This document describes the features and characteristics of the TLE 4261 semiconductor group, including very low-drop voltage, very low quiescent current, low starting-current consumption, proof against reverse polarity, input voltage up to 42V, overvoltage protection up to 65V, short-circuit proof, external setting of reset delay, integrated watchdog circuit, wide temperature range, overtemperature protection, suitable for automotive use, and EMC proofed.
The TLE 4261 is a 5‑V low‑drop voltage regulator offered in TO‑220 and DSO packages. It accepts an input voltage up to 42 V (65 V for pulses < 400 ms) and can deliver more than 500 mA at a regulated 5 V output. The device includes built‑in protection against overload, over‑voltage, over‑temperature, reverse polarity, short‑circuit and features an integrated watchdog that can monitor a microprocessor.
Pin definitions, absolute maximum ratings, electrical characteristics and package dimensions are provided. The reset delay is set externally with a capacitor on pin 5, and the regulator can be disabled via the INH pin. Detailed specifications such as output voltage tolerance, drop voltage, and quiescent current are listed for design reference.
| Input voltage range | 6 V – 40 V |
|---|---|
| Maximum input voltage | 42 V (65 V < 400 ms) |
| Output voltage (typical) | 5.00 V |
| Maximum output current | ≥ 500 mA |
| Drop voltage | 0.35 V (typical) |
| Overvoltage protection | 65 V (< 400 ms) |
| Quiescent current | max 50 µA |
The device can tolerate up to 42 V continuously and up to 65 V for pulses shorter than 400 ms.