The Rohm Semiconductor BD4849G is a reset IC, also known as a voltage detector or voltage supervisor. This integrated circuit is designed to monitor the power supply voltage in electronic devices and issue a reset signal to a microcontroller (MCU) or other digital logic when the voltage drops below a specified threshold. This prevents erratic behavior and data corruption caused by insufficient supply voltage.
Applications:
- Microcontroller reset circuits
- Power supply monitoring in embedded systems
- CPU and memory protection
- Automotive electronics
- Industrial control systems
Features:
- Detection voltage: 4.9V
- Low current consumption
- Open drain output
- Small package (SMT)
- High accuracy detection
- Wide operating temperature range
Benefits:
- Prevents system malfunctions caused by low voltage
- Ensures reliable system startup after power loss
- Reduces the risk of data corruption
- Simple to integrate into existing designs
- Extends battery life in portable devices
- Improves overall system stability and reliability
Additional Details:
The BD4849G features a detection voltage of 4.9V, making it suitable for monitoring 5V power rails. Its open-drain output requires an external pull-up resistor. The small surface-mount package facilitates compact board layouts. The datasheet provides detailed information on electrical characteristics, timing diagrams, and application circuits. It is crucial to select the appropriate reset IC with a detection voltage that matches the power supply requirements of the protected circuitry. The BD4849G provides a reliable and cost-effective solution for voltage monitoring and reset functionality.
