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Description

The G571 PC Card power-interface switch provides an integrated power-management solution for a single PC Cards. All of the discrete power MOSFETs, a logic section, current limiting, and thermal protection for PC Card control are combined on a single integrated circuit. The circuit allows the distribution of 3.3V, 5V, and/or 12V card power, and is compatible with many PCMCIA controllers. The current-limiting feature eliminates the need for fuses, which reduces component count and improves reliability. Current-limit reporting can help the user isolate a system fault to the PC Card.

The G571 features a 3.3V low voltage mode that allows for 3.3V switching without the need for 5V. Bias power can be derived from either the 3.3V or 5V inputs. This facilitates low-power system designs such as sleep mode and pager mode where only 3.3V is available.

End equipment for the G571 includes notebook computers, desktop computers, personal digital assistants (PDAs), digital cameras and bar-code scanners.

Features

■ Fully Integrated VCC and VPP Switching for Single-Slot PC CardTM Interface

■ Low rDS(on) (180-mΩ 5V VCC Switch and 3.3V VCC Switch)

■ Compatible With Controllers From Cirrus, Ricoh, O2Micro, Intel, and Texas Instruments

■ 3.3V Low-Voltage Mode

■ Meets PC Card Standards

■ 12V Supply Can Be Disabled Except During 12V Flash Programming

■ Short Circuit and Thermal Protection

■ Space-Saving 16 Pin SSOP

■ Compatible With 3.3V, 5V, and 12V PC Cards

■ Break-Before-Make Switching

Application

■ Notebook PC

■ Electronic Dictionary

■ Personal Digital Assistance

■ Digital still Camera