NCP301LSN27T1G

NCP301LSN27T1G is ON Semiconductor’s fixed-threshold voltage supervisor (microprocessor reset circuit). It continuously monitors the supply voltage (VDD) and provides a reset signal to a microcontroller when the supply falls below its fixed threshold. For this variant, the threshold is 2.7 V. Once VDD rises above the threshold and stabilizes, the reset output is released after a built-in delay, ensuring a clean MCU start-up. The device offers low quiescent current and is suitable for battery-powered and low-voltage applications. It comes in a small lead-free LSN package designed for compact, space-constrained designs. Typical uses include supervising MCU/power rails in embedded systems, wearables, and portable equipment. For exact pinout, timing, current, and package details, refer to the NCP301LSN27T1G datasheet.

Equivalent parts (2.7 V reset supervisors in 3-pin packages):
- TI TLV803-2.7 (SOT-23-3)
- Microchip MCP1316-270 (MCP1316-270I/CH, SOT-23-3)
- Maxim MAX809/MAX810 2.7 V variants (SOT-23-3)
Notes: These provide similar 2.7 V reset monitoring with push-pull/reset outputs. Check exact pinout, hold/reset polarity, and hysteresis to match NCP301LSN27T1G.

Here are concise features for NCP301LSN27T1G (voltage supervisor/reset IC):
- Fixed reset threshold: 2.7 V (NCP301LSN27 variant)
- Reset output: active-low (RESET_n), push-pull
- No external components required (integrated supervisor)
- Automatic reset during power-up/power-down; release on valid supply
- Very low quiescent current
- Fast, clean reset with basic glitch resistance
- Wide operating temperature range (typical industrial range: -40°C to +125°C)
- Small 6-pin package (SC-70 / similar) with lead-free/RoHS compliance
- ESD protection on input/output pins
Note: For exact electrical specs (current, rise/fall times, accurate operating voltage range, packaging details), consult the latest On Semiconductor datasheet for NCP301LSN27T1G.

- Pin count: 3 pins (VDD, GND, RESET).
- Function: NCP301LSN27T1G is a 2.7V-threshold voltage supervisor (reset IC). It monitors VDD and asserts a reset to the MCU during power-up/power-down or brown-out conditions; the RESET output is active-low.

- Manufacturer: ON Semiconductor (ON Semi)
- What kind of company: A global semiconductor company that designs and manufactures energy-efficient ICs and discrete components (power management, sensors, analog, etc.) for automotive, industrial, communications, and consumer markets.

Typical application areas for NCP301LSN27T1G:
- Hot-swap controllers for power supplies/backplanes (inrush current limiting and overcurrent protection)
- Protection and current limiting for DC-DC power paths in servers, telecom, and data‑center equipment
- Front-end protection in AC–DC adapters and multi‑rail power architectures
- Fault protection and power sequencing in industrial equipment
- Battery-powered devices requiring safe power-up/down and overcurrent protection

SOT-23 (3-pin) package.