ST1S41PHR
ActiveDC-DC SWITCHING BUCK (STEP DOWN) REGULATOR, ADJUSTABLE, 850KHZ, 4V-18VIN, 0.8V-18V/4A OUT, HSOP-8
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ST1S41PHR
ActiveDC-DC SWITCHING BUCK (STEP DOWN) REGULATOR, ADJUSTABLE, 850KHZ, 4V-18VIN, 0.8V-18V/4A OUT, HSOP-8
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Technical Specifications
Parameters and characteristics for this part
| Specification | ST1S41PHR |
|---|---|
| Current - Output | 4 A |
| Frequency - Switching | 850 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 3.9 mm |
| Supplier Device Package | 8-HSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 18 V |
| Voltage - Input (Min) [Min] | 4 V |
| Voltage - Output (Max) [Max] | 18 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.09 | |
| 10 | $ 1.88 | |||
| 25 | $ 1.77 | |||
| 100 | $ 1.51 | |||
| 250 | $ 1.42 | |||
| 500 | $ 1.24 | |||
| 1000 | $ 1.03 | |||
| Digi-Reel® | 1 | $ 2.09 | ||
| 10 | $ 1.88 | |||
| 25 | $ 1.77 | |||
| 100 | $ 1.51 | |||
| 250 | $ 1.42 | |||
| 500 | $ 1.24 | |||
| 1000 | $ 1.03 | |||
| Tape & Reel (TR) | 2500 | $ 0.96 | ||
| 5000 | $ 0.92 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 2.32 | |
| 10 | $ 1.71 | |||
| 25 | $ 1.67 | |||
| 50 | $ 1.62 | |||
| 100 | $ 1.58 | |||
| 250 | $ 1.51 | |||
| 500 | $ 1.48 | |||
| 1000 | $ 1.44 | |||
Description
General part information
ST1S41 Series
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.
Documents
Technical documentation and resources