12V Automotive High Accuracy LDO Voltage Tracking Regulator TLE4254EJA Application Circuit

Open online SPICE simulator circuit link: atv_LDO_TLE4254EJA_application_circuit_V1.TSC


12V Automotive High Accuracy LDO Voltage Tracking Regulator TLE4254EJA
Application Circuit

Model performance :
- dynamic behavior not modeled (CQ/ESR stability, line/load transient response,
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 = 1 Watt,
temperature = 85 °C

{ Please double click here to enter design criteria }

{ Load Resistance }
R_Load := 100;
{ Number of Thermal Model }
THERMAL_MODEL := 4;
{ Ambient Temperature }
T_AMB := 25;

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

The TLE4254EJA is a monolithic integrated high accuracy, low-dropout voltage tracking regulator.

It is designed to supply off-board systems, such as sensors in powertrain management systems
under the severe conditions of automotive applications. With supply voltages up to 40 V, the
output voltage follows a reference voltage applied at the adjust input with very high accuracy.
The reference voltage can be applied directly to the adjust input or by an external resistor
divider and can be a minimum of 2.0 V. The output is able to drive loads up to 70 mA while
following the for example 5 V output of a main voltage regulator acting as reference with high
accuracy.
 
The TLE4254EJA has additional protection functions against reverse polarity and short circuit
to GND and battery.



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Product info: TLE4254EJA
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