Overview
The NCV308SN180T1G is a supervisory circuit IC from ON Semiconductor, designed to monitor system voltages and assert a RESET signal when the monitored voltage drops below a specified threshold. This device is part of the NCV308 series, which is optimized for a wide range of applications, including DSP, microcontroller, and FPGA/ASIC systems. It features a low quiescent current, high threshold voltage accuracy, and flexible delay time programmability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Operating Voltage Range (VDD) | 1.6 | 5.5 | V | |
| Minimum VDD Guaranteed RESET Output Valid | 0.5 | 0.8 | V | |
| Supply Current (IDD) at VDD = 3.3V, RESET not asserted | 1.6 | 5.0 | μA | |
| Low-level output voltage of RESET (VOL) | 0.3 | 0.4 | V | |
| Negative going SENSE threshold voltage accuracy (VIT%) | -2.8 | -1.5 to +1.5 | +2.8 | % |
| Hysteresis on VIT (VHYS) | 1.75 | 3.75 | %VIT | |
| Reset Delay Time (tD) | 20 ms | 10 s | ||
| Temperature Range | -40°C | +125°C | °C | |
| Package | TSOP-6 Pb-Free |
Key Features
- Wide Supply Voltage Range: 1.6 V to 5.5 V
- Very Low Quiescent Current: 1.6 μA
- Fixed Threshold Voltage Versions for Standard Voltage Rails (e.g., 1.8 V, 3.3 V, 5.0 V)
- Adjustable Version with Low Threshold Voltage: 0.405 V (min)
- High Threshold Voltage Accuracy: 0.15% typ
- Manual Reset Input (MR)
- Open-Drain RESET Output (Push-pull Output upon Request)
- Flexible Delay Time Programmability: 1.25 ms to 10 s
- AEC-Q100 Grade 1 Qualified and PPAP Capable
- Pb-Free Devices
Applications
- DSP or Microcontroller Applications
- Notebook/Desktop Computers
- PDAs/Hand-Held Products
- Portable/Battery-Powered Products
- FPGA/ASIC Applications
Q & A
- What is the supply voltage range of the NCV308SN180T1G?
The supply voltage range is from 1.6 V to 5.5 V.
- What is the quiescent current of the NCV308SN180T1G?
The quiescent current is very low, typically 1.6 μA.
- What are the fixed threshold voltage versions available for the NCV308 series?
The fixed threshold voltage versions include 1.8 V, 3.3 V, and 5.0 V.
- How can the threshold voltage be adjusted in the NCV308SNADJ version?
The threshold voltage can be adjusted using an external resistor divider network.
- What is the temperature range of the NCV308SN180T1G?
The temperature range is from -40°C to +125°C.
- What is the package type of the NCV308SN180T1G?
The package type is TSOP-6 Pb-Free.
- How can the reset delay time be programmed in the NCV308 series?
The reset delay time can be programmed using the CT pin, either by connecting it to VDD, leaving it open, or using a capacitor between CT and GND.
- What is the purpose of the Manual Reset (MR) input?
The Manual Reset input allows a processor or other logic circuits to initiate a reset by driving the MR pin low.
- Is the NCV308SN180T1G qualified for automotive applications?
Yes, it is AEC-Q100 Grade 1 Qualified and PPAP Capable.
- How does the NCV308 series handle short negative transients on the SENSE pin?
The NCV308 series is relatively immune to short negative transients on the SENSE pin, with sensitivity dependent on threshold overdrive.
