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Automotive Low Dropout (LDO), Low Noise Post Voltage Regulator OPTIREG™ TLS203B0EJ V33 application circuit for 3.3V output voltage

Open online SPICE simulator circuit link: atv_LDO_TLS203B0EJV33_application_circuit.TSC

Automotive Low Dropout, Low Noise Post Voltage Regulator TLS203B0EJ V33
Application Circuit

The TLS203B0EJ V33 is a micropower, low noise, low dropout voltage regulator. The device is capable of supplying an
output current of 300 mA with a dropout voltage of 270 mV. Designed for use in battery-powered systems, the low
quiescent current of 30 µA makes it an ideal choice.

A key feature of the TLS203B0EJ V33 is its low output noise. By adding an external 10 nF bypass capacitor output noise
values down to 24 µVRMS over a 10 Hz to 100 kHz bandwidth can be reached. The TLS203B0EJ V33 voltage regulator
is stable with output capacitors as small as 3.3 µF. Small ceramic capacitors can be used without the series
resistance required by many other linear voltage regulators.

Internal protection circuitry includes reverse battery protection, current limiting and reverse current protection. The
TLS203B0EJ V33 comes as fixed output voltage variant 3.3 V as well as adjustable device with a 1.22 V reference

Thermal model description:
THERMAL_MODEL = 1: DS08 1s0p 600mm2 cooling area
THERMAL_MODEL = 2: DS08 1s0p, footprint
THERMAL_MODEL = 3: DS08 2s2p
THERMAL_MODEL = 10: No self-heating, only TEMP value used as a temperature

Technical Assistance
Voltage Regulator

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Product info: TLS203B0EJ V33