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4 A DC step-down switching regulator
Download Datasheet
The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S32 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.
The ST1S32 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier, allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The ST1S32 is available in 4 mm x 4 mm, 8-lead VFDFPN package.
Key Features
- 4 A DC output current
- 2.8 V to 5.5 V input voltage
- Output voltage adjustable from 0.8 V
- 1.5 MHz switching frequency
- Internal soft-start and enable
- Integrated 60 mΩ and 45 mΩ Power MOSFETs
- All ceramic capacitor
- Power Good (POR)
- Cycle-by-cycle current limiting
- Current foldback short-circuit protection
- VFDFPN 8 4x4x1.0 package
Resources
Technical Documentation
| Description | Version | Size | |
|---|---|---|---|
|
DS9063: 4 A DC step-down switching regulator | 1.0 | 803 KB |
Publications and Collaterals
| Description | Version | Size | |
|---|---|---|---|
|
|
Brochure Power management guide | 09.2017 | 3 MB |
|
|
Electric vehicle (EV) ecosystem | 1.1 | 1 MB |
Tools and Software
| Part Number | Manufacturer | Description |
|---|---|---|
| STEVAL-ISA068V1 | 4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package |
Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | Unit Price (US$) * | Quantity | ECCN (US) | Country of Origin | More info | Order from ST | Order from Distributors |
|---|---|---|---|---|---|---|---|---|---|---|
| ST1S32PUR | DFN8 4x4 | Tape And Reel | Active : Product is in volume production | 0.673 | 1000 | EAR99 | MALAYSIA | MORE INFO | Get Sample Add to cart | DISTRIBUTOR AVAILABILITY |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
Quality & Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ST1S32PUR | Active | DFN8 4x4 | Industrial | Ecopack2 |
|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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MORE INFO
No availability reported, please contact our Sales office
Active: In Production.
| Distributor Name | Region | Stock | Min. Order |
|---|
Distributor reported inventory date: