ST1S41PUR vs L7985TR Comparison
Detailed side-by-side comparison of ST1S41PUR by STMicroelectronics and L7985TR by STMicroelectronics. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | ST1S41PUR | L7985TR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.92 | $1.10 |
| Topology | Synchronous Buck (Step-Down) DC-DC Converter | — |
| Input Voltage Range | 4.0 V to 18 V | 4.5 V to 38 V |
| Output Voltage Range | 0.8 V to VIN (adjustable) | 0.6 V to 38 V |
| Maximum Output Current | 4 A continuous | 2 A |
| Switching Frequency | 850 kHz nominal (700 kHz to 1 MHz adjustable) | 250 kHz |
| 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 | 2.5 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 | HSOP-8 |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 1 | — |
| RoHS Status | Compliant | Compliant |
| Output Type | — | Adjustable |
| Efficiency | — | >85% at full load |
| Internal Power MOSFET | — | Yes, 3A peak current |
| Control Architecture | — | Current-mode |
| Soft-Start | — | Built-in |
| Thermal Shutdown | — | Yes |
| Operating Temperature | — | -40°C to +150°C |