TECHNICAL DATA

June, 2013, Rev. 02

5-V Low-Drop Fixed Voltage Regulator

Features

• Output voltage tolerance ≤ ± 2%, 4%

• Very low current consumption

• Separated reset and watchdog output

• Low-drop voltage

• Watchdog

• Adjustable watchdog activating threshold

• Adjustable reset threshold

• Overtemperature protection

• Reverse polarity protection

• Short-circuit proof

• Suitable for use in automotive electronics

• Wide temperature range

• AEC-Q100 Qualified

• ESD Protection : HBM ±8,000V / MM ±400V / CDM ±2,000V

Functional Description

The ILE 4278 is a monolithic integrated low-drop fixed-voltage regulator which can

supply loads up to 200 mA. The device is available in the 14-SOP-225 package. It is

designed to supply microprocessor systems under the severe conditions of automotive

applications and therefore equipped with additional protection functions against over

load, short circuit and over temperature. Of course the ILE 4278 can also be used in

other applications where a stabilized voltage is required.

An input voltage

accuracy of ± 2%.

An input voltage

accuracy of ± 4%.

The device operates in the wide temperature range of

Two additional features are implemented in the ILE 4278 a load dependent watchdog

function as well as a sophisticated reset function including power on reset, under

voltage reset, adjustable reset delay time and adjustable reset switching threshold.

The watchdog function monitors the microcontroller, including time base failures. In

case of a missing rising edge within a certain pulse repetition time the watchdog output

is set to LOW. Programming of the max. repetition time can be done easily by an

external reset delay capacitor. To prevent a reset in case of missing pulses, the

watchdog output WO is separate from the reset output RO for the ILE 4278.

ILE4278

PDSO-14

ORDERING INFORMATION

ILE4278D