TLE4264G: High-Performance 5V Linear Voltage Regulator by Infineon Technologies

The TLE4264G from Infineon Technologies is a premium-grade linear voltage regulator designed to deliver exceptional performance in the most demanding automotive and industrial applications. This comprehensive guide explores its features, specifications, and why it remains a top choice for engineers worldwide.

In-Depth Product Analysis

Technical Specifications

The TLE4264G offers:

• Fixed 5V output with 2% accuracy
• Wide 5.5V to 45V input range for versatile applications
• 120mA continuous output current with peak capability
• Ultra-low 400 A quiescent current for power-sensitive designs
• Excellent 54dB PSRR at 100Hz for clean power delivery

Advanced Protection Features

Engineered for reliability, the TLE4264G includes:

• Thermal shutdown protection (150 C threshold)
• Short-circuit and overload protection
• Reverse polarity protection (-45V withstand capability)
• Overvoltage protection up to 60V

Performance Characteristics

Thermal Management

The regulator's PG-SOT223-4 package features:

• Low thermal resistance (62K/W junction-to-ambient)
• Optimized copper pad layout recommendations
• Stable operation from -40 C to +150 C junction temperature

Electrical Performance

Key electrical parameters include:

• Low dropout voltage: 500mV typical at 100mA load
• Line regulation: 6mV typical (5.5V V_IN 40V)
• Load regulation: 10mV typical (I_OUT = 1mA to 120mA)
• Output noise voltage: 40 V_RMS (10Hz to 100kHz)

Application Solutions

Automotive Applications

Ideal for:

• ECU power supplies
• Sensor interfaces
• Infotainment systems
• Body control modules

Industrial Implementations

Perfect for:

• PLC I/O modules
• Field instrumentation
• Motor control circuits
• HMI interfaces

Design Considerations

PCB Layout Guidelines

For optimal performance:

• Use a minimum 1cm² copper area for heat dissipation
• Place input capacitor within 5mm of the IC
• Keep output traces short and wide
• Separate analog and power grounds

Component Selection

Recommended external components:

• Input capacitor: 100nF ceramic + 1 F tantalum
• Output capacitor: 220nF ceramic (required for stability)
• Protection diodes for harsh environments

Comparative Advantages

The TLE4264G outperforms competitors with:

• Higher input voltage tolerance than similar regulators
• Lower quiescent current than automotive-grade alternatives
• More robust protection features compared to industrial regulators
• Smaller footprint than equivalent power devices

Frequently Asked Questions

Q: Can the TLE4264G handle load dumps?

A: Yes, it's designed to withstand 45V continuous input with transient capability up to 60V for 400ms.

Q: Is external heatsinking required?

A: For currents below 80mA in ambient temperatures under 85 C, the package provides sufficient thermal performance.

Q: What's the typical lifespan?

A: When operated within specifications, the MTBF exceeds 1 million hours.

Purchase Information

While discontinued at major distributors, we maintain stock of genuine Infineon TLE4264G regulators. Available in tape-and-reel packaging for production needs or small quantities for prototyping.

For volume pricing or technical support, contact our engineering team for personalized assistance with your power design challenges.