MAX1604 Datasheet | Maxim Integrated

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 Card Bus or PC Card host sockets. Key features include ultra-low-resistance switches, small packaging, softswitching action, and pliance with PCMCIA specifications for 3V/5V switching. 3.3V-only power switching for fast, 32-bit Card Bus applications is supported in two ways: stiff, low-resistance 3.3V switches allow high 3.3V load currents (up to 1A); and pletely independent internal charge pumps let the 3.3V switch operate normally, even if the +5V and +12V supplies are disconnected or turned off to conserve power. The internal charge pumps are regulating types that draw reduced input current when the VCC switches are static. Also, power consumption is automatically reduced to 10µA max when the switches are programmed to high-Z or GND states over the serial interface, unlike other solutions that may require a separate shutdown-control input. Other key features include guaranteed specifications for output current limit level, and guaranteed specifications for output rise/fall times (in pliance with PCMCIA specifications). Reliability is enhanced by thermal-overload protection, accurate current limiting, an overcurrent-fault flag output, undervoltage lockout, and extra ESD protection at the VCC/VPP outputs. The SMBus serial interface is flexible, and can tolerate logic input levels in excess of the positive supply rail. The MAX1604 and MAX1601 are identical, except for the MAX1604’s VY switch, which has roughly threetimes the on-resistance (typically 140m Ω ).The MAX1601/MAX1604 fit two plete Card Bus/PCMCIA switches into a space-saving, narrow (0.2in. or 5mm wide) SSOP package. ____________________________Features o Supports Two Card Bus Sockets o 1A, 0.08Ω Max VY VCC Switch (MAX1601 only) 1A, 0.14Ω Max VX VCC Switch o Soft Switching for Low Inrush Surge Current o Overcurrent Protection o Overcurrent/Thermal-Faul...