like output short circuit to GND, over-current and over-temperatures. The TLF80511TF can be also used in all
other applications requiring a stabilized 5 V or 3.3 V supply voltage.
Type
TLF80511TFV50
TLF80511TFV33
Data Sheet
Package
PG-TO252-3
PG-TO252-3
3
Marking
80511V5
80511V3
Rev. 1.0, 2014-01-28
TLF80511TF
Block Diagram
2
Block Diagram
I
Q
Current
Limitation
Bandgap
Reference
Temperature
Shutdown
GND
Figure 1
Block Diagram
Data Sheet
4
Rev. 1.0, 2014-01-28
TLF80511TF
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment PG-TO252-3
GND
1
I
2
GND
3
Q
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions PG-TO252-3
Pin
1
Symbol
I
Function
Input
for compensating line influences, a capacitor to GND close to the IC terminals is
recommended
Ground
Output
block to GND with a capacitor close to the IC terminals, respecting the values given
for its capacitance CQ and ESR in the table
“Functional Range” on Page 7
Heat Slug
connect to heatsink area;
connect with GND on PCB
2
3
GND
Q
Tab
GND
Data Sheet
5
Rev. 1.0, 2014-01-28
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