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Infineon Technologies OPTIREG™ Linear TLE4263-2Gx Voltage Regulators

Infineon Technologies OPTIREG™ Linear TLE4263-2Gx Voltage Regulators are monolithic integrated very low dropout voltage regulators in an SMD PG-DSO-8 or PG-DSO-14 package, specially designed for automotive applications. An input voltage up to 45V is regulated to an output voltage of 5.0V. The Infineon OPTIREG™ Linear TLE4263-2Gx Voltage Regulators drive loads up to 180mA. These ICs are short-circuit-proof due to the implemented current limitation and have an integrated overtemperature shutdown. These regulators feature power-on and undervoltage reset with an adjustable reset threshold, a watchdog circuit for monitoring a connected microcontroller, and an inhibit input for enabling or disabling the component.

The reset output is set to “low” in case the output voltage falls below the reset switching threshold. This threshold can be decreased to 3.5V by an external resistor divider. The power-on reset delay time can be programmed by the external delay capacitor. A watchdog circuit provides a monitoring function for microcontrollers; when at missing pulses on the watchdog’s input, the reset output is set to “low”. The trigger time for the watchdog pulses can be set by the external capacitor. The IC can be switched off by the inhibit input, reducing the current consumption to 0mA typically.

Features

  • ≤±2% output voltage tolerance 
  • 180mA output current capability
  • Low-drop voltage
  • Very low standby current consumption
  • Overtemperature protection
  • Reverse polarity protection
  • Short-circuit proof
  • Adjustable reset threshold
  • Watchdog for monitoring the microprocessor
  • Power-on and undervoltage reset with programmable delay time
  • Reset low down to VQ = 1V
  • PG-DSO-8 or PG-DSO-14 package options
  • Wide -40°C to +150°C temperature range
  • AEC-Q100 qualified, suitable for use in automotive electronics
  • Lead-free, Halogen-free, RoHS-compliant, Green product

Applications

  • General automotive applications
  • Supply for microcontroller

Specifications

  • 5.5V to 45V functional input voltage range
  • 4.90V to 5.10V output voltage range
  • 180mA to 400mA output current limitation range
  • 0.50V maximum dropout voltage, 0.35V typical
  • 25mV maximum line/load regulation
  • 54dB typical power supply rippler rejection
  • ESD susceptibility
    • 2kV Human Body Model (HBM)
    • 1kV Charged-Device Model (CDM)
  • Typical thermal resistance
    • 26K/W junction-to-case
    • 53K/W junction-to-ambient
    • 109K/W junction-to-ambient, footprint only
    • 77K/W junction-to-ambient, 300mm2 heatsink area
    • 68K/W junction-to-ambient, 600mm2 heatsink area

Datasheets

  • OPTIREG Linear TLE4263-2GM 5V low drop voltage regulator with watchdog and reset
  • OPTIREG Linear TLE4263-2GS 5V low drop voltage regulator with watchdog and reset

Block Diagram

Block Diagram - Infineon Technologies OPTIREG™ Linear TLE4263-2Gx Voltage Regulators

Application Circuit

Application Circuit Diagram - Infineon Technologies OPTIREG™ Linear TLE4263-2Gx Voltage Regulators

Resources

Published: 2025-03-28 | Updated: 2025-04-10