TLF42772LDXUMA1 Infineon

TLF4277-2LD 1 Overview Features Integrated Current Monitor Overvoltage, Overtemperature and Overcurrent Detection Adjustable Output Voltage Output Current up to 300 mA Adjustable Output Current Limitation Stable with Ceramic Output Capacitor of 1 F Wide Input Voltage Range up to 40 V Reverse Polarity Protection Short Circuit Protected Overtemperature Shutdown Automotive Temperature Range -40 C T 150 C j Green Product (RoHS and WEEE compliant) AEC Qualified Applications The TLF4277-2LD is the ideal companion IC to supply active antennas for car infotainment and telematics applications. The adjustable current limitation, output voltage and disgnostic features makes the TLF4277- 2LD capable of supplying the majority of standard active antennas such as: GPS, GNSS, FM/AM, DAB, XM, SIRIUS Description The TLF4277-2LD is a monolithic integrated low drop out voltage regulator capable of supplying loads up to 300 mA. For an input voltage up to 40 V the TLF4277-2LD provides an adjustable output voltage in a range from 5 V up to 12 V. The integrated current monitor function is a unique feature that provides diagnosis and system protection functionality. Fault conditions such as overtemperature and output overvoltage are monitored and indicated at the current sense output. The maximum output current limit of the device is adjustable to provide additional protection to the connected load. Via the enable function the IC can be disabled to lower the power consumption. Type Package Marking TLF4277-2LD PG-TSON-10 4277-2 Data Sheet 1 Rev. 1.01 www.infineon.com/power 2016-09-01 TLF4277-2LD Table of Contents 1 Overview 1 Table of Contents . 2 2 Block Diagram . 3 3 Pin Configuration . 4 3.1 Pin Assignment . 4 3.2 Pin Definitions and Functions 4 4 General Product Characteristics 6 4.1 Absolute Maximum Ratings 6 4.2 Functional Range . 7 4.3 Thermal Resistance . 8 5 Voltage Regulator 9 5.1 Description Voltage Regulator . 9 5.2 Electrical Characteristics Voltage Regulator 10 5.3 Application Information for setting the variable output voltage 12 5.4 Typical Performance Characteristics Voltage Regulator . 13 6 Current Consumption 14 6.1 Electrical Characteristics Current Consumption 14 6.2 Typical Performance Graphs Current Consumption . 15 7 Current and Protection Monitor Functions 16 7.1 Functional Description Current and Protection Monitors 16 7.1.1 Linear Current Monitor . 17 7.1.2 Adjustable Output Current Limitation 18 7.1.3 Overvoltage Detection 18 7.1.4 Thermal Shutdown Detection . 18 7.1.5 Status Output Signal . 18 7.1.6 Typical Performance Graphs Current Monitor . 20 8 Enable Function . 21 8.1 Description Enable Function . 21 8.2 Electrical Characteristics Enable Function 21 9 Application Information 22 9.1 Application Diagram . 22 9.2 Selection of External Components 22 9.2.1 Input Pin 22 9.2.2 Output Pin 23 9.3 Thermal Considerations 23 9.4 Reverse Polarity Protection . 24 9.5 Further Application Information 24 10 Package Outlines 25 11 Revision History . 26 Data Sheet 2 Rev. 1.01 2016-09-01