The ST1S40 device is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S40 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 ST1S40 integrates a 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 ST1S40 is available in HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and standard SO8 package.
Key Features
| Description | Version | Size |
|---|---|---|
| DS6942: 3 A DC step-down switching regulator | 5.0 | 1 MB |
| Description | Version | Size |
|---|---|---|
| Brochure Power management guide | 05.2016 | 7 MB |
| Peripheral semiconductors for set-top box applications | 4.3 | 633 KB |
| 型号 | 制造商 | Description |
|---|---|---|
| STEVAL-ISA084V1 | 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 |
| 型号 | Package | Packing Type | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|
| ST1S40IPHR | PowerSO-8 | Tape And Reel | 0.76 | 1000 | NEC | EAR99 | PHILIPPINES |
| ST1S40IDR | SO-8 | Tape And Reel | 0.68 | 1000 | NEC | EAR99 | CHINA |
| ST1S40IPUR | VFDFPN 8 4x4x1.0 | Tape And Reel | 0.798 | 1000 | NEC | EAR99 | MALAYSIA |
| 型号 | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| ST1S40IPHR | PowerSO-8 | Industrial | Ecopack2 | md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch_hb61-wspc-ua27db5.pdf md_61-wspc-hsop-wspc-8l-wspc-.xml |
| ST1S40IDR | SO-8 | Industrial | Ecopack2 | md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_pzo7-wspc-ua27ddf_vers2_signed.pdf md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_pzo7-wspc-ua27ddf.xml |
| ST1S40IPUR | VFDFPN 8 4x4x1.0 | Industrial | Ecopack2 |
