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Microchip MCP16251 | Demoboard ARD00797

MCP16251 One-Cell Boost Converter with External UVLO Circuit Reference Design

Overview

TopologyBoost Converter
Input voltage0.82-5.5 V
Output 15.5 V / 0.25 A
IC revisionA

Description

Microchip’s MCP16251 device is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC Converter. The very low quiescent current makes it ideal for battery-powered applications. Furthermore, the device provides a true output disconnect feature while in shutdown (EN = GND). The MCP16251 device consumes less than 0.6 μA from the battery when in the shutdown state. The MCP16251 automatically selects the best operating mode for efficiency: Pulse-Width Modulation (PWM) or Pulse-Frequency Modulation (PFM). The device has a very low (4 μA) quiescent current (not switching, measured at output), a wide input voltage range (0.35 to 5.5V) and a low start-up voltage (0.82V) at a 1 mA load current.

Features

  • Up to 96% Typical Efficiency
  • 4 μA Quiescent Current
  • PFM Switching mode for Light Loads, High Efficiency and Extended Battery Run Time
  • Low Input Start-up Voltage, Typically 0.82V at a 1 mA Load Current
  • Low Shutdown Voltage (continuously operating down to 0.35V input under light loads)
  • True Output Disconnect Shutdown Option
  • 14 μA Typical No Load Input Current

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
MountPoles Samples
744029004SPEC
9 files WE-TPC SMT Tiny Power Inductor 4.7 1 0.8 170 65 SMT
744025004SPEC
9 files WE-TPC SMT Tiny Power Inductor 4.7 1.35 1.7 100 84 SMT
744031004SPEC
9 files WE-TPC SMT Tiny Power Inductor 4.7 1.2 0.9 90 75 SMT
744042004SPEC
9 files WE-TPC SMT Tiny Power Inductor 4.7 1.72 1.65 70 70 SMT
418121160801SPEC
6 files WS-DISV Small Compact SMT Flat Actuator with Top Tape 2.54 mm 0.025 1
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
MountPoles Samples