TPS2220B中文资料单 PC 卡串行接口电源开关数据手册TI规格书

描述 Description

The TPS2220B power-interface switch provides an integrated power-management solution for single Card sockets. The device allows the controlled distribution of 3.3 V, 5 V, and 12 V to one card slot. The current-limiting and thermal-protection features eliminate the need for fuses. Current-limit reporting helps the user isolate a system fault. The switch rDS(on) and current-limit values have been set for the peak and average current requirements stated in the PC Card specification, and optimized for cost.
Like the TPS2220A this device supports independent VPP/VCC switching. The TPS2220B is pin compatible with the TPA2220A execept for pin 20 of the TPS2220B which has no connection.

特性 Features

·Single-Slot Switch: TPS2220B ·Fast Current Limit Response Time ·Fully Integrated VCC and VPP Switching for 3.3 V, 5 V, and 12 V ·Meets Current PC Card™ Standards ·Vpp Output Selection Independent of VCC ·12-V and 5-V Supplies Can Be Disabled ·TTL-Logic Compatible Inputs ·Short-Circuit and Thermal Protection ·24-Pin HTSSOP and 24-Pin SSOP ·140-µA (Typical) Quiescent Current from 3.3-V Input ·Break-Before-Make Switching ·Power-On Reset ·–40°C to 85°C Operating Ambient Temperature Range ·APPLICATIONS ·Notebook and Desktop Computers ·Bar Code Scanners ·Digital Cameras ·Set-Top Boxes ·PDAs
PC Card is a trademark of PCMCIA (Personal Computer Memory Card International Association). PowerPAD is a trademark of Texas Instruments.