MAX8560

PRODUCTION

4MHz, 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN

First 4MHz Step-Down DC-DC Converters Deliver 500mA with Over 90% Efficiency in SOT23 and TDFN

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.13

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Part Details

Up to 4MHz PWM Switching Frequency
500mA Guaranteed Output Current
40µA (typ) Quiescent Current
Adjustable Output Voltage from 0.6V to 2.5V
Logic-Controlled Output Voltage (MAX8561)
Drives External Bypass FET (MAX8562)
±1.5% Initial Accuracy
Soft-Start Eliminates Inrush Current
Fast Voltage-Positioning Transient Response
Internal Synchronous Rectifier
2.7V to 5.5V Input
0.1µA Logic-Controlled Shutdown
Thermal Shutdown
Thin SOT23 or Space-Saving 3mm x 3mm x 0.8mm TDFN Packages

Part Models: 2
1ku List Price: Starting From $2.13

Documentation

Data Sheet 1

MAX8560-MAX8562: 4MHz, 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN Data Sheet (Rev.2) 10/13/2005

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX8560EZK+	5-TSOT-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX8560EZK+T	5-TSOT-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Internal Power Switch Buck Regulators 2
MAX1920	PRODUCTION	Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23
MAX1921	PRODUCTION	Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23

Evaluation Kits

Evaluation Kit for the MAX8561, MAX8562

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Features and Benefits

2.7V to 5.5V Input Voltage Range
0.6V to 2.5V Adjustable Output Voltage Range
VOUT1 = 1.8V/1.5V at 500mA (MAX8561)
VOUT2 = 1.2V at 400mA or Bypass Mode (MAX8562)
2MHz PWM Switching Frequency (MAX8561)
4MHz PWM Switching Frequency (MAX8562)
0.1µA (typ) Shutdown Current
Surface-Mount Construction
Fully Assembled and Tested

Product Details

The MAX8561 evaluation kit (EV kit) demonstrates the MAX8561/MAX8562s' up to 4MHz pulse-width modulated (PWM) step-down DC-DC converters. The two circuits are optimized for powering the DSP/microprocessor or the power amplifiers (PAs) in wireless applications. The MAX8561 circuit provides two adjustable output voltages in the 0.6V to 2.5V range from a 2.7V to 5.5V input, and can deliver 500mA of load current. In comparison, the MAX8562 circuit provides an adjustable voltage in the 0.6V to 2.5V range and a bypass mode where the output voltage is shorted to the input by an external MOSFET.

Applications

CDMA/RF Power-Amplifier Supplies
Cell Phones/Smartphones
Microprocessor/DSP Core Supplies
PDAs, DSC, and MP3 Players

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