Thông số kỹ thuật
| thuộc tính | Giá trị |
| Supplier | Texas Instruments,Rochester Electronics, LLC |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | Automotive, AEC-Q100 |
| Part Status | Active |
| Type | General Purpose |
| Number of Elements | 1 |
| Output Type | Open Drain, Push-Pull |
| Voltage - Supply, Single/Dual (±) | 2.7V ~ 5.5V |
| Voltage - Input Offset (Max) | 8mV @ 5V |
| Current - Input Bias(Max) | 0.6µA |
| Current - Quiescent (Max) | 95µA |
| CMRRPSRR(Typ) | 67dB CMRR, 85dB PSRR |
| Propagation Delay(Max) | 75ns |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Tổng quan
Description
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
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.
- 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.
Features
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.
- 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.
Pinout
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).
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
- 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.
- 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.
Application
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.
- 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.
Package
It uses the DBV package — an 8-pin VSSOP (VSSOP-8) package.
