Print Page
ST1S40IPUR
DC-DC Switching Buck (Step Down) Regulator, Adjustable, 4V-18Vin, 800mV-18Vout, 3Aout, VFQFPN-8
Image is for illustrative purposes only. Please refer to product description.
9,827 In Stock
Need more?
EXPRESS Delivery Next Business Day - arrives by 1PM*
Order before 6pm
FREE Standard Delivery
on orders £0.00 and over
Accurate delivery times will be calculated in Checkout
| Quantity | Price (ex VAT) |
|---|---|
| 100+ | £0.931 |
| 250+ | £0.915 |
| 500+ | £0.900 |
| 1000+ | £0.884 |
Price for:Each
Minimum: 100
Multiple: 1
£93.10 (ex VAT)
Line Note
Added to your Order Confirmation, Invoice, and Dispatch note for this order only.
This number will be added to the Order Confirmation, Invoice, Dispatch note, Web confirmation Email and Product Label.
Product Information
ManufacturerSTMICROELECTRONICS
Manufacturer Part NoST1S40IPUR
Order Code2311348RL
Technical Datasheet
Output TypeAdjustable
No. of Outputs1Outputs
TopologyBuck (Step Down)
Input Voltage Min4V
Input Voltage Max18V
Output Current3A
Max Output Current3A
IC Case / PackageVFQFPN
No. of Pins8Pins
IC MountingSurface Mount
Output Voltage - Nom-
Output Voltage Min800mV
Output Voltage Max18V
Switching Frequency Typ850kHz
Efficiency-
Operating Temperature Min-40°C
Operating Temperature Max150°C
Product Range-
Qualification-
SVHCNo SVHC (25-Jun-2025)
DC / DC Converter IC CaseVFQFPN
Automotive Qualification Standard-
Switching Frequency1MHz
Product Overview
The ST1S40IPUR is a DC step-down Switching Regulator with cycle-by-cycle current limiting. This device is an internally compensated 850kHz fixed-frequency PWM synchronous step-down regulator. This integrates a 95mΩ high side switch and 69mΩ 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.
- Internal soft-start
- All ceramic capacitor
- Current fold back short-circuit protection
Applications
Power Management
Technical Specifications
Output Type
Adjustable
Topology
Buck (Step Down)
Input Voltage Max
18V
Max Output Current
3A
No. of Pins
8Pins
Output Voltage - Nom
-
Output Voltage Max
18V
Efficiency
-
Operating Temperature Max
150°C
Qualification
-
SVHC
No SVHC (25-Jun-2025)
Automotive Qualification Standard
-
No. of Outputs
1Outputs
Input Voltage Min
4V
Output Current
3A
IC Case / Package
VFQFPN
IC Mounting
Surface Mount
Output Voltage Min
800mV
Switching Frequency Typ
850kHz
Operating Temperature Min
-40°C
Product Range
-
MSL
MSL 3 - 168 hours
DC / DC Converter IC Case
VFQFPN
Switching Frequency
1MHz
Technical Docs (3)
Associated Products
1 Product Found
Legislation and Environmental
Country of Origin:
Country in which last significant manufacturing process was carried outCountry of Origin:Malaysia
Country in which last significant manufacturing process was carried out
Country in which last significant manufacturing process was carried outCountry of Origin:Malaysia
Country in which last significant manufacturing process was carried out
Tariff No:85423990
US ECCN:EAR99
EU ECCN:NLR
RoHS Compliant:Yes
RoHS
RoHS Phthalates Compliant:Yes
RoHS
SVHC:No SVHC (25-Jun-2025)
Download Product Compliance Certificate
Product Compliance Certificate
Weight (kg):.000454
Product traceability