The MAX1602 DC power-switching IC contains a network of low-resistance MOSFET switches that deliver selectable VCC and VPP voltages to a single CardBus or PC Card host socket. Key features include low-resistance switches, small packaging, soft-switching action, and compliance with PCMCIA specifications for 3V/5V switching. 3.3V-only power switching for fast, 32-bit CardBus applications is supported in two ways: low-resistance 3.3V switches allow high 3.3V load currents (up to 1A); and completely 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. Power consumption is automatically reduced to 11µA max when the outputs are high-Z or GND.
Other key features include guaranteed specifications for output current limit level, and guaranteed specifications for output rise/fall times (in compliance with PCMCIA specifications). Reliability is enhanced by thermal-overload protection, accurate current limiting, an overcurrent-fault flag output, and undervoltage lock-outs. The CMOS/TTL-logic interface is flexible, and can tolerate logic input levels in excess of the positive supply rail.
The MAX1602 fits a complete CardBus/PCMCIA switch into a space-saving, 16-pin QSOP package.
关键特性
应用/使用
Supports a Single PC Card/CardBus Socket
1A, 0.25Ω Max 3.3V VCC Switch
1A, 0.25Ω Max 5V 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
11µA 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 16-Pin QSOP Package
Code Compatible with:
Cirrus CL-PD67XX Family
Databook DB86184
Intel 82365SL (industry-standard coding)
数据记录
坞站
手持终端
PCMCIA读/写驱动器
Key Specifications: 3.3V/5V PCMCIA Cards and Hosts
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