MCP1661T-E/MNY Microchip Integrated Circuit (Small Outline No-lead) In Stock

Name: MCP1661T-E/MNY
Brand: Microchip
SKU: MCP1661T-E/MNY
Availability: InStock

Microchip MCP1661T-E/MNY is a current-mode PWM non-synchronous boost switching regulator with 2.4 V to 5.5 V input range and up to 32 V output in an 8-pin TDFN package, designed for battery-powered LED drivers, white LED backlights, and portable power conversion applications.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP1661T-E/MNYSmall Outline No-lead

Quick Facts

Manufacturer: Microchip
Package: Small Outline No-lead
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: MCP1661T-E/MNY Datasheet PDF
Category: Integrated Circuit
Price: From $0.5761(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 MCP1661T-E/MNY?

Non-synchronous boost topology supporting output voltages up to 32 V from a 2.4 V to 5.5 V input
Current-mode PWM control for fast transient response and inherent cycle-by-cycle current limiting
Operates from 2.4 V minimum input enabling direct 3.7 V single-cell lithium battery operation
8-pin TDFN package with exposed pad for efficient thermal dissipation in compact designs
Suitable for high-brightness LED string driving and portable power supply applications

What is MCP1661T-E/MNY used for?

MCP1661T-E/MNY is used in battery-operated devices requiring a regulated high-voltage output from a low-voltage cell, including white LED backlights for LCD panels, handheld instrument power rails, and portable medical device supplies. Its 2.4 V input capability and 32 V output range make it effective for driving series-connected LED strings in thin lighting modules powered by a single-cell lithium battery.

What are the specifications of MCP1661T-E/MNY?

Manufacturer Package Code	TDFN-8
Factory Lead Time	7Weeks
YTEOL	13
Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	5.5V
Input Voltage-Min	2.4V
Input Voltage-Nom	3.3V
JESD-30 Code	R-PDSO-N8
JESD-609 Code	e4
Number of Functions	1
Output Current-Max	0.2A
Output Voltage-Max	32V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOLCC8,.12,20
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Screening Level	TS 16949
Surface Mount	YES
Switcher Configuration	BOOST
Switching Frequency-Max	575kHz
Temperature Grade	AUTOMOTIVE
Terminal Finish	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	40
Package	Small Outline No-lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Thailand

Where can I find the MCP1661T-E/MNY datasheet?

MCP1661T-E/MNY Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP1661T-E/MNY?

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

Frequently Asked Questions

What input voltage range does MCP1661T-E/MNY support, and can it operate from a single-cell lithium-ion battery?

MCP1661T-E/MNY accepts an input voltage from 2.4 V to 5.5 V, which covers the full discharge range of a single-cell lithium-ion battery (typically 3.0 V to 4.2 V). This allows portable devices to maintain a stable boosted output rail even as the battery voltage drops toward its 2.7 V cutoff, extending effective battery life.

How high an output voltage can MCP1661T-E/MNY produce, and what does that enable for LED string design?

MCP1661T-E/MNY can produce output voltages up to 32 V, which is sufficient to drive series strings of 6 to 8 white LEDs with a forward voltage of approximately 3.5 V each. This simplifies LED driver design by eliminating parallel current-sharing branches and improving efficiency in compact backlight modules.

What thermal advantages does the TDFN-8 package provide for MCP1661T-E/MNY in high-current LED driver applications?

The TDFN-8 package features an exposed thermal pad on the bottom that transfers heat directly to a PCB copper pour, significantly reducing junction-to-board thermal resistance compared to a standard SOIC-8. For LED driver applications where MCP1661T-E/MNY switches at high duty cycles, this thermal path helps maintain junction temperatures below 125°C maximum and ensures reliable long-term operation.

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Reference Price (USD)

From $0.5761

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Qty.	Unit Price	Ext. Price
1+	$1.2600	$1.26
25+	$1.0600	$26.50
100+	$0.9700	$97.00
250+	$0.5957	$148.93
500+	$0.5859	$292.95
1000+	$0.5761	$576.10

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Unit price: $1.2600 · Total: $1.26

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP1661T-E/MNY Microchip Integrated Circuit (Small Outline No-lead) In Stock

What are the key features of MCP1661T-E/MNY?

What is MCP1661T-E/MNY used for?

What are the specifications of MCP1661T-E/MNY?

Compliance & Regulatory

Where can I find the MCP1661T-E/MNY datasheet?

What are equivalent replacements for MCP1661T-E/MNY?

Frequently Asked Questions

What input voltage range does MCP1661T-E/MNY support, and can it operate from a single-cell lithium-ion battery?

How high an output voltage can MCP1661T-E/MNY produce, and what does that enable for LED string design?

What thermal advantages does the TDFN-8 package provide for MCP1661T-E/MNY in high-current LED driver applications?

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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