Overview
The NCP3011DTBR2G, produced by onsemi, is a synchronous PWM controller designed for high-efficiency voltage regulation. This device operates as a 400 kHz, voltage-mode, pulse-width-modulated (PWM) synchronous buck converter, driving high-side and low-side N-channel power MOSFETs. It features an internal boost circuit, various protection mechanisms, and a Power Good output to indicate system regulation. The NCP3011 is available in a 14-pin TSSOP package and is suitable for a wide range of applications requiring robust and efficient power management.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.7 | - | 28 | V |
| Oscillator Frequency | 350 | 400 | 450 | kHz |
| Reference Voltage | 1.14 | 1.25 | 1.35 | V |
| Quiescent Supply Current (EN = 0, VCC = 12 V) | 2.5 | - | 4.0 | mA |
| UVLO Rising Threshold | 3.8 | 4.3 | 4.7 | V |
| UVLO Falling Threshold | 3.6 | 4.0 | 4.3 | V |
| Maximum Junction Temperature | - | - | 150 | °C |
| Storage Temperature Range | -55 | - | 150 | °C |
Key Features
- Input Voltage Range from 4.7 V to 28 V
- 400 kHz Operation
- 0.8 V ±1.0% Reference Voltage
- Buffered External +1.25 V Reference
- Current Limit and Short Circuit Protection
- Power Good Output
- Enable/Disable Pin
- Input Undervoltage Lockout
- External Synchronization (Master/Slave Mode)
- Output Overvoltage and Undervoltage Protection
- Thermal Shutdown
- Dual Function SYNC Pin for Master/Slave Operation
Applications
- Set Top Box
- Power Modules
- ASIC / DSP Power Supply
Q & A
- What is the input voltage range of the NCP3011?
The input voltage range of the NCP3011 is from 4.7 V to 28 V.
- What is the operating frequency of the NCP3011?
The NCP3011 operates at a frequency of 400 kHz.
- What is the reference voltage provided by the NCP3011?
The NCP3011 provides a 1.25 V reference voltage with ±1.0% accuracy.
- Does the NCP3011 have built-in protection features?
Yes, the NCP3011 includes protection features such as current limit, short circuit protection, output overvoltage and undervoltage protection, and thermal shutdown.
- How does the SYNC pin function in the NCP3011?
The SYNC pin can either synchronize the device to an external clock signal (Slave Mode) or output a 180° phase-shifted clock signal to drive another NCP3011 (Master Mode).
- What is the purpose of the Power Good output in the NCP3011?
The Power Good output is an open-drain signal that indicates when the system is in regulation.
- What package type is the NCP3011 available in?
The NCP3011 is available in a 14-pin TSSOP package.
- Does the NCP3011 support soft-start functionality?
Yes, the NCP3011 includes a closed-loop soft-start feature that begins after a 400 μs delay.
- What is the maximum junction temperature for the NCP3011?
The maximum junction temperature for the NCP3011 is 150°C.
- Is the NCP3011 suitable for automotive applications?
Yes, the NCV prefix version of the NCP3011 is suitable for automotive and other applications requiring site and change controls.
