描述 Description

The TLE4252D is a monolithic integrated low-drop voltage tracking regulator in a very small SMD package PG-TO252-5-11. It is designed to supply off-board systems, e.g. sensors in engine management systems under the severe conditions of automotive applications. Therefore the device is equipped with additional protection functions against reverse polarity and short circuit to GND and battery. With supply voltages up to 40 V, the output voltage follows a reference voltage applied at the adjust input with high accuracy. The reference voltage applied directly to the adjust input or by an e.g. external resistor divider can be 1.5 V minimum. The output is able to drive loads up to 250 mA. The TLE 4252 tracker can be switched into stand-by mode to reduce the current consumption to very low values. This feature makes the IC suitable for low power battery applications.

特性 Features

? Output tracking tolerance to reference ≤ ±0.2%
? Output voltage adjust down to 1.5 V
? 250 mA output current capability
? Enable function
? Very low current consumption in OFF mode
? Wide operation range: up to 40 V
? Wide temperature range: -40 °C ≤ T j ≤ 150 °C
? Output protected against short circuit to GND and Battery
? Over temperature protection
? Reverse polarity proof
? Green Product (RoHS compliant)
? AEC Qualified

優(yōu)勢:
? Efficient and accurate voltage replication
? Heat distribution in the system
? Robust tracking supply

應(yīng)用 Application

? Sensor Supply
? Heat distribution
? Secondary μcontroller supply

簡介

TLE4252D屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由制造生產(chǎn)的TLE4252D穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時(shí)會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。