Overview
The NCV3011DTBR2G, produced by onsemi, is a synchronous PWM controller designed for high-efficiency voltage regulation. It operates as a 400 kHz, voltage-mode, pulse-width-modulated (PWM) synchronous buck converter, driving high-side and low-side N-channel power MOSFETs. This device is part of the NCP3011 and NCV3011 family, with the NCV prefix indicating it is suitable for automotive and other applications requiring site and change controls.
The NCV3011DTBR2G features an internal boost circuit, several protection mechanisms, and a Power Good (PG) open-drain output to flag out-of-regulation conditions. It includes an operational transconductance amplifier (OTA) for high-gain error signal processing and supports both Master and Slave synchronization modes.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 4.7 | - | 28 | V |
| Oscillator Frequency | 350 | 400 | 450 | kHz |
| Reference Voltage (VREF) | 1.14 | 1.25 | 1.35 | V |
| UVLO Rising Threshold | 3.8 | 4.3 | 4.7 | V |
| UVLO Falling Threshold | 3.6 | 4.0 | 4.3 | V |
| Power Good High Threshold | 0.72 | 0.89 | 1.06 | V |
| Power Good Low Threshold | 0.65 | 0.71 | 0.75 | V |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Maximum Junction Temperature | - | - | 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 Pin
- Enable/Disable Pin
- Input Undervoltage Lockout
- External Synchronization (Master/Slave Mode)
- Output Overvoltage and Undervoltage Protection
- Thermal Shutdown
- Integrated Gate Drivers and Internal Boost Circuit
- Pb-Free Device
Applications
- Set Top Box
- Power Modules
- ASIC / DSP Power Supply
- Automotive Systems (due to NCV prefix)
Q & A
- What is the input voltage range of the NCV3011DTBR2G?
The input voltage range is from 4.7 V to 28 V.
- What is the operating frequency of the NCV3011DTBR2G?
The device operates at a frequency of 400 kHz.
- What protection features does the NCV3011DTBR2G include?
The device includes input undervoltage lockout, output undervoltage, output overvoltage, current limit, short circuit protection, and thermal shutdown.
- What is the purpose of the Power Good (PG) pin?
The Power Good pin flags out-of-regulation conditions.
- Can the NCV3011DTBR2G be synchronized with an external clock?
Yes, the device can synchronize to an external clock signal in Slave mode or output a phase-shifted clock signal in Master mode.
- What is the reference voltage provided by the VREF pin?
The VREF pin provides a 1.25 V reference voltage.
- What is the maximum junction temperature of the NCV3011DTBR2G?
The maximum junction temperature is 150°C.
- What is the package type of the NCV3011DTBR2G?
The device is available in a 14-pin TSSOP package.
- Is the NCV3011DTBR2G suitable for automotive applications?
Yes, the NCV prefix indicates it is suitable for automotive and other applications requiring site and change controls.
- What is the purpose of the internal boost circuit?
The internal boost circuit provides supply voltage for the high-side MOSFET gate driver.
