ST1S41PUR vs ST1S40PUR Comparison
Detailed side-by-side comparison of ST1S41PUR by STMicroelectronics and ST1S40PUR 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 ✓ ActiveSpecification Comparison
| Parameter | ST1S41PUR | ST1S40PUR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Topology | Synchronous Buck (Step-Down) DC-DC Converter | — |
| Input Voltage Range | 4.0 V to 18 V | 4 V to 18 V |
| Output Voltage Range | 0.8 V to VIN (adjustable) | 0.8 V to VIN |
| Maximum Output Current | 4 A continuous | 3 A |
| Switching Frequency | 850 kHz nominal (700 kHz to 1 MHz adjustable) | 1.5 MHz |
| 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% | — |
| Quiescent Current | 1.5 mA typical | 1.5 mA |
| Soft-Start | Internal | — |
| Protection Features | Overcurrent, Thermal Shutdown, Cycle-by-Cycle Current Limit | — |
| Operating Temperature Range | -40 °C to +125 °C junction | — |
| Package | VFQFPN-8 (3x3 mm) with exposed thermal pad | DFN6 (3x3 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 1 | 1 (unlimited) |
| RoHS Status | Compliant | Compliant |
| Output Type | — | Adjustable |
| Efficiency | — | 90% (typical) |
| Shutdown Current | — | 1 uA (max) |
| Thermal Resistance | — | 45 C/W |
| Operating Temperature | — | -40C to +150C |
| Enable Pin | — | Yes (active-high) |