LMV7239QDBVRQ1

LMV7239QDBVRQ1 is a Texas Instruments voltage supervisor/reset IC (part of the LMV7239 family). It continuously monitors the system supply (Vcc) and generates a reset signal for a microcontroller or digital logic if the supply falls below a preset threshold or during power-up. The device provides deterministic power-on reset and brown-out protection with very low quiescent current, making it suitable for battery-powered designs. The output is typically a reset signal (TTL/CMOS compatible) and may include features such as hysteresis or a manual/reset option, depending on the variant. The QDBVRQ1 suffix denotes a specific packaging/variant of the part (lead-free, RoHS-compliant). For exact threshold options, pinout, and electrical characteristics, refer to the TI datasheet.

Equivalent parts (voltage supervisor/reset ICs) from other vendors include:
- Maxim MAX809/MAX810
- Microchip MCP1316/MCP1317 (and MCP1318)
- Analog Devices ADM803/ADM803A/ADM831
- ON Semiconductor NCP431/NCP435
Note: verify supply voltage range, reset delay, and package to match LMV7239QDBVRQ1.

Here are the key features of LMV7239QDBVRQ1 (TI):
- Automotive-grade, Q1-qualified device (AEC-Q100) for harsh environments
- One-channel voltage supervisor with watchdog timer
- Wide supply range: typically 1.65 V to 5.5 V
- Reset output: push-pull, active-low (reset signal suitable for MCUs)
- Power-on reset and brown-out detection
- Watchdog timer with programmable timeout (external capacitor sets the period)
- Manual reset capability (allows forcing a reset when needed)
- Low quiescent current for battery-powered applications
- Suitable for microcontroller/microprocessor supervision in embedded designs
- Small package suitable for compact boards (as per LMV7239QDBVRQ1 packaging)
Note: Always check the latest datasheet for exact voltage ranges, thresholds, and pinout to match your design.

Pin count: 8 pins (VSSOP-8, DBV package).
Function: LMV7239QDBVRQ1 is a dual low-power window comparator (two comparators with a common input) that checks whether a voltage is within a defined upper and lower threshold window and provides outputs indicating inside/outside window conditions. Automotive grade (Q1).

- Manufacturer: Texas Instruments (TI)
- What kind of company: An American multinational technology company that designs and manufactures semiconductors and integrated circuits, specializing in analog, mixed-signal, and embedded processing devices.

LMV7239QDBVRQ1 is a low-power comparator suitable for:
- Battery-powered systems: supply monitoring and MCU brownout/reset.
- Power management: supervision for DC-DC/LDO regulators.
- Window/threshold detection: fault signaling and level alarms.
- Sensor/actuator interfaces: threshold detection for ADC inputs and PWM control.
- Automotive/industrial electronics: wide temperature/supply operation and fast response.

It uses the DBV package — an 8-pin VSSOP (VSSOP-8) package.