TPS2105中文资料使能端高电平有效、具有工业级工作温度范围的 2.7V 至 5.5V、250mΩ、0.5A、1.3Ω、0.1A 电源多路复用器数据手册TI规格书

描述 Description

The TPS2104 and TPS2105 are dual-input, single-output power switches designed to provide uninterrupted output voltage when transitioning between two independent power supplies. Both devices combine one n-channel (250 m) MOSFET with a single output. The p-channel MOSFET (IN2) is used with auxiliary power supplies that deliver lower current for standby modes. The n-channel MOSFET (IN1) is used with a main power supply that delivers higher current required for normal operation. Low on-resistance makes the n-channel the ideal path for higher main supply current when power-supply regulation and system voltage drops are critical. When using the p-channel MOSFET, quiescent current is reduced to 0.75 uA to decrease the demand on the standby power supply. The MOSFETs in the TPS2104 and TPS2105 do not have the parasitic diodes, typically found in discrete MOSFETs, thereby preventing back-flow current when the switch is off.

特性 Features

• Dual-Input, Single-Output MOSFET Switch With No Reverse Current Flow (No Parasitic Diodes)
• IN1 . . . 250-m, 500-mA N-Channel; 18-uA Supply Current
• IN2 . . . 1.3-, 100-mA P-Channel; 0.75-uA Supply Current (VAUX Mode)
• Advanced Switch Control Logic
• CMOS and TTL Compatible Enable Input
• Controlled Rise, Fall, and Transition Times
• 2.7 V to 5.5 V Operating Range
• SOT-23-5 and SOIC-8 Package
• \\x9640°C to 85°C Ambient Temperature Range
2-kV Human Body Model, 750-V Charged Device Model, 200-V Machine-Model ESD Protection
• Typical Applications
• Notebook and Desktop PCs
• Cell phone, Palmtops, and PDAs
• Battery Management

简介

TPS2105属于集成电路（IC）的OR控制器理想二极管。由TI制造生产的TPS2105OR 控制器，理想二极管理想二极管控制器也称为 OR-ing 控制器，可用于以仅允许单向电流的方式控制外部通道晶体管（通常为 FET），类似于整流二极管，但传导损耗低得多。在其他应用中，它们通常用于在为了冗余和增加电流输出能力而并行连接的电源中提供逆流保护。