LT8645SHV-2#PBF vs LT8640IUDC-1#PBF 对比
详细并排对比 LT8645SHV-2#PBF 出自 Analog Devices 和 LT8640IUDC-1#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 | LT8645SHV-2#PBF | LT8640IUDC-1#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） | $8.10 | $5.10 |
| 拓扑 | Synchronous Step-Down (Buck) | Synchronous Buck (Step-Down) |
| 输入电压范围 | 3.4 V to 65 V | 3.4 V to 42 V |
| 输出电压范围 | 0.97 V to 65 V (adjustable) | 0.97 V to 41.58 V (adjustable) |
| 最大输出电流 | 8 A | 5 A |
| 输出数量 | 1 | — |
| 开关频率 | Up to 2.2 MHz | — |
| 静态电流 | 2.5 µA (Burst Mode) | — |
| Architecture | Silent Switcher 2nd generation | — |
| Internal Switches | Yes (high-side and low-side MOSFETs) | — |
| Internal Bypass Capacitors | Yes (integrated) | — |
| 工作结温 | -40 °C to +150 °C (HV grade) | — |
| 封装 | 32-pin LQFN Exposed Pad | 20-WFQFN, 18 leads, exposed pad (3 mm x 4 mm) |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | — |
| Lead-Free | Yes (#PBF suffix) | — |
| Switching Frequency Range | — | 200 kHz to 3 MHz |
| Minimum Top Switch On-Time | — | 30 ns |
| Quiescent Current (Burst Mode) | — | 2.5 uA |
| 工作温度范围 | — | -40C to +125C (TJ) |
| Mode (LT8640-1) | — | Forced Continuous PWM at light load |
| Mode Selection | — | Burst / Spread-Spectrum / SYNC / Forced-Continuous via SYNC/MODE pin |
| Efficiency (architectural claim) | — | Silent Switcher architecture, low-EMI |
| MSL 等级 | — | 1 (unlimited) |
| Lead-Free / RoHS | — | Yes (PBF suffix) |