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.
Key Features
| Description | Version | Size |
|---|---|---|
| DS9248: 4 A step-down switching regulator | 2.0 | 1 MB |
| Description | Version | Size |
|---|---|---|
| Brochure Power management guide | 05.2016 | 4 MB |
| Part Number | Manufacturer | Description |
|---|---|---|
| STEVAL-ISA108V1 | 4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package |
| Part Number | Package | Packing Type | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|
| ST1S41PUR | VFDFPN 8 4x4x1.0 | Tape And Reel | 0.788 | 1000 | NEC | EAR99 | MALAYSIA |
| ST1S41PHR | PowerSO-8 | Tape And Reel | 0.788 | 1000 | NEC | EAR99 | PHILIPPINES |
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| ST1S41PUR | VFDFPN 8 4x4x1.0 | Industrial | Ecopack2 | md_qa-wspc-vfdfpn-wspc--wspc-4x4-wspc-x1.0-wspc-8l-wspc-pitch-wspc-0.65_my3i-wspc-ui64aa5.pdf md_qa-wspc-vfdfpn-wspc--wspc-4x4-wspc-x1.xml |
| ST1S41PHR | PowerSO-8 | Industrial | Ecopack2 | md_61-wspc-hsop-wspc-8l-wspc-.150_mb61ui64aa5-wspc-(st1s41phr)-wspc-wcp-wspc-ver2_signed.pdf md_61-wspc-hsop-wspc-8l-wspc-.150_mb61ui64aa5-wspc-(st1s41phr)-wspc-wcp-wspc-ver2.xml |
