Inicio Gestión de la energía Reguladores lineales y de baja salida (LDO)

TLE4275-Q1

ACTIVO

Regulador de tensión de caída baja, 450 mA y sin batería (42 V) para automoción con RESTABLECIMIENTO

Detalles del producto

Output options Fixed Output Iout (max) (A) 0.45 Vin (max) (V) 42 Vin (min) (V) 5.5 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 33 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Power good, Reverse voltage protection Accuracy (%) 2 PSRR at 100 KHz (dB) 27 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.45 Vin (max) (V) 42 Vin (min) (V) 5.5 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 33 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Power good, Reverse voltage protection Accuracy (%) 2 PSRR at 100 KHz (dB) 27 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 TO-252 (KVU) 5 66.726 mm² 6.6 x 10.11 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Qualified for Automotive Applications
  • Output Voltage 5 V ± 2%
  • Very Low Current Consumption
  • Power-On and Undervoltage Reset
  • Reset Low-Level Output Voltage < 1 V
  • Very Low Dropout Voltage
  • Short-Circuit Proof
  • Reverse-Polarity Proof
  • Qualified for Automotive Applications
  • Output Voltage 5 V ± 2%
  • Very Low Current Consumption
  • Power-On and Undervoltage Reset
  • Reset Low-Level Output Voltage < 1 V
  • Very Low Dropout Voltage
  • Short-Circuit Proof
  • Reverse-Polarity Proof

The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device regulates an input voltage up to 45 V to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65 V (typ). By the use of an external delay capacitor, one can program the reset delay time.

The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1 Ω in series with CIN dampens the oscillation of input inductance and input capacitance. The output capacitor, COUT, stabilizes the regulation circuit. The specification for stability is at COUT ≥ 22 µF and ESR ≤ 5 Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68 µF within the operating temperature range. See the application report on low-temperature stability, SLVA501, for further details.

The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The device also incorporates a number of internal circuits for protection against: Overload, Overtemperature, and Reverse Polarity.

The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device regulates an input voltage up to 45 V to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65 V (typ). By the use of an external delay capacitor, one can program the reset delay time.

The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1 Ω in series with CIN dampens the oscillation of input inductance and input capacitance. The output capacitor, COUT, stabilizes the regulation circuit. The specification for stability is at COUT ≥ 22 µF and ESR ≤ 5 Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68 µF within the operating temperature range. See the application report on low-temperature stability, SLVA501, for further details.

The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The device also incorporates a number of internal circuits for protection against: Overload, Overtemperature, and Reverse Polarity.

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Documentación técnica

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* Data sheet TLE4275-Q1 5-V Low-Dropout Voltage Regulator datasheet (Rev. I) PDF | HTML 04 nov 2014
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 ago 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 ago 2017
Technical article Discrete SBCs: versatile and scalable solutions for any application PDF | HTML 27 jul 2017
More literature Fundamentals of designing with LDOs in auto battery direct connect applications 27 feb 2017
Application note TLE4275 Low Temperature Stability 18 ene 2012

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

MLTLDO2EVM-037 — Módulo de evaluación del regulador de voltaje lineal LDO universal para paquetes DCY, DDA y KVU

The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU, (...)

Guía del usuario: PDF
Paquete Pasadores Descargar
HTSSOP (PWP) 20 Ver opciones
TO-252 (KVU) 5 Ver opciones
TO-263 (KTT) 5 Ver opciones

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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