Functional Description TLE 4267 is a 5-V low-drop voltage regulator in a TO220-7 package. It supplies an output current of > 400 mA. The IC is shortcircuit-proof and incorporates temperature protection that disables the IC at overtemperature.
Features ● Output voltage tolerance ≤ ± 2 % ● Low-drop voltage ● Very low standby current consumption ● Input voltage up to 40 V ● Overvoltage protection up to 60 V (≤ 400 ms) ● Reset function down to 1 V output voltage ● ESD protection up to 2000 V ● Adjustable reset time ● On/off logic ● Overtemperature protection ● Reverse polarity protection ● Short-circuit proof ● Wide temperature range ● Suitable for use in automotive electronics
Application The IC regulates an input voltage VI in the range 5.5 V < VI < 40 V to VQrated = 5.0 V. A reset signal is generated for an output voltage VQ of < 4.5 V. The reset delay can be set with an external capacitor. The device has two logic inputs. It is turned-ON by a voltage of > 4 V on E2 by the ignition for example. It remains active as a function of the voltage on E6, even if the voltage on E2 goes Low. This makes it possible to implement a self holding circuit without external components. When the device is turned-OFF, the output voltage drops to 0 V and current consumption tends towards 0 µA.