Overview
The NCP308SN120T1G is a supervisory circuit IC from ON Semiconductor, designed to monitor system voltages and assert a reset signal when the voltage drops below a specified threshold. This device is part of the NCP308 series, which is optimized to monitor system voltages from 0.405 V to 5.5 V. The NCP308SN120T1G specifically monitors a voltage threshold of 1.2 V and is available in a 6-TSOP package.
The device features a wide supply voltage range of 1.6 V to 5.5 V, very low quiescent current of 1.6 µA, and high threshold voltage accuracy. It also includes a manual reset input and an open-drain/reset output, with the option for a push-pull output upon request.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ON Semiconductor |
| Part Number | NCP308SN120T1G |
| Package | 6-TSOP (SOT-23-6 Thin, TSOT-23-6) |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 1.2 V |
| Output | Open Drain or Open Collector |
| Reset | Active Low |
| Reset Timeout | 1.2 s (Typical) |
| Operating Temperature | -40°C to +125°C (TJ) |
| Mounting Type | Surface Mount |
| Quiescent Current | 1.6 µA |
Key Features
- Wide Supply Voltage Range: 1.6 V to 5.5 V
- Low Quiescent Current: 1.6 µA
- High Threshold Voltage Accuracy: 0.31% typical
- Manual Reset Input (MR): Allows for manual reset of the system
- Open-Drain/Reset Output: With the option for push-pull output upon request
- Flexible Delay Time Programmability: From 1.25 ms to 10 s using the CT pin
- Small Package Options: TSOP-6 and WDFN6 2 x 2 mm, Pb-Free packages
- AEC-Q100 Qualified and PPAP Capable: Suitable for automotive and other critical applications
Applications
- DSP or Microcontroller Applications: Ideal for monitoring and resetting microprocessor-based systems.
- Notebook/Desktop Computers: Ensures stable operation by monitoring critical voltage rails.
- PDA/Hand-Held Products: Suitable for battery-powered devices requiring voltage supervision.
- Portable/Battery-Powered Products: Monitors voltage levels to prevent system malfunctions.
- FPGA/ASIC Applications: Provides reliable voltage monitoring for complex digital circuits.
Q & A
- What is the primary function of the NCP308SN120T1G?
The primary function is to monitor system voltages and assert a reset signal when the voltage drops below the specified threshold of 1.2 V.
- What is the supply voltage range of the NCP308SN120T1G?
The supply voltage range is from 1.6 V to 5.5 V.
- What is the quiescent current of the NCP308SN120T1G?
The quiescent current is 1.6 µA.
- Does the NCP308SN120T1G support manual reset?
Yes, it includes a manual reset input (MR).
- What are the package options for the NCP308SN120T1G?
The device is available in a 6-TSOP package (SOT-23-6 Thin, TSOT-23-6).
- What is the operating temperature range of the NCP308SN120T1G?
The operating temperature range is -40°C to +125°C (TJ).
- Is the NCP308SN120T1G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other critical applications.
- How can the reset delay time be programmed?
The reset delay time can be programmed using the CT pin, allowing for a range from 1.25 ms to 10 s.
- What is the output type of the NCP308SN120T1G?
The output is open-drain or open-collector, with the option for push-pull output upon request.
- Is the NCP308SN120T1G RoHS compliant?
Yes, the device is RoHS compliant.
