UC3842BD1 vs NCP1294 Comparison
Detailed side-by-side comparison of UC3842BD1 by STMicroelectronics and NCP1294 by onsemi. 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 ✓ Active
Specification Comparison
| Parameter | UC3842BD1 | NCP1294 |
|---|---|---|
| Brand | STMicroelectronics | onsemi |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.15 | $0.81 |
| Input Voltage Range | 7.5 V to 30 V | — |
| Output Current (Peak) | 1 A | — |
| Oscillator Frequency (Max) | 500 kHz | — |
| Maximum Duty Cycle | 96% | Programmable / Accurate Clamp [DATA_NEEDED: nominal %] |
| Reference Output Voltage | 5 V | — |
| Reference Tolerance | ±2% | — |
| Error Amplifier Bandwidth | 1 MHz | — |
| Current Sense Threshold | 1 V | — |
| Startup Current | 0.5 mA | < 50 uA |
| 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 | — |
| Package | SOIC-8 | TSSOP-14 [DATA_NEEDED: verify pin count] |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| 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] |
| VCC Supply Voltage | — | [DATA_NEEDED: VCC range] |
| 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] |