Infineon TLS850C2TEV User Manual
User manual 1 Rev. 1.01
www.infineon.com/OPTIREG-Linear 2020-10-21
OPTIREG™ Linear TLS850C2TEVxx
Demoboard
Low Dropout Linear Voltage Regulator
About this document
Scope and purpose
This document provides information about the usage of the TLS850C2TEVxx Demoboard for the OPTIREG™
Linear TLS850C2TEVxx voltage regulator family from Infineon Technologies AG.
The TLS850C2TEVxx demoboard can be used to easily evaluate the TLS850C2TEV50 (5V voltage variant) and
TLS850C2TEV33 (3.3V voltage variant) in the PG-TO252-5 package.
Please also refer to the corresponding Data Sheets for device-specific information.
Intended audience
This document is as intended for engineers who develop applications.
OPTIREG™ Linear TLS850C2TEVxx Demoboard
Table of Contents
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 TLS850C2TEVxx Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Board Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.1 Power-on reset timing selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.2 Signal Adaption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Schematic and Layout TLS850C2TEVxx Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Schematic TLS850C2TEVxx Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Layout TLS850C2TEVxx Demoboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Bill of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
User manual 2 Rev. 1.01
2020-10-21
OPTIREG™ Linear TLS850C2TEVxx Demoboard
Introduction
1 Introduction
The TLS850C2TEVxx Demoboard is a demonstration of the Infineon low dropout linear voltage regulator
TLS850C2TEVxx family in PG-TO252-5 package.
This application note contains information for usage of the TLS850C2TEVxx Demoboard.
Table 1 provides an overview of the family members of TLS850C2TEVxx voltage regulators.
Table 1 Family Overview
Type Output voltage Output current Enable Reset Package
TLS850C2TEV50 5.0 V 500 mA No Yes PG-TO252-5
TLS850C2TEV33 3.3 V 500 mA No Yes PG-TO252-5
1.1 General Description
The OPTIREG™ Linear TLS850C2TEVxx is a low dropout linear voltage regulator for load current up to 500 mA.
An input voltage of up to 40 V is regulated to V
With an input voltage range of 3 V to 40 V and very low quiescent current of only 20 µA, this regulator is
perfectly suitable for automotive or other supply systems permanently connected to the battery.
The new loop concept combines fast regulation and very high stability while requiring only one small ceramic
capacitor of 1 µF at the output. At output currents below 100 mA the device has a very low dropout voltage of
only 100 mV. The operating range starts at an input voltage of only 3 V (extended operating range). This makes
the TLS850C2TEVxx suitable for automotive systems that need to operate during cranking condition.
The output voltage is supervised by the reset feature, including undervoltage reset and delayed reset at
power-on.
Internal protection features such as output current limitation and overtemperature shutdown, protect the
device from immediate damage caused by failures such as output shorted to GND, overcurrent or
overtemperature conditions.
Q,nom
=5V or V
= 3.3 V with ±2 % precision.
Q,nom
User manual 3 Rev. 1.01
2020-10-21
OPTIREG™ Linear TLS850C2TEVxx Demoboard
Introduction
1.2 TLS850C2TEVxx Feature List
• Wide Input Voltage Range from 3.0 V to 40 V
• Output Voltage 5 V or 3.3 V
• Output Voltage Precision ±2 %
• Output Current up to 500 mA
• Low Current Consumption of 20 µA
• Very Low Dropout Voltage of typ. 100 mV at 100 mA Current
• Stable with Small Output Capacitor of 1 µF
• Overtemperature Shutdown
• Output Current Limit Protection
• Reset
• Delayed reset at power-on.
• Wide Temperature Range from -40 °C up to 150 °C
• Available in PG-TO252-5 Package
• Green Product (RoHS compliant)
• AEC Qualified
These features make the TLS850C2TEVxx voltage regulators perfectly suitable as automotive supplies that are
connected to the battery permanently and that need to operate in cranking condition.
User manual 4 Rev. 1.01
2020-10-21
Bandgap
Reference
GND
Q
I
Temperature
Shutdown
Reset
RO
D
Current
Limitation
OPTIREG™ Linear TLS850C2TEVxx Demoboard
Introduction
1.3 Block Diagram
Figure 1 shows the block diagram of TLS850C2TEVxx.
Figure 1 Block Diagram of TLS850C2TEVxx.
User manual 5 Rev. 1.01
2020-10-21
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