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MAX8640Z - 4MHz/2MHz Synchronous Step-Down DC-DC Converters

Download the MAX8640Z datasheet PDF. This datasheet also covers the MAX8640Y variant, as both devices belong to the same 4mhz/2mhz synchronous step-down dc-dc converters family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX8640Y/MAX8640Z step-down converters are optimized for applications where small size, high efficiency, and low output ripple are priorities.

Key Features

  • y SC70 and µDFN Packages 500mA Guaranteed Output Current 4MHz or 2MHz PWM Switching Frequency Tiny External Components: 1µH/2.2µF or 2.2µH/4.7µF 28µA Quiescent Current Factory Preset Outputs from 0.8V to 2.5V ±1% Initial Accuracy Low Output Ripple at All Loads Ultrasonic Skip Mode Down to 1mA Loads Ultra-Fast Line- and Load-Transient Response Fast Soft-Start Eliminates Inrush Current MAX8640Y/MAX8640Z Ordering Information PART.
  • MAX8640YEXT08+T MAX8640YEXT10+T MAX8640YEXT11+T MAX8640YEXT12+.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX8640Y_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX8640Y 4MHz/2MHz Synchronous Step-Down DC-DC Converters
MAX8643 2MHz Step-Down Regulator
MAX8643A 2MHz Step-Down Regulator
MAX8645X 1x/1.5x/2x White LED Charge Pumps
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.