NCP1294 vs UC3842BD1 Comparison
Detailed side-by-side comparison of NCP1294 by onsemi and UC3842BD1 by STMicroelectronics. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
STMicroelectronics
UC3842BD1 - Current Mode PWM Controller | STMicroelectronics | SMPS
UC3842BD1 ✓ ActiveSpecification Comparison
| Parameter | NCP1294 | UC3842BD1 |
|---|---|---|
| Brand | onsemi | STMicroelectronics |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.81 | $0.15 |
| Topology Supported | Flyback, Boost, Forward | — |
| Control Method | Fixed Frequency Feed Forward Voltage Mode PWM | — |
| Switching Frequency | 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% |
| Soft-Start | Internal, programmable | — |
| Current Limit | Cycle-by-cycle | — |
| Leading Edge Blanking | Yes (internal) | — |
| Undervoltage Protection (UVP) | Yes | — |
| Overvoltage Protection (OVP) | Yes | — |
| Output Driver | Totem pole (MOSFET gate drive) | — |
| Operating Temperature | -40C to +125C [DATA_NEEDED: verified from datasheet] | — |
| Package | TSSOP-14 [DATA_NEEDED: verify pin count] | SOIC-8 |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| Input Voltage Range | — | 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 |
| Operating Temperature Range | — | -40°C to +150°C |