Overview
The NCP3020ADR2G, produced by onsemi, is a synchronous buck controller designed to operate within a wide input voltage range of 4.7 V to 28 V. This PWM device is capable of producing an output voltage as low as 0.6 V, making it versatile for various power conversion applications. The NCP3020 series includes integrated gate drivers and an internally set oscillator frequency of either 300 kHz (NCP3020A) or 600 kHz (NCP3020B). It also features an externally compensated transconductance error amplifier and several protection mechanisms such as input undervoltage lockout, output overvoltage and undervoltage protection, and short circuit protection. The device is available in a Pb-free SOIC-8 package, making it suitable for a range of electronic systems requiring efficient and reliable power management.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.7 | - | 28 | V |
| Oscillator Frequency (NCP3020A) | 240 | 300 | 360 | kHz |
| Oscillator Frequency (NCP3020B) | 530 | 600 | 670 | kHz |
| Internal Reference Voltage | 0.591 | 0.6 | 0.609 | V |
| VCC Supply Current (NCP3020A, VCC = 4.7 V) | 5.5 | 8.0 | - | mA |
| VCC Supply Current (NCP3020B, VCC = 4.7 V) | 5.9 | 10 | - | mA |
| UVLO Rising Threshold | 4.0 | 4.3 | 4.7 | V |
| UVLO Falling Threshold | 3.5 | 3.9 | 4.3 | V |
| Soft Start Ramp Time (NCP3020A) | - | - | 6.8 | ms |
| Soft Start Ramp Time (NCP3020B) | - | - | 4.4 | ms |
| Operating Junction Temperature Range | -40 | - | 140 | °C |
Key Features
- Input Voltage Range from 4.7 V to 28 V
- Internally set oscillator frequency: 300 kHz (NCP3020A) or 600 kHz (NCP3020B)
- 0.6 V Internal Reference Voltage
- Integrated gate drivers for high-side and low-side N-channel power MOSFETs
- Externally compensated transconductance error amplifier
- Internally programmed soft-start: 6.8 ms (NCP3020A) or 4.4 ms (NCP3020B)
- Protection features: input undervoltage lockout, output overvoltage and undervoltage protection, short circuit protection, and thermal shutdown
- Pb-free SOIC-8 package
- NCV prefix for automotive and other applications requiring site and change controls
Applications
The NCP3020ADR2G is suitable for a variety of power conversion applications, including but not limited to:
- DC-DC converters in industrial and automotive systems
- Power supplies for consumer electronics and computing devices
- Telecommunication equipment and networking devices
- Medical devices requiring high reliability and efficiency
- Other applications where efficient and reliable synchronous buck conversion is necessary
Q & A
- What is the input voltage range of the NCP3020ADR2G?
The input voltage range is from 4.7 V to 28 V.
- What are the oscillator frequencies for NCP3020A and NCP3020B?
The oscillator frequency for NCP3020A is 300 kHz, and for NCP3020B, it is 600 kHz.
- What is the internal reference voltage of the NCP3020?
The internal reference voltage is 0.6 V.
- What protection features are integrated into the NCP3020?
The device includes input undervoltage lockout, output overvoltage and undervoltage protection, short circuit protection, and thermal shutdown.
- What is the soft-start time for NCP3020A and NCP3020B?
The soft-start time for NCP3020A is 6.8 ms, and for NCP3020B, it is 4.4 ms.
- What is the operating junction temperature range of the NCP3020?
The operating junction temperature range is from -40°C to 140°C.
- What package type is the NCP3020ADR2G available in?
The device is available in a Pb-free SOIC-8 package.
- Is the NCP3020 suitable for automotive applications?
Yes, the NCV prefix versions are suitable for automotive and other applications requiring site and change controls.
- How does the NCP3020 sense inductor current?
The NCP3020 uses the voltage drop across the high-side MOSFET during the on time to sense inductor current.
- What is the maximum average current for the VCC, BST, HSDR, LSDR, VSW, and GND pins?
The maximum average current is 130 mA.
