ST1S32PUR STMicroelectronics Integrated Circuit (Small Outline No-lead) In Stock
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.
- 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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| 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 |
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