Automotive Low Dropout (LDO) Voltage Tracking Regulator OPTIREG™ TLS125D0EJ application circuit

Open online SPICE simulator circuit link: atv_LDO_TLS125D0EJ_application_circuit.tsc

Automotive Low Dropout Voltage Tracking Regulator TLS125D0EJ
Application Circuit

The OPTIREG™ linear voltage regulator TLS125D0EJ is a monolithic, integrated low-dropout
voltage tracking regulator with high accuracy in a small PG-DSO-8 exposed pad package.
The TLS125D0EJ is designed to supply off-board systems, for example sensors in powertrain
management systems under the severe conditions of automotive applications. The TLS125D0EJ
provides protection functions against reverse polarity as well as against short circuit to GND and
to battery. The output voltage follows the reference voltage that is applied to the ADJ input with
very high accuracy, up to a supply voltage of 40 V and up to an output current of 250 mA. The
required minimum reference voltage at ADJ is 2.0 V

Thermal model description:
THERMAL_MODEL = 1: PG-DSO-8 1s0p 600mm2 cooling area
THERMAL_MODEL = 2: PG-DSO-8 1s0p 300mm2 cooling area
THERMAL_MODEL = 3: PG-DSO-8 1s0p, footprint
THERMAL_MODEL = 4: PG-DSO-8 2s2p
THERMAL_MODEL = 10: No self-heating, only TEMP value used as a temperature

Model performance :
- dynamic behavior (start-up, PSRR)
- static behavior is modelled by approximation to the real behavior of the device
over temperature
- the thermal simulations represent an approximation of the actual thermal
behavior of the device according to the JEDEC standards at Power = 3W
and Ambient Temperature = 85 °C