LTC3531EDD-3.3#PBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock

Name: LTC3531EDD-3.3#PBF
Brand: Analog Devices
SKU: LTC3531EDD-3.3#PBF
Availability: InStock

Analog Devices LTC3531EDD-3.3#PBF is a 200mA synchronous buck-boost DC/DC converter with 1.8V to 5.5V input range, fixed 3.3V output, and compact 3x3 DFN-8 package for space-constrained portable applications.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LTC3531EDD-3.3#PBFSmall Outline No-lead

Quick Facts

Manufacturer: Analog Devices
Package: Small Outline No-lead
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: LTC3531EDD-3.3#PBF Datasheet PDF
Category: Integrated Circuit
Price: From $2.7100(MOQ 3)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LTC3531EDD-3.3#PBF?

200mA synchronous buck-boost topology maintains regulated 3.3V output across 1.8V–5.5V input range, including through-the-rail transitions
Ultralow quiescent current extends battery life in portable IoT and wearable designs
Compact 3×3 mm DFN-8 package enables tight PCB layouts in handheld and space-constrained applications
Fixed 3.3V output simplifies BOM and eliminates external feedback resistors

What is LTC3531EDD-3.3#PBF used for?

The LTC3531EDD-3.3#PBF is well suited for battery-powered portable devices such as smartphones, wearables, and IoT sensor nodes that require a stable 3.3V rail from a Li-Ion or AA cell. Its buck-boost operation ensures regulation when the battery voltage is above, equal to, or below the 3.3V output, making it ideal for designs that must operate across the full discharge curve of a 1-cell lithium battery.

What are the specifications of LTC3531EDD-3.3#PBF?

Pbfree Code	No
Manufacturer Package Code	05-08-1698
YTEOL	10
Analog IC - Other Type	SWITCHING REGULATOR
Input Voltage-Max	5.5V
Input Voltage-Min	1.8V
Input Voltage-Nom	3.6V
JESD-30 Code	S-PDSO-N8
JESD-609 Code	e3
Number of Functions	1
Output Current-Max	0.46A
Package Body Material	PLASTIC/EPOXY
Package Shape	SQUARE
Package Style	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Surface Mount	YES
Switcher Configuration	BUCK-BOOST
Technology	CMOS
Temperature Grade	COMMERCIAL
Terminal Finish	Matte Tin (Sn) - annealed
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	30
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	Malaysia

Where can I find the LTC3531EDD-3.3#PBF datasheet?

LTC3531EDD-3.3#PBF Datasheet Download

Official datasheet from Analog Devices

What are equivalent replacements for LTC3531EDD-3.3#PBF?

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

Frequently Asked Questions

What input voltage range does the LTC3531EDD-3.3#PBF support, and why does that matter for battery-powered designs?

The LTC3531EDD-3.3#PBF accepts inputs from 1.8V to 5.5V, covering the full discharge range of a single-cell Li-Ion battery (4.2V down to ~2.5V) as well as two-AA-cell packs. Its synchronous buck-boost topology keeps the 3.3V output regulated even when VIN equals VOUT, eliminating dropouts during the mid-battery phase.

How much output current can the LTC3531EDD-3.3#PBF deliver, and what applications benefit from this current level?

The converter delivers up to 200mA of continuous output current at 3.3V, which is sufficient to power microcontrollers, Bluetooth Low Energy SoCs, small OLED displays, and sensor modules in portable consumer electronics and industrial handheld instruments.

What are the key package dimensions of the LTC3531EDD-3.3#PBF, and how does its footprint compare to larger SOIC alternatives?

The LTC3531EDD-3.3#PBF is housed in a 3×3 mm DFN-8 package with an exposed pad for thermal and ground connections, significantly smaller than a standard 8-pin SOIC footprint of approximately 5×4 mm, saving over 50% board area in wearable PCB layouts.

When is the LTC3531EDD-3.3#PBF preferred over a simple LDO regulator in a 3.3V power rail design?

Unlike an LDO, the LTC3531EDD-3.3#PBF maintains 3.3V output even when the input voltage drops below 3.3V, for example below 3.0V on an aging Li-Ion cell, because its buck-boost topology operates across the full 1.8V–5.5V input range.

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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 $2.7100

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
3+	$4.0100	$12.03
19+	$3.5900	$68.21
121+	$3.2100	$388.41
1000+	$2.7100	$2710.00

pcs

Unit price: $4.0100 · Total: $12.03

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Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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Procurement Manager, VoltEdge Energy, India

LTC3531EDD-3.3#PBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock

What are the key features of LTC3531EDD-3.3#PBF?

What is LTC3531EDD-3.3#PBF used for?

What are the specifications of LTC3531EDD-3.3#PBF?

Compliance & Regulatory

Where can I find the LTC3531EDD-3.3#PBF datasheet?

What are equivalent replacements for LTC3531EDD-3.3#PBF?

Frequently Asked Questions

What input voltage range does the LTC3531EDD-3.3#PBF support, and why does that matter for battery-powered designs?

How much output current can the LTC3531EDD-3.3#PBF deliver, and what applications benefit from this current level?

What are the key package dimensions of the LTC3531EDD-3.3#PBF, and how does its footprint compare to larger SOIC alternatives?

When is the LTC3531EDD-3.3#PBF preferred over a simple LDO regulator in a 3.3V power rail design?

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