TLE42344G Datasheet | Infineon

Features - - - - - - - - - - Overview Output voltage tolerance ≤ ±2% Low dropout voltage Output current up to 100 m A Very low current consumption Overtemperature shutdown Output current limitation Suitable for use in automotive electronics Reverse polarity protection Green Product (Ro HS pliant) AEC Qualified PG-SOT223-4 Functional Description TLE42344G is a 5 V low dropout fixed voltage regulator in an PG-SOT223-4 package. The IC regulates an input voltage VI in the range 5.5 V < VI < 45 V to VQrated = 5.0 V. The maximum output current is more than 100 m A. This IC is protected against shortcircuit and overheat by the integrated output current limitation and the overtemperature shutdown Dimensioning Information on External ponents The input capacitor Ci is necessary for pensating line influences. The output capacitor CQ is necessary for the stability of the regulating circuit. Stability is guaranteed at values CQ ≥ 10 µF and an ESR ≤ 10 Ω within the operating temperature range. Circuit Description The control amplifier pares a reference voltage, which is kept highly precise by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control, working as a function of load current, prevents any over-saturation of the power element. Type TLE42344G Data Sheet Package PG-SOT223-4 2 Marking 42344 Rev. 1.0, 2010-02-08 Block Diagram Block Diagram Temperature Sensor Saturation Control and Protection Circuit 3 Control Amplifier Input Output Buffer Adjustment Bandgap Reference 2,4 GND AEB01527 Figure 1 Block Diagram Data Sheet Rev. 1.0, 2010-02-08 Pin Configuration Pin Configuration Pin...