General Description

The MAX1601/MAX1604 DC power-switching ICs contain a network of low-resistance MOSFET switches that deliver selectable VCC and VPP voltages to two CardBus or PC Card host sockets. Key features include ultra-low-resistance switches, small packaging, softswitching action, and compliance with PCMCIA specifications for 3V/5V switching.

Features

♦ Supports Two CardBus Sockets

♦ 1A, 0.08Ω Max VY VCC Switch (MAX1601 only)

1A, 0.14Ω Max VX VCC Switch

♦ Soft Switching for Low Inrush Surge Current

♦ Overcurrent Protection

♦ Overcurrent/Thermal-Fault Flag Output

♦ Thermal Shutdown at Tj = +150°C

♦ Independent Internal Charge Pumps

♦ Break-Before-Make Switching Action

♦ 10µA Max Standby Supply Current

♦ 5V and 12V Not Required for Low-RDS(ON) 3.3V Switching

♦ Complies with PCMCIA 3V/5V Switching Specifications

♦ Super-Small, 28-Pin SSOP Package (0.2in. or 5mm wide)

♦ System Management Bus (SMBus) Serial Interface

Applications

Desktop Computers

Data Loggers

Notebook Computers

Digital Cameras

Docking Stations

Printers

Handy-Terminals

PCMCIA Read/Write Drives