LT8640EUDC#TRPBF vs LT8645SHV-2#PBF 对比
详细并排对比 LT8640EUDC#TRPBF 出自 Analog Devices 和 LT8645SHV-2#PBF 出自 Analog Devices。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。
规格对比
| 参数 | LT8640EUDC#TRPBF | LT8645SHV-2#PBF |
|---|---|---|
| 品牌 | Analog Devices | Analog Devices |
| 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） | $5.48 | $8.10 |
| 拓扑 | Synchronous Buck (Step-Down) | Synchronous Step-Down (Buck) |
| 输入电压范围 | 3.4 V to 42 V | 3.4 V to 65 V |
| 输出电压范围 | 0.97 V to 41.58 V (adjustable) | 0.97 V to 65 V (adjustable) |
| 最大输出电流 | 5 A | 8 A |
| 输出数量 | 1 | 1 |
| 开关频率 | Up to 3 MHz (programmable) | Up to 2.2 MHz |
| 静态电流 | 2.5 µA (output in regulation, Burst Mode) | 2.5 µA (Burst Mode) |
| Minimum Switch On-Time | 30 ns (top switch) | — |
| Architecture | Silent Switcher (low EMI) | Silent Switcher 2nd generation |
| Mode Selection | Burst Mode / Spread Spectrum / External Sync / Pulse-Skipping / Forced Continuous | — |
| 工作结温 | -40 °C to +125 °C (E grade, design assured over -40 to +125) | -40 °C to +150 °C (HV grade) |
| 封装 | 20-WFQFN / 18-lead QFN with Exposed Pad (LGA-style UD package) | 32-pin LQFN Exposed Pad |
| 安装类型 | Surface Mount | Surface Mount |
| MSL 等级 | 1 | — |
| RoHS 状态 | Compliant (Pb-free) | Compliant |
| Output Polarity | Positive | — |
| Internal Switches | — | Yes (high-side and low-side MOSFETs) |
| Internal Bypass Capacitors | — | Yes (integrated) |
| Lead-Free | — | Yes (#PBF suffix) |