MCP1651R-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock

Name: MCP1651R-E/MS
Brand: Microchip
SKU: MCP1651R-E/MS
Availability: InStock

Microchip MCP1651R-E/MS is a current-mode PWM boost controller with low battery UVLO at 2V, operating from 2.7V to 5.5V input. Features MSOP-8 package. Available from stock worldwide with fast shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP1651R-E/MSSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: MCP1651R-E/MS Datasheet PDF
Category: Integrated Circuit
Price: From $1.4300(MOQ 1)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP1651R-E/MS?

Current-mode PWM control for stable boost regulation with 2.7V to 5.5V input range
Low battery UVLO threshold at 2V prevents operation under severely discharged conditions
Compact MSOP-8 package enables space-efficient PCB layouts in portable and battery-powered designs
Supports 3.3V nominal input for seamless integration with single-cell Li-ion and alkaline battery systems

What is MCP1651R-E/MS used for?

MCP1651R-E/MS is well suited for battery-powered portable electronics requiring boost conversion from single or dual-cell battery stacks. It fits handheld instruments, IoT sensor nodes, and wireless modules where input voltages can sag to 2.7V. Its compact MSOP-8 footprint makes it a natural choice for space-constrained PCBs needing stable regulated output from a declining battery.

What are the specifications of MCP1651R-E/MS?

Manufacturer Package Code	MSOP-8
Factory Lead Time	17Weeks
YTEOL	8
Analog IC - Other Type	SWITCHING CONTROLLER
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	5.5V
Input Voltage-Min	2.7V
Input Voltage-Nom	3.3V
JESD-30 Code	S-PDSO-G8
JESD-609 Code	e3
Number of Functions	1
Output Voltage-Max	100V
Output Voltage-Min	3.3V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	TSSOP8,.19
Package Shape	SQUARE
Package Style	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Screening Level	TS 16949
Surface Mount	YES
Switcher Configuration	BOOST
Switching Frequency-Max	850kHz
Temperature Grade	AUTOMOTIVE
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	0.65mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	40
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.60
Country of Origin	Thailand

Where can I find the MCP1651R-E/MS datasheet?

MCP1651R-E/MS Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP1651R-E/MS?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the input voltage range supported by MCP1651R-E/MS?

MCP1651R-E/MS operates from a minimum input voltage of 2.7V up to 5.5V, with a nominal design point of 3.3V. This 2.7V to 5.5V range makes it suitable for single-cell Li-ion and dual-cell alkaline battery applications where supply voltage varies significantly during discharge.

At what voltage does the MCP1651R-E/MS low-battery UVLO trigger?

The under-voltage lockout (UVLO) threshold activates at 2V, shutting down the controller to protect downstream circuitry from erratic behavior when the battery is severely discharged. This 2V trip point ensures the converter stops switching before input voltage drops to unusable levels.

Which PCB form factors benefit most from the MSOP-8 package of MCP1651R-E/MS?

The MSOP-8 package measures approximately 3.0mm x 3.0mm, making it ideal for compact wearable devices, IoT sensor modules, and portable medical equipment where board space is limited. Its 8-pin small-outline profile allows tight component placement alongside passives and inductors in a minimal footprint.

How does the current-mode PWM control technique in MCP1651R-E/MS improve converter stability?

Current-mode pulse-width modulation directly senses inductor current each switching cycle, providing inherent cycle-by-cycle current limiting and faster transient response compared to voltage-mode control. This technique simplifies loop compensation and improves line regulation across the 2.7V to 5.5V input range, benefiting designs with rapidly changing load currents.

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From $1.4300

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Qty.	Unit Price	Ext. Price
1+	$1.9700	$1.97
100+	$1.4900	$149.00
1000+	$1.4400	$1440.00
5000+	$1.4300	$7150.00

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OriginChina (Authorized)

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MCP1651R-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock

What are the key features of MCP1651R-E/MS?

What is MCP1651R-E/MS used for?

What are the specifications of MCP1651R-E/MS?

Compliance & Regulatory

Where can I find the MCP1651R-E/MS datasheet?

What are equivalent replacements for MCP1651R-E/MS?

Frequently Asked Questions

What is the input voltage range supported by MCP1651R-E/MS?

At what voltage does the MCP1651R-E/MS low-battery UVLO trigger?

Which PCB form factors benefit most from the MSOP-8 package of MCP1651R-E/MS?

How does the current-mode PWM control technique in MCP1651R-E/MS improve converter stability?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

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About Microchip

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