Overview
The NCP1597BMNTWG is a high-performance synchronous buck converter from onsemi, designed for efficient power management in various electronic devices. This converter integrates low-resistance, high-side P-channel MOSFETs and low-side N-channel MOSFETs, enabling it to regulate input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V. It can supply up to 2.0 A of output current, making it suitable for a range of applications requiring high current and efficiency.
The NCP1597BMNTWG operates at a fixed 1 MHz switching frequency and utilizes current mode control for fast transient response and excellent loop stability. It also supports Pulse Frequency Modulation (PFM) mode at light loads to enhance efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.0 V to 5.5 V |
| Output Voltage Range | 0.8 V to 4.95 V |
| Output Current | Up to 2.0 A |
| Switching Frequency | Fixed 1 MHz |
| MOSFETs | Internal 140mΩ / 90mΩ |
| Package Type | DFN-10 (3x3mm) |
| Efficiency | Up to 90% |
| Shutdown Supply Current | 1 µA maximum |
Key Features
- Fixed 1 MHz switching frequency for consistent performance.
- Internal soft-start to limit inrush currents during startup.
- Current mode control for fast transient response and excellent loop stability.
- Pulse Frequency Modulation (PFM) mode at light loads for higher efficiency.
- Cycle-by-cycle current limiting and hiccup mode short-circuit protection.
- Thermal shutdown protection to prevent overheating.
- Low-resistance, high-side P-channel and low-side N-channel MOSFETs integrated.
- Pin-to-pin compatibility with the 1.5A NCP1595A.
Applications
- USB Powered Devices
- Hard Disk Drive (HDD)
- DSP Power
- Set-Top-Box
Q & A
- What is the input voltage range of the NCP1597BMNTWG?
The input voltage range is from 4.0 V to 5.5 V.
- What is the maximum output current of the NCP1597BMNTWG?
The maximum output current is up to 2.0 A.
- What is the switching frequency of the NCP1597BMNTWG?
The switching frequency is fixed at 1 MHz.
- Does the NCP1597BMNTWG support PFM mode?
Yes, it supports Pulse Frequency Modulation (PFM) mode at light loads for higher efficiency.
- What type of MOSFETs are integrated in the NCP1597BMNTWG?
It integrates low-resistance, high-side P-channel and low-side N-channel MOSFETs.
- What is the package type of the NCP1597BMNTWG?
The package type is DFN-10 (3x3mm).
- Does the NCP1597BMNTWG have thermal shutdown protection?
Yes, it has thermal shutdown protection to prevent overheating.
- What is the shutdown supply current of the NCP1597BMNTWG?
The shutdown supply current is 1 µA maximum.
- Is the NCP1597BMNTWG pin-to-pin compatible with other models?
Yes, it is pin-to-pin compatible with the 1.5A NCP1595A.
- What are some common applications of the NCP1597BMNTWG?
Common applications include USB powered devices, hard disk drives (HDD), DSP power, and set-top-boxes.
