描述 Description

The TLF50241EL is a high frequency PWM step-down DC/DC converter with an integrated PMOS power switch, packaged in a small PG-SSOP-14 with exposed pad. The wide input voltage range from 4.75 to 45 V makes the TLF50241EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive environmental conditions.The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors, resulting in a low, predictable output voltage ripple and in minimized consumption of board space.In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency. Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption.

特性 Features

? 500 mA step down voltage regulator
? 5 V Output voltage
? ± 2% output voltage tolerance
? Low quiescent current (less than 45μA at nominal battery voltage)
? Current mode PWM regulation
? PFM mode for light load current
? Input voltage range from 4.75V to 45V
? Integrated power transistor
? 2.2 MHz switching frequency
? 100% Duty cycle
? Synchronization input
? Integrated compensation
? Integrated soft-start function
? Reset generator with adjustable threshold
? Input undervoltage lockout
? Suited for automotive applications: Tj = -40 °C to +150 °C
? Green Product (RoHS compliant)
? AEC Qualified
? Pin-compatible family approach

優(yōu)勢(shì):
? Low current consumption for permanently Vbat-connnected systems
? High switching frequency reduces value and size of coil and output capacitor
? Low drop-out operation due to 100% DC
? No external components required for compensation and soft-start
? Flexibility in setting reset threshold
? One base design for multiple requirements by family approach

應(yīng)用 Application

? Body
? Cluster
? Infotainment
? General purpose replacement of LDO

簡(jiǎn)介

TLF50241EL屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由制造生產(chǎn)的TLF50241EL穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級(jí)設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會(huì)通過該元件。