Description

The MAX1775EEE+ is a dual step-down DC-DC converter that is designed to generate both the main and core supplies for a complete power solution for subnotebooks, PDAs, and other handheld devices. This component is a part of the DC DC Switching Controllers product category. The main output of MAX1775EEE+ is adjustable from +1.25V to +5.5V, with a load current of over 2A. Meanwhile, the core output is adjustable from 1V to 5V with load currents up to 1.5A. This dual high-efficiency synchronous rectified step-down converter operates up to 1.25MHz for small external components and can use synchronous rectifiers to achieve efficiency up to 95%.

Specifications and features

• Product Category: DC DC Switching Controllers
• Dual High-Efficiency Synchronous Rectified Step-Down Converter
• Main Power Output: Adjustable from +1.25V to +5.5V with over 2A load current and up to 95% efficiency
• Core Power Output: Adjustable from 1V to 5V with up to 1.5A load current and up to 92% efficiency
• 100% (max) Duty Cycle
• Up to 1.25MHz Switching Frequency
• Input Voltage Range from +2.7V to +28V
• 170µA Quiescent Current
• 5µA Shutdown Current
• Digital Soft-Start
• Independent Shutdown Inputs

Application Scenarios

The MAX1775EEE+ can be used in subnotebooks, PDAs, and other handheld devices that require efficient and reliable power solutions. With its dual high-efficiency synchronous rectified step-down converter, it can generate both the main and core supplies needed to keep these devices functioning optimally.

Comparison

• Dual high-efficiency synchronous rectified step-down converter
• Adjustable main power output from +1.25V to +5.5V with over 2A load current
• Adjustable core power output from 1V to 5V with up to 1.5A load current
• Up to 95% efficiency
• 100% (max) duty cycle
• Up to 1.25MHz switching frequency
• Digital soft-start
• Independent shutdown inputs

• The input voltage range is limited to +2.7V to +28V