LT8646 vs LT8646SIV#WPBF 对比
详细并排对比 LT8646 出自 Analog Devices 和 LT8646SIV#WPBF 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 | LT8646 | LT8646SIV#WPBF |
|---|---|---|
| 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） | $5.18 | $6.20 |
| 拓扑 | Synchronous Step-Down (Buck) | Synchronous Step-Down (Buck) |
| 输入电压范围 | 3 V to 65 V (65 V abs max) | 3.4 V to 65 V |
| 输出电压范围 | 0.97 V to VIN (adjustable) | 0.97 V to 64 V (adjustable) |
| 最大输出电流 | 8 A continuous | 8 A |
| 静态电流 | 2.5 µA (typical at no load) | — |
| 开关频率 | 200 kHz to 3 MHz (programmable, synchronisable) | — |
| Architecture | Silent Switcher 2 with internal bypass capacitors | Silent Switcher 2 with integrated bypass capacitors |
| 效率 | >95 % at 12V to 3.3V/8A | — |
| Internal MOSFETs | Yes (high-side and low-side integrated) | Top + bottom N-channel MOSFET switches |
| Spread Spectrum | Yes (selectable) | — |
| 软启动 | Internal, programmable | — |
| Output Over-Voltage Protection | Yes (latch-off) | — |
| 热关断 | Yes | — |
| 工作结温 | -40 °C to +125 °C | — |
| 封装 | 32-TFQFN Exposed Pad (5 mm × 6 mm) | 32-pin LQFN (6 mm x 4 mm) with Exposed Pad |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | Compliant |
| Switching Frequency Range | — | 200 kHz to 2.2 MHz (programmable) |
| Quiescent Current (Burst Mode) | — | 2.5 µA typical |
| Peak Efficiency | — | 96% |
| 工作温度范围 | — | -40°C to +125°C (-IV suffix) |
| MSL 等级 | — | 3 (per JEDEC J-STD-020) |
| Automotive Qualification | — | AEC-Q100 (Automotive grade per Arrow listing) |
| Synchronization | — | External clock sync input |
| Power Good Flag | — | Yes |
| Thermal Resistance (θJA) | — | ~25°C/W on 4-layer JEDEC board (estimated from package family) |