Overview
The NCP81232MNTXG, produced by onsemi, is a dual-channel/multi-phase synchronous buck controller designed to provide advanced power management solutions. This controller supports various applications, particularly those requiring high efficiency and flexibility, such as telecom, server and storage systems, and multiple rail systems. It integrates with DrMOS (Driver-MOSFET) to offer comprehensive power stage configurations and robust protection mechanisms.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VIN) | 4.5 - 20 | V |
| Output Voltage Range (VOUT) | 0.6 - 5.3 | V |
| Switching Frequency Range (FSW) | 200 kHz - 1.2 MHz | |
| Integrated LDO Output Voltage | 5.2 - 5.5 | V |
| Power Stage Configurations | 1-2 Output Rails, 1-4 Phases | |
| Package Type | QFN-40, 5x5 mm, 0.4 mm Pitch | |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Thermal Shutdown Temperature | 150 | °C (typical) |
Key Features
- Dual-channel/multi-phase synchronous buck controller
- Flexible power stage configurations (1-2 output rails, 1-4 phases)
- Differential voltage and current sense
- Flexible power sequence programming
- Comprehensive protections including over-current, under-voltage, over-voltage, and over-temperature protection
- Programmable soft start and delay time
- Integrated 5.35 V LDO
- PWM output compatible with 3.3 V and 5 V DrMOS
- DDR power mode option and interleaved operation
- 2 Power Good Indicators and Comprehensive Fault Indicator
- Externally programmable hiccup over current protection and hiccup under voltage protection
Applications
- Telecom applications
- Server and storage systems
- Multiple rail systems
- DDR applications
Q & A
- What is the input voltage range of the NCP81232MNTXG?
The input voltage range is 4.5 V to 20 V.
- What are the possible power stage configurations for the NCP81232MNTXG?
The controller supports 1-2 output rails with 1-4 phases.
- What is the switching frequency range of the NCP81232MNTXG?
The switching frequency range is from 200 kHz to 1.2 MHz.
- Does the NCP81232MNTXG have integrated voltage regulation?
Yes, it has an integrated 5.35 V LDO.
- What types of protections are included in the NCP81232MNTXG?
The controller includes over-current, under-voltage, over-voltage, and over-temperature protections.
- Can the soft start and delay times be programmed externally?
Yes, the soft start and delay times can be programmed externally.
- What is the package type of the NCP81232MNTXG?
The package type is QFN-40, 5x5 mm, with a 0.4 mm pitch.
- What are the typical applications for the NCP81232MNTXG?
Typical applications include telecom, server and storage systems, multiple rail systems, and DDR applications.
- Does the NCP81232MNTXG support DDR power mode?
Yes, it supports DDR power mode and interleaved operation.
- How many Power Good Indicators does the NCP81232MNTXG have?
The controller has 2 Power Good Indicators.
