Overview
The NCP5030MTTXG, produced by onsemi, is a fixed frequency PWM buck-boost converter designed for constant current applications, particularly for driving high-powered white LEDs. This device is optimized for use in portable applications, such as flashlights and torches, and operates efficiently with a single Li-Ion or three Alkaline batteries. The NCP5030 features an adaptive architecture that switches between boost, buck-boost, and buck modes based on the input and output voltage conditions, ensuring high efficiency across various operating scenarios.
Key Specifications
| Characteristic | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 - 5.5 | V |
| Output Voltage Range | 2.2 - 5.5 | V |
| Maximum Inductor Current | 4.0 A (typical) | A |
| Switching Frequency | 700 kHz (typical) | kHz |
| Efficiency | Up to 87% at 500 mA and 3.3 V VIN | % |
| Feedback Voltage Threshold | 200 mV (nominal) | mV |
| Operating Ambient Temperature Range | -40 to +85 °C | °C |
| Package Type | 3x4 mm WDFN | |
| Thermal Shutdown Protection | 160 °C (typical) | °C |
Key Features
- High efficiency up to 87% at 500 mA and 3.3 V VIN
- Internal synchronous rectifier, eliminating the need for external Schottky diodes
- Adjustable switching limit current to optimize inductor size
- 0.3 μA shutdown control with “True-Cut off”
- Output over-voltage and thermal shutdown protection
- Low feedback voltage of 200 mV to minimize power losses in the current setting resistor
- Support for PWM dimming with a frequency limit of 0.2 kHz
- Compact 3x4 mm thermally enhanced WDFN package
Applications
The NCP5030MTTXG is primarily used in portable lighting applications such as flashlights and torches. Its ability to operate efficiently with a single Li-Ion or three Alkaline batteries makes it an ideal choice for battery-powered LED lighting solutions.
Q & A
- What is the input voltage range of the NCP5030MTTXG?
The input voltage range is from 2.7 V to 5.5 V.
- What is the typical switching frequency of the NCP5030MTTXG?
The typical switching frequency is 700 kHz.
- What is the maximum inductor current for the NCP5030MTTXG?
The maximum inductor current is typically 4.0 A.
- What is the feedback voltage threshold for the NCP5030MTTXG?
The feedback voltage threshold is 200 mV (nominal).
- Does the NCP5030MTTXG have thermal shutdown protection?
Yes, it has thermal shutdown protection set at 160 °C (typical).
- What is the operating ambient temperature range for the NCP5030MTTXG?
The operating ambient temperature range is from -40 °C to +85 °C.
- What package type is the NCP5030MTTXG available in?
The NCP5030MTTXG is available in a 3x4 mm WDFN package.
- Can the NCP5030MTTXG be used for PWM dimming?
Yes, it supports PWM dimming with a frequency limit of 0.2 kHz.
- What are the key advantages of the internal synchronous rectifier in the NCP5030MTTXG?
The internal synchronous rectifier eliminates the need for external Schottky diodes, enhancing efficiency and reducing component count.
- How does the NCP5030MTTXG adjust the switching limit current?
The switching limit current can be adjusted using a resistor connected to the PCA input, allowing optimization of the inductor size based on application needs.
