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MAX8640Z

Maxim Integrated Products
Part Number MAX8640Z
Manufacturer Maxim Integrated Products
Description 4MHz/2MHz Synchronous Step-Down DC-DC Converters
Published Oct 5, 2009
Detailed Description 19-3997; Rev 4; 2/09 KIT ATION EVALU E L B AVAILA Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters General...
Datasheet PDF File MAX8640Z PDF File

MAX8640Z
MAX8640Z

Overview
19-3997; Rev 4; 2/09 KIT ATION EVALU E L B AVAILA Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters General Description The MAX8640Y/MAX8640Z step-down converters are optimized for applications where small size, high efficiency, and low output ripple are priorities.
They utilize a proprietary PWM control scheme that optimizes the switching frequency for high efficiency with small external components and maintains low output ripple voltage at all loads.
The MAX8640Z switches at up to 4MHz to allow a tiny 1µH inductor and 2.
2µF output capacitor.
The MAX8640Y switches at up to 2MHz for higher efficiency while still allowing small 2.
2µH and 4.
7µF components.
Output current is guaranteed up to 500mA, while typical quiescent current is 28µA.
Factory-preset output voltages from 0.
8V to 2.
5V eliminate external feedback components.
Internal synchronous rectification greatly improves efficiency and replaces the external Schottky diode required in conventional step-down converters.
I...


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