Datasheet

2

Rev.1.1

2023-10-16

OPTIREG™ linear TLS820F3ELV33

Low dropout linear voltage regulator with watchdog and reset

Description

The OPTIREG™ linear TLS820F3ELV33 is a high performance low drop out fixed output voltage regulator in a

PG-SSOP-14 package. With an input voltage range of 3 V to 42 V and very low quiescent current of only 26 µA,

these regulators are perfectly suitable for automotive systems or other supply systems connected to the

battery permanently. The TLS820F3ELV33 provides an output voltage accuracy of ±2% and a maximum output

current of 200 mA.

The loop concept combines fast regulation and very good stability while requiring only one small ceramic

capacitor of 1 µF at the output. The operating range starts already at an input voltage of only 3 V (extended

operating range). This makes the TLS820F3ELV33 also suitable to supply automotive systems that need to

operate during cranking condition.

The device can be switched on and off via Enable.

The Reset supervises the output voltage, including undervoltage reset, delay reset at power-on and an

adjustable lower reset threshold.

An integrated Watchdog circuit with adjustable timing monitors the microcontroller’s operation. A shared

external delay capacitor sets both reset timing and watchdog timing.

Internal protection features such as output current limitation and overtemperature shutdown are

implemented to protect the device against immediate damage due to failures such as output short circuit to

GND, overcurrent and overtemperature.

Type

Package

Marking

TLS820F3ELV33

PG-SSOP-14

820F3V33