The AST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The AST1S31 device operates from 2.8 V to 4 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.
The AST1S31 integrates a 70 mΩ high-side switch and a 55 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with an internal compensation deliver a very compact solution with a minimum component count.
The AST1S31 device is available in a 3 x 3 mm, 8 leads VFDFPN package.
Key Features
| Description | Version | Size |
|---|---|---|
| DS10018: Up to 4 V, 3 A step-down 1.5 MHz switching regulator for automotive applications | 5.0 | 1 MB |
| Description | Version | Size |
|---|---|---|
| AST1S3x family Power optimization for postregulated automotive systems | 1.0 | 896 KB |
| Description | Version | Size |
|---|---|---|
| Brochure Power management guide | 05.2016 | 4 MB |
| Part Number | Package | Packing Type | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|
| AST1S31PUR | VFDFPN 8 3x3x1.0 | Tape And Reel | 1.258 | 1000 | NEC | EAR99 | MALAYSIA |
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| AST1S31PUR | VFDFPN 8 3x3x1.0 | Automotive | Ecopack2 | md_iy-wspc-powerso-10_amiyvn34dyx.pdf md_iy-wspc-powerso-10_amiyvn34dyx.xml |
