IFX81481ELV数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

描述 Description

The IFX81481ELV is a high efficient synchronous PWM step-down DC/DC controller with external power switches, packaged in a small PG-SSOP-14 with exposed pad. The controller is capable to drive external power MOSFETs and is ideally suited for load currents from 2A up to 10A. A current limitation feature is provided which can be adjusted to application specific requirements. The current limit can be implemented either in Rdson configuration, measuring the voltage over the high-side switch while it is closed, or in a shunt configuration where a shunt resistor above the high-side switch is used to measure the voltage.

特性 Features

• Synchronous step down Controller driving currents up to 10A
• Current limitation adjustable with Shunt resistor or Rdson
• Adjustable output voltage
• ± 2% output voltage tolerance
• External power transistors
• Integrated bootstrap diode
• PWM regulation
• Very Low Dropout Operation: max Duty Cycle higher than 99%
• Input voltage range from 4.75V to 45V
• Adjustable switching frequency from 100 to 700 kHz
• Synchronization input
• Very low shutdown current consumption (<2μA)
• Soft-start function
• Input undervoltage lockout
• Suited for industrial applications: Tj = -40°C to +125°C
• Green Product (RoHS compliant)

优势:

应用 Application

• General Purpose
• DC/DC Pre-regulation
• Battery forklifts
• (multi-)Battery chargers
• FPGAs
• PoL for 12V/24V rails
• Power supply cards
• Video imaging

简介

IFX81481ELV属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的IFX81481ELVDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。