Overview
The NCP1593BMNTWG is a synchronous PWM (Pulse Width Modulation) converter produced by onsemi. It is designed to integrate all the necessary control and protection circuitry for a wide range of applications. This device employs current mode control, providing fast transient response, simple compensation, and excellent stability. The NCP1593BMNTWG features a fixed 1 MHz switching frequency, an internal soft-start, and very low shutdown current, making it suitable for high-efficiency power conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.0 - 5.5 | V |
| Output Voltage Range | 0.6 - Vin | V |
| Maximum Output Current | 3 | A |
| Switching Frequency | 1 MHz | |
| High-Side MOSFET RDS(on) | 90 mΩ | |
| Low-Side MOSFET RDS(on) | 60 mΩ | |
| Operating Ambient Temperature Range | -40 to +85 | °C |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Thermal Shutdown Threshold | 185 | °C |
Key Features
- Wide Input Voltage Range: 4.0 V to 5.5 V
- Internal 90 mΩ High-Side P-Channel MOSFET and 60 mΩ Low-Side N-Channel MOSFET
- Fixed 1 MHz Switching Frequency
- Cycle-by-Cycle Current Limiting
- Hiccup Mode Short-Circuit Protection
- Overtemperature Protection
- Internal Soft-Start
- Start-up with Pre-Biased Output Load
- Adjustable Output Voltage Down to 0.6 V
- Diode Emulation During Light Load
- 100% Duty Cycle Operation to Extend Battery Life
Applications
- Set-Top Boxes
- DVD Drives and HDD
- LCD Monitors and TVs
- Cable Modems
- USB Modems
- Telecom/Networking/Datacom Equipment
Q & A
- What is the input voltage range of the NCP1593BMNTWG?
The input voltage range is from 4.0 V to 5.5 V.
- What is the maximum output current of the NCP1593BMNTWG?
The maximum output current is 3 A.
- What is the switching frequency of the NCP1593BMNTWG?
The switching frequency is fixed at 1 MHz.
- What protection features does the NCP1593BMNTWG include?
The device includes cycle-by-cycle current limiting, hiccup mode short-circuit protection, overtemperature protection, and internal soft-start.
- How is the output voltage adjusted on the NCP1593BMNTWG?
The output voltage is set using a resistive voltage divider from the output voltage to the FB pin.
- What is the thermal shutdown threshold of the NCP1593BMNTWG?
The thermal shutdown threshold is 185°C.
- What is the operating ambient temperature range of the NCP1593BMNTWG?
The operating ambient temperature range is from -40°C to +85°C.
- Does the NCP1593BMNTWG support 100% duty cycle operation?
Yes, it supports 100% duty cycle operation to extend battery life.
- What type of MOSFETs are integrated into the NCP1593BMNTWG?
The device integrates a high-side P-channel MOSFET and a low-side N-channel MOSFET.
- Is the NCP1593BMNTWG Pb-free?
Yes, the NCP1593BMNTWG is a Pb-free device.
