Overview
The NCP308SN180T1G is a supervisory circuit IC from onsemi, designed to monitor system voltages and assert a RESET signal when the voltage drops below a specified threshold or when the Manual Reset input is driven low. This device is part of the NCP308 series, which offers a range of voltage threshold and reset delay time options, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.6 to 5.5 | V |
| Threshold Voltage (VIT) | 1.67 | V |
| Quiescent Current | 1.6 to 6.0 | μA |
| RESET Output Type | Active low open-drain | |
| Manual Reset Input (MR) | Internally tied to VDD by a 90 kΩ pull-up resistor | |
| Reset Delay Time | 20 ms to 10 s (programmable) | |
| Temperature Range | −40°C to +125°C | |
| Package Type | TSOP-6 | |
| ESD Rating (HBM) | ±2000 V |
Key Features
- Wide supply voltage range from 1.6 V to 5.5 V
- Very low quiescent current (1.6 μA to 6.0 μA)
- High threshold voltage accuracy (±0.31% typical)
- Manual Reset input (MR) with internal pull-up resistor
- Flexible delay time programmability (20 ms to 10 s)
- Open-drain RESET output (push-pull output available upon request)
- Small TSOP-6 and WDFN6 2 x 2 mm, Pb-free packages
- AEC-Q100 qualified and PPAP capable for automotive and other critical applications
Applications
- DSP or Microcontroller Applications
- Notebook/Desktop Computers
- PDAs/Hand-Held Products
- Portable/Battery-Powered Products
- FPGA/ASIC Applications
Q & A
- What is the primary function of the NCP308SN180T1G?
The primary function is to monitor system voltages and assert a RESET signal when the voltage drops below the specified threshold or when the Manual Reset input is driven low. - What is the threshold voltage for the NCP308SN180T1G?
The threshold voltage (VIT) is 1.67 V. - What is the quiescent current of the NCP308SN180T1G?
The quiescent current ranges from 1.6 μA to 6.0 μA. - How is the reset delay time programmed?
The reset delay time can be programmed using the CT pin with various configurations, including fixed times or using an external capacitor. - What are the package options for the NCP308 series?
The NCP308 series is available in TSOP-6 and WDFN6 2 x 2 mm packages. - Is the NCP308SN180T1G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other critical applications. - What is the temperature range for the NCP308SN180T1G?
The operating temperature range is from −40°C to +125°C. - How does the Manual Reset input work?
The Manual Reset input (MR) is internally tied to VDD by a 90 kΩ pull-up resistor and asserts RESET when driven low. - What is the ESD rating for the NCP308SN180T1G?
The ESD rating is ±2000 V according to the Human Body Model (HBM). - What are some typical applications for the NCP308SN180T1G?
Typical applications include DSP or microcontroller applications, notebook/desktop computers, PDAs/hand-held products, portable/battery-powered products, and FPGA/ASIC applications.
