19-0205; Rev 0; 7/94 KI ION UAT BLE L A EV ILA AVA T PDA/Hand-Held Computer Power Controller _______________General Description The MAX781 is a system-engineered power-supply controller for subnotebook computers, PDAs, or similar battery-powered equipment.
It provides high-performance, step-down (buck), pulse-width modulated (PWM) control for generating +3.
3V and constant-current battery charging.
Dual PCMCIA VPP outputs are powered by a regulated flyback winding.
Five high-side gate drivers and a buffered analog multiplexer are also included.
All functions are controlled by an SPI/Microwire™ compatible four-wire serial interface.
The MAX781 generates +3.
3V with high efficiency through sy...

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