LTC3621IDCB-3.3#TRMPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock

Name: LTC3621IDCB-3.3#TRMPBF
Brand: Analog Devices
SKU: LTC3621IDCB-3.3#TRMPBF
Availability: InStock

The LTC3621IDCB-3.3#TRMPBF is a 3.3V, 1A synchronous step-down DC/DC converter from Analog Devices in a compact 6-pin DFN package. It operates from 2.7V to 17V input with current-mode burst-mode control for high efficiency at light loads. Available from stock worldwide with competitive pricing.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LTC3621IDCB-3.3#TRMPBFSmall Outline No-lead

Quick Facts

Manufacturer: Analog Devices
Package: Small Outline No-lead
Pin Count: 6
Lifecycle: ACTIVE
Datasheet: LTC3621IDCB-3.3#TRMPBF Datasheet PDF
Category: Integrated Circuit
Price: From $3.8800(MOQ 19)
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 LTC3621IDCB-3.3#TRMPBF?

Burst-mode current-mode control achieves high efficiency at light loads, extending battery life in portable applications
2.7V to 17V input range supports 5V USB, 12V power adapters, and lithium battery sources in a single design
Ultra-compact 6-pin DFN package minimizes board area for size-critical wearables, IoT nodes, and embedded modules

What is LTC3621IDCB-3.3#TRMPBF used for?

The LTC3621IDCB-3.3#TRMPBF is ideal for portable consumer electronics, IoT sensor nodes, and embedded computing modules that require a regulated 3.3V rail from Li-ion batteries, 5V USB, or 12V adapters. Its burst-mode operation at light loads makes it particularly effective in battery-powered designs where quiescent current must be minimized to maximize run time.

What are the specifications of LTC3621IDCB-3.3#TRMPBF?

Pbfree Code	No
Manufacturer Package Code	05-08-1715
YTEOL	10
Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE
Control Technique	BURST MODE
Input Voltage-Max	17V
Input Voltage-Min	2.7V
Input Voltage-Nom	12V
JESD-30 Code	R-PDSO-N6
JESD-609 Code	e3
Number of Functions	1
Output Current-Max	1A
Output Voltage-Max	17V
Output Voltage-Min	0.6V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOLCC6,.12,20
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Qualification Status	Not Qualified
Surface Mount	YES
Switcher Configuration	BUCK
Switching Frequency-Max	1160kHz
Technology	CMOS
Temperature Grade	AUTOMOTIVE
Terminal Finish	Matte Tin (Sn)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	DUAL
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

Where can I find the LTC3621IDCB-3.3#TRMPBF datasheet?

LTC3621IDCB-3.3#TRMPBF Datasheet Download

Official datasheet from Analog Devices

What are equivalent replacements for LTC3621IDCB-3.3#TRMPBF?

Compatible alternatives and drop-in replacements for LTC3621IDCB-3.3#TRMPBF:

BC501SM

suggested

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What input voltage range does the LTC3621IDCB-3.3#TRMPBF support, and which power sources is it compatible with?

The LTC3621IDCB-3.3#TRMPBF operates from an input voltage range of 2.7V to 17V, making it compatible with single-cell Li-ion batteries (3.0V to 4.2V), 5V USB power, and 12V wall adapters. This wide range allows a single PCB design to accommodate multiple power source options without component changes.

How does burst-mode control in LTC3621IDCB-3.3#TRMPBF improve battery life in IoT applications?

The LTC3621IDCB-3.3#TRMPBF uses current-mode burst-mode control that automatically reduces switching frequency at light loads, dramatically cutting switching losses and quiescent current draw. In IoT sensor nodes that spend most of their time in sleep mode drawing only a few milliamps, burst-mode operation can extend battery life by 30% or more compared to fixed-frequency regulators running continuously at full frequency.

What package does LTC3621IDCB-3.3#TRMPBF use, and how does it affect PCB layout?

The LTC3621IDCB-3.3#TRMPBF comes in a 6-pin DFN (Dual Flat No-lead) package, which measures approximately 2x2 mm with an exposed pad for thermal dissipation. This small footprint allows the complete 3.3V/1A power supply, including inductor and capacitors, to fit within a 100 mm² area, enabling compact layouts for wearables and miniaturized embedded modules.

When would LTC3621IDCB-3.3#TRMPBF be chosen over a linear LDO regulator for a 3.3V rail?

The LTC3621IDCB-3.3#TRMPBF is preferred over an LDO when input voltage is significantly higher than 3.3V, such as from a 12V rail, because its synchronous buck topology achieves efficiencies above 90% versus an LDO's potentially low efficiency of only 27% at that ratio. For 1A loads from a 12V input, switching to LTC3621IDCB-3.3#TRMPBF reduces power dissipation from approximately 8.7W (LDO) to under 0.9W, preventing thermal issues and reducing heatsinking requirements.

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About Analog Devices

Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.

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AvailabilityIn Stock

Reference Price (USD)

From $3.8800

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
19+	$5.1400	$97.66
250+	$4.2257	$1056.43
500+	$4.2125	$2106.25
1000+	$3.8800	$3880.00

pcs

Unit price: $5.1400 · Total: $97.66

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LTC3621IDCB-3.3#TRMPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock

What are the key features of LTC3621IDCB-3.3#TRMPBF?

What is LTC3621IDCB-3.3#TRMPBF used for?

What are the specifications of LTC3621IDCB-3.3#TRMPBF?

Compliance & Regulatory

Where can I find the LTC3621IDCB-3.3#TRMPBF datasheet?

What are equivalent replacements for LTC3621IDCB-3.3#TRMPBF?

Frequently Asked Questions

What input voltage range does the LTC3621IDCB-3.3#TRMPBF support, and which power sources is it compatible with?

How does burst-mode control in LTC3621IDCB-3.3#TRMPBF improve battery life in IoT applications?

What package does LTC3621IDCB-3.3#TRMPBF use, and how does it affect PCB layout?

When would LTC3621IDCB-3.3#TRMPBF be chosen over a linear LDO regulator for a 3.3V rail?

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