NCP803SN160T1G

NCP803SN160T1G is an ON Semiconductor microprocessor reset/supervisor IC. It monitors the supply voltage (Vcc) and asserts a reset signal to a microcontroller when the voltage drops below its trip point (nominally 1.60 V) or during power-up/down transients. The device provides a clean, logic-level reset output with built-in handling to avoid chatter in brown-out conditions. It is designed for low quiescent current and comes in a compact 3-pin package (SOT-23/SC-70 family). Typical uses include brown-out protection and power-on reset for embedded systems. For exact pinout, timing, tolerance, and electrical characteristics, consult the NCP803SN160T1G datasheet.

Equivalent parts depend on the required reset threshold and delay. Common functionally equivalent devices to NCP803SN160T1G include:
- TI TLV803 family (voltage supervisor/reset)
- Microchip MCP1316/MCP1317 (voltage supervisors)
- Maxim MAX803/MAX804 (reset ICs)
Check exact thresholds, delay options, supply range, and package (SN160T1G) using a cross-reference tool (Digi-Key, Mouser) to get precise substitutes.

Here are the typical features of the NCP803SN160T1G (per ON Semiconductor data):
- Fixed output: 1.6 V
- Buck switching regulator with internal power MOSFET
- Input voltage range: typically 2.0 V to 5.5 V
- Output current: suitable for hundreds of mA (typical around 600 mA)
- High efficiency switching regulator
- Switching frequency: around 1 MHz (typical)
- Soft-start to limit inrush
- Enable pin to shut down the device
- Protection: overcurrent/short-circuit protection and thermal shutdown
- Low quiescent current
- External components required: inductor and Schottky diode (external to the IC)
- Package: 5-pin SOT-23 (T1G variant)
Note: exact electrical specs (ranges, currents, and timing) are per the datasheet revision; verify with the latest sheet for your design.

- Pin count: 3 pins (Vcc, GND, RESET)
- Function: Voltage supervisor/reset generator that monitors Vcc and outputs an active-low reset to a microcontroller, resetting when supply falls below about 1.6 V and releasing after voltage stabilizes.

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation), commonly abbreviated ON Semi.
- What kind of company: An American multinational semiconductor company that designs, manufactures, and sells energy‑efficient integrated circuits and discrete devices for automotive, industrial, computing, and consumer markets (headquartered in Phoenix, Arizona; publicly traded).

The NCP803SN160T1G is a voltage-monitor/reset IC used to generate a reliable MCU/processor reset during power-up/down and brown-out conditions. Typical application areas include:
- Microcontroller/processor supervision in portable and battery-powered devices
- Consumer electronics and wearables
- Automotive and industrial control electronics
- Data acquisition and embedded systems
- Computer peripherals and other digital logic requiring safe start-up/shutdown
It provides a clean reset signal when supply voltages are out of range, helping prevent erratic operation.

SC-70-3 (SOT-23-3) surface-mount package.