TLE4254集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TLE4254属于集成电路（IC）的线性+开关稳压器。由英飞凌科技股份公司制造生产的TLE4254稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

Functional Description

The TLE4254 is a monolithic integrated low-dropout voltage tracking regulator with high accuracy in small PGDSO-8 packages. The IC is designed to supply off-board systems, e. g. sensors in powertrain management systems under the severe conditions of automotive applications. Therefore, the IC is equipped with additional protection functions against reverese polarity and short circuit to GND and battery.

特性 Features

• 70 mA output current capability

• Very tight output tracking tolerance to reference

• Output voltage adjustable down to 2.0 V

• Stable operation with 1 µF ceramic output capacitor

• Flexibility of output voltage adjust higher or lower than reference, proportional to the reference voltage (version GA / EJ A)

• Status output to indicate short circuits at the output (version GS / EJ S)

• Very low dropout voltage of typ. 0.2 V @ maximum output current

• Combined reference / enable input

• Very low current consumption in OFF mode

• Wide input voltage range -20 V ≤ VI ≤ +45 V

• Wide temperature range: -40 °C ≤ Tj ≤ 150 °C

• Output protected against short circuit to GND and battery

• Input protected against reverse polarity

• Overtemperature protection

• Green product (RoHS compliant)

• AEC qualified