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Product details

Parameters

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 Load capacitance (Min) (µF) 10 Rating Automotive Regulated outputs (#) 1 Features Power Good, Reverse Voltage Protection Accuracy (%) 2 PSRR @ 100 KHz (dB) 27 Dropout voltage (Vdo) (Typ) (mV) 250 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 TO-252 (KVU) 5 67 mm² 6.6 x 10.11 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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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Technical documentation

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Type Title Date
* Data sheet TLE4275-Q1 5-V Low-Dropout Voltage Regulator datasheet (Rev. I) Nov. 04, 2014
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
User guide MLTLDO2EVM-037 Evaluation Module User's Guide May 22, 2020
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical article Discrete SBCs: versatile and scalable solutions for any application Jul. 27, 2017
More literature Fundamentals of designing with LDOs in auto battery direct connect applications Feb. 27, 2017
Application note TLE4275 Low Temperature Stability Jan. 18, 2012

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
29
Description

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 (...)

Features
  • Supports most LDO linear regulators in
    • DDA package
    • 3-pin and 5-pin KVU package
    • DCY package

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
HTSSOP (PWP) 20 View options
TO-252 (KVU) 5 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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