The MAX8560/MAX8561/MAX8562 step-down DC-DC converters are optimized for applications that prioritize small size and high efficiency. They utilize a proprietary hysteretic-PWM control scheme that switches with fixed frequency and is adjustable up to 4MHz, allowing customers to trade efficiency for smaller external components. Output current is guaranteed up to 500mA, while quiescent current is only 40µA (typ).
Internal synchronous rectification greatly improves efficiency and eliminates the external Schottky diode required in conventional step-down converters. Built-in soft-start eliminates inrush current to reduce input capacitor requirements. The MAX8561 features logic-controlled output voltage, while the MAX8562 drives an external bypass FET.
The MAX8560 is available in a 5-pin Thin SOT23 package. The MAX8561/MAX8562 are available in space-saving 8-pin 3mm x 3mm Thin DFN packages.
Key Features
Applications/Uses
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
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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