Microchip MCP1640BT DC-DC Boost Step-Up Regulator Adjustable 2V-5.5V Output

The Microchip MCP1640BT DC-DC Boost Step-Up Regulator is a compact, high-efficiency, fixed-frequency synchronous step-up converter, offering efficiency of up to 96% in an SOT-23-6 package.

The MCP1640BT provides an adjustable output from 2V to 5.5V and is designed for devices powered by a wide range of battery sources, including single-cell, two-cell, or three-cell alkaline, NiCd, or NiMH batteries, as well as one-cell Li-Ion or Li-Polymer batteries. Its advanced low-voltage technology allows the device to start up from an input as low as 0.65V without high inrush current or output voltage overshoot.

Key Features

• Integrated Switches: Includes a low-resistance N-channel boost switch and a synchronous P-channel switch to minimise power loss.
• Automatic Mode Switching: Operates automatically in PFM or PWM mode to suit varying load conditions.
• Low Quiescent Current: Consumes only 19µA in PFM mode under no-load conditions.
• True Load Disconnect: In shutdown mode (EN = GND), provides a complete disconnect between input and output, with a shutdown current of less than 1µA.
• Comprehensive Protection: Includes inrush current limiting, internal soft-start, over-temperature protection, and low-noise anti-ringing control.
• Simplified Design: All necessary compensation and protection circuitry is integrated internally, reducing the number of external components required.

Technical Specifications

• Topology: Synchronous Boost (Step-Up)
• Input Voltage Range: 0.65V to 5.5V
• Output Voltage Range: Adjustable from 2V to 5.5V
• Package: SOT-23-6
• Dimensions: Width 3.3, Depth 1.5, Height 4.3
• Weight: 0.047 g

Applications

Suited to portable, battery-powered devices where compact size, efficiency and low quiescent current are required. The regulator can be used to power devices from single or multi-cell alkaline, NiCd, NiMH, Li-Ion, or Li-Polymer battery sources.

Choose the Microchip MCP1640BT when a compact, high-efficiency step-up regulator with an adjustable 2V to 5.5V output is required.