ST1S40PUR vs ST1S41PUR 对比
详细并排对比 ST1S40PUR 出自 STMicroelectronics 和 ST1S41PUR 出自 STMicroelectronics。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
STMicroelectronics
ST1S40PUR - 3A, 4V to 18V Step-Down Converter | STMicroelectronics
ST1S40PUR ✓ 量产中
规格对比
| 参数 | ST1S40PUR | ST1S41PUR |
|---|---|---|
| 品牌 | STMicroelectronics | STMicroelectronics |
| 分类 | DC-DC Converters | DC-DC Converters |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.72 | $0.92 |
| 输出类型 | Adjustable | — |
| 输出电压范围 | 0.8 V to VIN | 0.8 V to VIN (adjustable) |
| 最大输出电流 | 3 A | 4 A continuous |
| 输入电压范围 | 4 V to 18 V | 4.0 V to 18 V |
| 开关频率 | 1.5 MHz | 850 kHz nominal (700 kHz to 1 MHz adjustable) |
| 效率 | 90% (typical) | — |
| 静态电流 | 1.5 mA | 1.5 mA typical |
| 关断电流 | 1 uA (max) | — |
| 热阻 | 45 C/W | — |
| 工作温度 | -40C to +150C | — |
| 封装 | DFN6 (3x3 mm) | VFQFPN-8 (3x3 mm) with exposed thermal pad |
| 安装类型 | Surface Mount | Surface Mount |
| MSL 等级 | 1 (unlimited) | 1 |
| RoHS 状态 | Compliant | Compliant |
| 使能引脚 | Yes (active-high) | — |
| 拓扑 | — | 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% |
| 软启动 | — | Internal |
| Protection Features | — | Overcurrent, Thermal Shutdown, Cycle-by-Cycle Current Limit |
| 工作温度范围 | — | -40 °C to +125 °C junction |