ST1S32PUR STMicroelectronics Integrated Circuit (Small Outline No-lead) In Stock

Name: ST1S32PUR
Brand: STMicroelectronics
SKU: ST1S32PUR
Availability: InStock

ST1S32PUR is a current-mode PWM step-down switching regulator from STMicroelectronics with adjustable output voltage from 0.8 V to 5.5 V and input range of 2.8 V to 5.5 V in a compact 4x4 mm VFDFP-8 package. It delivers efficient power conversion for portable and IoT applications. Available from stock worldwide with fast shipping.

ACTIVEIntegrated CircuitVerified May 2026

Package / Visual Reference

ST1S32PURSmall Outline No-lead

Quick Facts

Manufacturer: STMicroelectronics
Package: Small Outline No-lead
Pin Count: 9
Lifecycle: ACTIVE
Datasheet: ST1S32PUR Datasheet PDF
Category: Integrated Circuit
Price: From $1.0155(MOQ 5)
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 ST1S32PUR?

Adjustable output voltage from 0.8 V to 5.5 V with current-mode PWM control for fast transient response
Wide input range 2.8 V to 5.5 V enabling operation directly from single-cell Li-Ion or USB 5 V rails
Ultra-compact 4 x 4 mm, 1 mm height VFDFP-8 package ideal for space-constrained portable and IoT designs

What is ST1S32PUR used for?

ST1S32PUR is suited for portable consumer electronics, IoT sensor nodes, and wearable devices requiring a compact, efficient step-down regulator from a single-cell Li-Ion battery or USB 5 V input. Its adjustable 0.8 V to 5.5 V output covers core logic voltages for application processors, microcontrollers, and RF transceivers. The current-mode PWM architecture ensures stable regulation under rapidly varying load conditions typical of wireless communication bursts.

What are the specifications of ST1S32PUR?

Factory Lead Time	18Weeks
YTEOL	7.3
Additional Feature	ADJUSTABLE OUTPUT VOLTAGE FROM 0.8 VOLT 5.5 VOLT
Analog IC - Other Type	SWITCHING REGULATOR
Control Mode	CURRENT-MODE
Control Technique	PULSE WIDTH MODULATION
Input Voltage-Max	5.5V
Input Voltage-Min	2.8V
Input Voltage-Nom	5V
JESD-30 Code	S-PDSO-N8
Number of Functions	1
Output Current-Max	4A
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOLCC8,.16,32
Package Shape	SQUARE
Package Style	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	NOT SPECIFIED
Qualification Status	Not Qualified
Surface Mount	YES
Switcher Configuration	BUCK
Switching Frequency-Max	1900kHz
Temperature Grade	AUTOMOTIVE
Terminal Form	NO LEAD
Terminal Pitch	0.8mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Package	Small Outline No-lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.60
Country of Origin	Malaysia

Where can I find the ST1S32PUR datasheet?

ST1S32PUR Datasheet Download

Official datasheet from STMicroelectronics

What are equivalent replacements for ST1S32PUR?

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

Frequently Asked Questions

What output voltage range does ST1S32PUR support and how is the output set in a circuit?

ST1S32PUR supports an adjustable output voltage range from 0.8 V to 5.5 V, set by an external resistor divider connected to the feedback pin. The current-mode PWM controller regulates to a 0.8 V reference, allowing designers to target popular logic voltages such as 1.2 V, 1.8 V, 3.3 V, or 5 V with standard 1% resistor values. The 2.8 V to 5.5 V input range accommodates single-cell Li-Ion batteries down to 2.8 V end-of-discharge.

For a wearable device powered by a Li-Ion cell, how does ST1S32PUR perform across the full battery discharge range of 2.8 V to 4.2 V?

The ST1S32PUR input range of 2.8 V to 5.5 V covers the full Li-Ion discharge window from 4.2 V fully charged to 2.8 V end-of-discharge without requiring a boost converter. Current-mode PWM control maintains stable 3.3 V or 1.8 V output regulation as input voltage drops, providing consistent power to microcontrollers and wireless modules across the entire 3.4 V span of the battery cycle.

How compact is the ST1S32PUR footprint compared to conventional step-down regulator packages?

ST1S32PUR uses a VFDFP-8 package measuring 4 mm x 4 mm with only 1 mm height, occupying 16 mm² of PCB area. Compared to a standard SO-8 package at roughly 5 mm x 4 mm or a TSSOP-8 at 3 mm x 4.4 mm, the VFDFP-8 offers a lower profile and similar or smaller footprint, making it one of the smallest 8-pin step-down regulator options for IoT and wearable designs requiring outputs from 0.8 V to 5.5 V.

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AvailabilityIn Stock

Reference Price (USD)

From $1.0155

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
5+	$2.3800	$11.90
25+	$2.2600	$56.50
50+	$2.1400	$107.00
250+	$1.0566	$264.15
500+	$1.0172	$508.60
1000+	$1.0155	$1015.46

pcs

Unit price: $2.3800 · Total: $11.90

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

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

Marco Rossi

CTO, AutoDrive Systems, Italy

ST1S32PUR STMicroelectronics Integrated Circuit (Small Outline No-lead) In Stock

What are the key features of ST1S32PUR?

What is ST1S32PUR used for?

What are the specifications of ST1S32PUR?

Compliance & Regulatory

Where can I find the ST1S32PUR datasheet?

What are equivalent replacements for ST1S32PUR?

Frequently Asked Questions

What output voltage range does ST1S32PUR support and how is the output set in a circuit?

For a wearable device powered by a Li-Ion cell, how does ST1S32PUR perform across the full battery discharge range of 2.8 V to 4.2 V?

How compact is the ST1S32PUR footprint compared to conventional step-down regulator packages?

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

Why Buy from FindMyChip

About STMicroelectronics

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