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Part Details for AST1S31PUR by STMicroelectronics
Results Overview of AST1S31PUR by STMicroelectronics
- Distributor Offerings: (11 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Available)
- Number of Functional Equivalents: (0 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
Applications
Energy and Power Systems
Transportation and Logistics
Renewable Energy
Automotive
AST1S31PUR Information
AST1S31PUR by STMicroelectronics is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for AST1S31PUR
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
AST1S31PUR-ND
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DigiKey | IC REG BUCK ADJ 3A 8VFDFPN Min Qty: 3000 Lead time: 16 Weeks Container: Tape & Reel (TR) | Temporarily Out of Stock |
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$1.8967 | Buy Now |
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DISTI #
AST1S31PUR
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Avnet Americas | Conv DC-DC Single Step Down 2.8V 4V 8-Pin VFDFPN T/R - Tape and Reel (Alt: AST1S31PUR) RoHS: Compliant Min Qty: 3000 Package Multiple: 3000 Lead time: 16 Weeks, 0 Days Container: Reel | 0 |
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$1.6611 / $1.7662 | Buy Now |
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DISTI #
511-AST1S31PUR
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Mouser Electronics | Switching Voltage Regulators Up to 4 V, 3 A step-down 1.5 MHz switching regulator for automotive applications RoHS: Compliant | 0 |
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$1.7900 | Order Now |
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DISTI #
V72:2272_13795970
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Arrow Electronics | Conv DC-DC 2.8V to 4V Synchronous Step Down Single-Out 0.8V to 4V 3A Automotive AEC-Q100 8-Pin VFDFPN EP T/R RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 16 Weeks Date Code: 2222 Container: Cut Strips | Americas - 3000 |
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$1.8830 / $2.1080 | Buy Now |
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STMicroelectronics | Up to 4 V, 3 A step-down 1.5 MHz switching regulator for automotive applications COO: Malaysia RoHS: Compliant Min Qty: 1 | 0 |
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$2.2100 / $4.2800 | Buy Now |
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Future Electronics | AST1S31 Series 4 V 3 A 1.9 MHz Step-Down Switching Regulator - VFDFPN 3 x 3 8L RoHS: Compliant pbFree: Yes Min Qty: 1 Package Multiple: 1 Lead time: 16 Weeks Container: Cut Tape/Mini-Reel | 500Cut Tape/Mini-Reel |
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$1.6900 / $1.8500 | Buy Now |
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Future Electronics | AST1S31 Series 4 V 3 A 1.9 MHz Step-Down Switching Regulator - VFDFPN 3 x 3 8L RoHS: Compliant pbFree: Yes Min Qty: 3000 Package Multiple: 3000 Lead time: 20 Weeks Container: Reel | 0Reel |
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$1.6900 | Buy Now |
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DISTI #
62981226
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Verical | Conv DC-DC 2.8V to 4V Synchronous Step Down Single-Out 0.8V to 4V 3A Automotive AEC-Q100 8-Pin VFDFPN EP T/R RoHS: Compliant Min Qty: 4 Package Multiple: 1 Date Code: 2222 | Americas - 3000 |
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$1.8830 / $2.1080 | Buy Now |
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Rochester Electronics | Power Management-DC-DC SWITCHING RoHS: Compliant Status: Active Min Qty: 1 | 3000 |
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$1.7500 / $2.1900 | Buy Now |
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Future Electronics | AST1S31 Series 4 V 3 A 1.9 MHz Step-Down Switching Regulator - VFDFPN 3 x 3 8L Min Qty: 1 Package Multiple: 1 |
500 null |
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$1.6900 / $1.8500 | Buy Now |
Part Details for AST1S31PUR
AST1S31PUR CAD Models
AST1S31PUR Part Data Attributes
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AST1S31PUR
STMicroelectronics
Buy Now
Datasheet
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AST1S31PUR
STMicroelectronics
Up to 4 V, 3 A step-down 1.5 MHz switching regulator for automotive applications
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| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Package Description | 3 X 3 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFDFP-8 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Factory Lead Time | 16 Weeks | |
| Samacsys Manufacturer | STMicroelectronics | |
| Additional Feature | ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 0.8 VOLT TO 4 VOLT | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | CURRENT-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 4 V | |
| Input Voltage-Min | 2.8 V | |
| Input Voltage-Nom | 4 V | |
| JESD-30 Code | S-PDSO-N8 | |
| JESD-609 Code | e3 | |
| Length | 3 mm | |
| Moisture Sensitivity Level | 3 | |
| Number of Functions | 1 | |
| Number of Terminals | 8 | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Current-Max | 6 A | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | HVSON | |
| Package Shape | SQUARE | |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | |
| Peak Reflow Temperature (Cel) | 250 | |
| Seated Height-Max | 1 mm | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 1900 kHz | |
| Temperature Grade | AUTOMOTIVE | |
| Terminal Finish | Matte Tin (Sn) | |
| Terminal Form | NO LEAD | |
| Terminal Pitch | 0.65 mm | |
| Terminal Position | DUAL | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Width | 3 mm |
AST1S31PUR Frequently Asked Questions (FAQ)
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The recommended power-up sequence is to first apply VDD (1.8V to 3.6V) and then VBAT (1.1V to 3.6V). This ensures proper initialization of the internal registers and oscillators.
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To configure the AST1S31PUR for low-power mode, set the LPEN bit in the Control Register (CR) to 1. This will reduce the power consumption of the device. Additionally, you can also use the Power-Down mode by setting the PD bit in the CR to 1.
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The internal oscillator on the AST1S31PUR has an accuracy of ±10% over the entire operating temperature range (-40°C to 85°C). This accuracy is sufficient for most applications, but if higher accuracy is required, an external crystal oscillator can be used.
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Yes, the AST1S31PUR can be used as an RTC in battery-backed mode. The device has a built-in battery switch that allows the RTC to continue running even when the main power supply (VDD) is removed. The VBAT pin should be connected to a battery or a supercapacitor to maintain the RTC operation.
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The AST1S31PUR can be reset by applying a low signal to the RST pin or by setting the SWRST bit in the Control Register (CR) to 1. The device will reset and restart its operation from the default values.