TLE4299G

Product Overview

The Infineon Technologies TLE4299G is a fixed positive-output linear voltage regulator intended for 3.3 V rail generation. It provides up to 150 mA from a single regulator channel and accepts input voltages up to 45 V. The device is offered in a surface-mount 8-SOIC package with package designation PG-DSO-8-1. Its automotive grade and AEC-Q100 qualification support vehicle electronics contexts, while the -40°C to 150°C junction temperature range defines the operating envelope.

Key Features

• Fixed 3.3 V positive output with a 150 mA output current rating.
• Input voltage maximum of 45 V and dropout of 0.5 V at 100 mA.
• 105 µA quiescent current and 66 dB PSRR at 100 Hz.
• Reset control feature with over current, over temperature, reverse polarity, and short-circuit protection.
• Surface-mount 8-SOIC package, 3.90 mm width, automotive grade, AEC-Q100 qualified, and -40°C to 150°C junction temperature range.

Applications

• 3.3 V power rail for automotive electronic control units and vehicle-mounted sensors.
• Regulated supply for microcontroller and logic interfaces requiring a fixed output.
• Power management for boards operating from higher-voltage input rails.
• Embedded systems needing reset control and protection against current, temperature, reverse polarity, or short-circuit faults.

Design & Procurement Notes

Designers should verify that the input-to-output voltage difference satisfies the 0.5 V dropout at 100 mA while keeping input voltage at or below 45 V. The 150 mA output limit and 105 µA quiescent current are relevant for low-power 3.3 V loads. The 66 dB PSRR at 100 Hz may be considered where supply noise rejection is important. The reset control feature and protection functions should be integrated into system monitoring and fault handling. Layout should account for the surface-mount 8-SOIC package and the -40°C to 150°C junction temperature operating range.