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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
Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | Order from Distributors | Order from ST |
|---|---|---|---|---|---|---|---|---|---|
| ST1S32PUR | DFN8 4x4 | Tape And Reel |
Active
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0.673 | 10000 | EAR99 | MALAYSIA | Check Availability | Get sample |
(*) 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
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Picture Part number Manufacturer Description 
STEVAL-ISA068V1 -- 4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package Part Number4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ST1S32PUR |
Active
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DFN8 4x4 | Industrial | Ecopack2 |
ST1S32PUR
Package:
DFN8 4x4Material Declaration**:
PDF(**) 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.
