MAX780

Dual-Slot, PCMCIA Analog Power Controller

Occupies Only 0.09 Sq. Inch, House Internal V_PP Switches and External V_CC Drivers, MAX780A/B/C Have V_PP Valid Output

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Overview

SSOP Circuit Fits in 0.09in²
Smallest Complete Analog Controller for Two PCMCIA (Release 2.0/JEIDA 4.1) PC Card Sockets
Dual V_CC Contols and V_PP Outputs
Logic-Compatible with Industry-Standard PCMCIA Digital Controllers:
- Intel 82365SL_DF
- Fujitsu MB86301
- Chips and Technology F8680
- Cirrus Logic CL-PD6720
0V/+5V/+12V/High-Impedance V_PP Outputs
Internal 1.6Ω V_PP Power Switches
Dual Voltage 3.3V/5V V_CC Operation
V_PP Power-Ready Status Signals
130µA Quiescent Supply Current (3.5µA in Shutdown)
Break-Before-Make Switching

The MAX780A provides the power switching and status signals necessary to control two Personal Computer Memory Card International Association (PCMCIA) Release 2.0 card slots. The MAX780A, used in conjunction with a PC Card Interface Digital Controller, forms a complete, minimum component count PCMCIA interface for palmtop and notebook computers.

The MAX780A incorporates two 0V/+5V/+12V/high-impedance power outputs for flash V_PP programming, level shifters for power MOSFET control of two separate +3.3V/+5V supplies, and two V_PP power-ready status signals. The MAX780A may be directly connected to the control outputs from a PCMCIA digital controller, or may be configured to use internal edge-triggered registers for connection to the CPU data bus.

The MAX780B has all the features of the MAX780A but omits the reference and V_PP valid indicators. The MAX780C has all the features of the MAX780A but omits the registers for the digital inputs. The MAX780D omits the reference, the V_PP valid indicators, and the digital input registers.

Applications