NCP1294 vs UC3842BD1 对比
详细并排对比 NCP1294 出自 onsemi 和 UC3842BD1 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
UC3842BD1 - Current Mode PWM Controller | STMicroelectronics | SMPS
UC3842BD1 ✓ 量产中规格对比
| 参数 | NCP1294 | UC3842BD1 |
|---|---|---|
| 品牌 | onsemi | 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） | $0.81 | $0.15 |
| Topology Supported | Flyback, Boost, Forward | — |
| Control Method | Fixed Frequency Feed Forward Voltage Mode PWM | — |
| 开关频率 | Programmable (up to 1 MHz typical) [DATA_NEEDED: exact max] | — |
| Startup Current | < 50 uA | 0.5 mA |
| VCC Supply Voltage | [DATA_NEEDED: VCC range] | — |
| Maximum Duty Cycle | Programmable / Accurate Clamp [DATA_NEEDED: nominal %] | 96% |
| 软启动 | Internal, programmable | — |
| 限流 | Cycle-by-cycle | — |
| Leading Edge Blanking | Yes (internal) | — |
| Undervoltage Protection (UVP) | Yes | — |
| Overvoltage Protection (OVP) | Yes | — |
| Output Driver | Totem pole (MOSFET gate drive) | — |
| 工作温度 | -40C to +125C [DATA_NEEDED: verified from datasheet] | — |
| 封装 | TSSOP-14 [DATA_NEEDED: verify pin count] | SOIC-8 |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | Compliant |
| 输入电压范围 | — | 7.5 V to 30 V |
| Output Current (Peak) | — | 1 A |
| Oscillator Frequency (Max) | — | 500 kHz |
| Reference Output Voltage | — | 5 V |
| Reference Tolerance | — | ±2% |
| Error Amplifier Bandwidth | — | 1 MHz |
| Current Sense Threshold | — | 1 V |
| Operating Supply Current | — | 11 mA |
| Under-Voltage Lockout (UVLO) On | — | 16 V |
| Under-Voltage Lockout (UVLO) Off | — | 10 V |
| 工作温度范围 | — | -40°C to +150°C |