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MAX8640Z Datasheet 4mhz/2mhz Synchronous Step-down DC-dc Converters

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-3997; Rev 4; 2/09 KIT ATION EVALU E L B AVAILA Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC.

This datasheet includes multiple variants, all published together in a single manufacturer document.

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.

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+.

More Datasheets from 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
MAX8645Y 1x/1.5x/2x White LED Charge Pumps
MAX8646 2MHz Step-Down Regulator
MAX8647 (MAX8647 / MAX8648) Ultra-Efficient Charge Pumps
MAX8648 (MAX8647 / MAX8648) Ultra-Efficient Charge Pumps
MAX8649 1.8A Step-Down Regulator
MAX8600 Single-/Dual-Input 1-Cell Li Chargers

MAX8640Z Distributor