ST1S40PUR vs ST1S41PUR Comparison
Detailed side-by-side comparison of ST1S40PUR by STMicroelectronics and ST1S41PUR by STMicroelectronics. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
STMicroelectronics
ST1S40PUR - 3A, 4V to 18V Step-Down Converter | STMicroelectronics
ST1S40PUR ✓ Active
Specification Comparison
| Parameter | ST1S40PUR | ST1S41PUR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.72 | $0.92 |
| Output Type | Adjustable | — |
| Output Voltage Range | 0.8 V to VIN | 0.8 V to VIN (adjustable) |
| Maximum Output Current | 3 A | 4 A continuous |
| Input Voltage Range | 4 V to 18 V | 4.0 V to 18 V |
| Switching Frequency | 1.5 MHz | 850 kHz nominal (700 kHz to 1 MHz adjustable) |
| Efficiency | 90% (typical) | — |
| Quiescent Current | 1.5 mA | 1.5 mA typical |
| Shutdown Current | 1 uA (max) | — |
| Thermal Resistance | 45 C/W | — |
| Operating Temperature | -40C to +150C | — |
| Package | DFN6 (3x3 mm) | VFQFPN-8 (3x3 mm) with exposed thermal pad |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 1 (unlimited) | 1 |
| RoHS Status | Compliant | Compliant |
| Enable Pin | Yes (active-high) | — |
| Topology | — | Synchronous Buck (Step-Down) DC-DC Converter |
| High-Side Switch Rds(on) | — | 95 mΩ |
| Low-Side Switch Rds(on) | — | 69 mΩ (synchronous rectifier) |
| Control Method | — | Peak Current-Mode PWM with Internal Compensation |
| Peak Efficiency | — | Up to 90% |
| Soft-Start | — | Internal |
| Protection Features | — | Overcurrent, Thermal Shutdown, Cycle-by-Cycle Current Limit |
| Operating Temperature Range | — | -40 °C to +125 °C junction |