NCP803SN293D3T1G

The NCP803SN293D3T1G is ON Semiconductor’s microprocessor supervisor (voltage monitor). It watches the supply voltage and generates a reset signal for a microcontroller or digital IC when the voltage is out of spec or during power-up/power-down, ensuring proper MCU startup. The “293” in the variant name indicates a fixed reset threshold around 2.93 V. It’s a small, low-quiescent-current device in a compact package (D3/T1G, tape & reel). Typical use: connect VCC to the supply, RESET to the MCU’s reset input, and use the device’s reset output to hold the MCU in reset until the voltage is stable. Features usually include a clean, fast reset response and minimal external components for basic operation. For exact electrical specs (threshold accuracy, reset polarity, delay, current, and pinout), consult the NCP803SN293D3T1G datasheet.

Equivalent parts for NCP803SN293D3T1G (2.93 V reset/voltage supervisor) include: TI TLV803 2.93 V option, TI TPS3808-293, Microchip MCP1316-293, and Maxim MAX809/MAX810 (2.93 V variants). Exact cross-reference depends on package/pinout. For a precise substitute, use On Semiconductor’s cross-reference tool or distributor cross-references.

NCP803SN293D3T1G is a microprocessor supervisor/reset IC from ON Semiconductor. Key features:
- Reset threshold around 2.93 V (NCP803SN293) for reliable POR/Brown‑out protection.
- Automatic power-on reset (POR) to guarantee a clean MCU reset on power-up.
- Manual reset input (MR) for external user or event-triggered resets.
- Active-low reset output with solid drive (suitable for direct MCU reset input).
- Low quiescent current in normal operation (highly power-efficient).
- Small 5-pin package (SOT-23/SC‑70 family, with tape-and-reel variant available).
Note: Exact electrical specs (Vcc operating range, reset delay, timing, and packaging variants) are in the datasheet.

- Pin count: 8 pins (8-pin package)
- Function: Microprocessor supervisor/reset IC (voltage detector) with a 2.93 V threshold. It monitors the supply and asserts an active-low reset output for a MCU during power-up/power-down/brown-out conditions. Includes VDD, GND, RESET_N (and typically related control pins).

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation).
- What kind of company: A global American semiconductor company that designs, manufactures, and sells a wide range of semiconductors and power-management ICs for automotive, industrial, communications, and consumer markets.

- Microcontroller/MPU reset supervision at the 2.93V threshold
- Power-on reset and brown-out protection for 3V rails
- Deterministic reset during power-up and power-down in digital systems
- Battery-powered and portable devices (IoT, wearables) needing low quiescent current
- System health monitoring and startup sequencing in embedded electronics
- Manual reset interface for testing, development, and fault recovery

SC-70-6 (SOT-23-6) surface-mount package.