Product overview
Description
The ST1S41 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN. The ST1S41 integrates 95 mΩ high-side switch and 69 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 ST1S41 is available in VFQFPN 4 mm x 4 mm 8-lead package and HSOP-8.
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All features
- 4 A output current
- 4.0 V to 18 V input voltage
- Output voltage adjustable from 0.8 V
- 850 kHz switching frequency
- Internal soft-start
- Integrated 95 mΩ and 69 mΩ power MOSFETs
- All ceramic capacitor
- Enable
- Cycle-by-cycle current limiting
- Current foldback short-circuit protection
- VFQFPN 4x4-8L and HSOP-8 packages
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All resources
| Resource title | Latest update |
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Product Specifications (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 06 Oct 2020 |
06 Oct 2020
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Technical Notes & Articles (1)
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| 20 Jan 2020 |
20 Jan 2020
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Brochures (1)
| Resource title | Latest update | |||
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| 23 Mar 2020 |
23 Mar 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - ST1S41
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Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ST1S41PHR |
Active
|
PowerSO-8 | Industrial | Ecopack2 | |
| ST1S41PUR |
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.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| ST1S41PUR | 3 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN8 4x4 | - | - | MALAYSIA | 0.788 / 1k | |
| ST1S41PHR | 3 distributors |
Active
|
EAR99 | NEC | Tape And Reel | PowerSO-8 | - | - | PHILIPPINES | 0.788 / 1k | ||
Marketing Status
ActiveECCN (US)
EAR99Budgetary Price (US$)*/Qty
0.788 / 1k(*) 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
