NCP3063, NCP3063B, NCV3063 1.5 A, Step-Up/Down/ Inverting Switching Regulators is a switching power chip produced by Onsemi. It is mainly used for step-down, step-up and inverting applications.
The NCP3063 series is a higher‑frequency upgrade to the MC34063A/DC‑DC converters, offering step‑up, step‑down, and voltage‑inverting topologies with a minimum of external components. It integrates a temperature‑compensated reference, comparator, oscillator, current‑limit circuit, driver and a high‑current Darlington output switch.
Key features include operation up to 40 V input, low standby current, 1.5 A output switch current, adjustable output voltage, 150 kHz typical switching frequency, 1.5 % reference accuracy, internal thermal shutdown with hysteresis, and cycle‑by‑cycle current limiting. The datasheet details pin functions, maximum ratings, thermal characteristics, electrical parameters, and package dimensions for PDIP‑8, SOIC‑8, and DFN‑8 options.
| Input Voltage Range | 0 V to +40 V |
|---|---|
| Output Switch Current | 1.5 A |
| Typical Switching Frequency | 150 kHz |
| Reference Accuracy | ±1.5 % |
| Thermal Shutdown Threshold | 160 °C |
| Maximum Junction Temperature | +150 °C |
The device can handle up to 1.5 A through the output switch.
Thermal shutdown triggers at approximately 160 °C with a 10 °C hysteresis.