MAX8640YELT82+

Obsolete

Analog Devices Inc./Maxim Integrated

IC REG BUCK 2.85V 500MA 6UDFN

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MAX8640YELT82+

Obsolete

Analog Devices Inc./Maxim Integrated

IC REG BUCK 2.85V 500MA 6UDFN

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX8640 Series

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. Internal fast soft-start eliminates inrush current so as to reduce input capacitor requirements.The MAX8640Y/MAX8640Z are available in the tiny 6-pin, SC70 (2.0mm x 2.1mm) and µDFN (1.5mm x 1.0mm) packages. Both packages are lead-free.ApplicationsCell Phones, PDAs, DSCs, MP3sI/O PowerMicroprocessor/DSP Core PowerOther Handhelds Where Space Is Limited

Technical Specifications

Parameters and characteristics for this part

Specification	MAX8640YELT82+

Current - Output	500 mA
Frequency - Switching	1.5 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Fixed
Package / Case	6-WFDFN
Package Length	1.5 mm
Package Name	6-µDFN
Package Width	1 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Min/Fixed)	2.85 V

MAX8640 Series

Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters

Part	Package Name	Number of Outputs	Voltage - Input (Min)	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Current - Output	Output Configuration	Synchronous Rectifier	Voltage - Input (Max)	Frequency - Switching	Package / Case	Function	Voltage - Output (Min/Fixed)	Topology	Package Length	Package Width
Analog Devices Inc./Maxim Integrated MAX8640ZEXT15+T	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	3.9 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.5 V	Buck
Analog Devices Inc./Maxim Integrated MAX8640YEXT16+T	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	2 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.6 V	Buck
Analog Devices Inc./Maxim Integrated MAX8640ZEXT18+T	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	4 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.8 V	Buck
Analog Devices Inc./Maxim Integrated MAX8640YELT13+
Analog Devices Inc./Maxim Integrated MAX8640YELT15+T
Analog Devices Inc./Maxim Integrated MAX8640YEXT13+
Analog Devices Inc./Maxim Integrated MAX8640ZEXT12+T	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	3.6 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.2 V	Buck
Analog Devices Inc./Maxim Integrated MAX8640YELT12+T	6-µDFN	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	1.8 MHz	6-WFDFN	Step-Down	1.2 V	Buck	1.5 mm	1 mm
Analog Devices Inc./Maxim Integrated MAX8640YEXT19+T	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	2 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.9 V	Buck
Analog Devices Inc./Maxim Integrated MAX8640ZEXT13+	SC-70-6	1	2.7 V	Fixed	85 °C	-40 °C	Surface Mount	500 mA	Positive	Yes	5.5 V	3.7 MHz	6-TSSOP SC-88 SOT-363	Step-Down	1.3 V	Buck

Pricing

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CAD

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Documents

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