TPS3801K33DCKR is a compact power supply voltage monitor launched by Texas Instruments, featuring the SC-70-5 micro surface mount package. This device is used to monitor the power supply voltage of microprocessors or digital systems. It provides a reliable reset signal in case of abnormal voltage or power-on, and is a commonly used model in the TPS3801 series.
This device monitors a single voltage (typical value 3.3V system), with a reset threshold of 2.93V. When the VDD voltage drops below the threshold, the RESET pin outputs a low-level valid signal; once the voltage returns to normal, the reset signal will remain delayed for 120ms (minimum) to 200ms to ensure system stability.
Features ：
• Product Type: Voltage Monitor (Supervisor / Reset IC)
• Monitoring channel number: 1 channel
• Reset threshold voltage: 2.93V
• Reset type: Low level effective, push-pull output
• Reset timeout: 120ms (minimum; some channels indicate 200ms)
• Operating voltage range: 2V to 6V
• Static Current (Iq): Typical value 9 µA, Maximum value 25 µA
• Functional feature: Manual Reset Input (MR), used for external button reset
• Operating temperature range: -40°C to +85°C
• Ultra-small package: SC-70-5 (SOT-353), dimensions approximately 2.0mm × 1.25mm × 1.0mm
• MSL level: Level-1
• Environmental compliance: Compliant with RoHS 3 standards
Application：
• Embedded and Microprocessor Systems: Provide Power-On Reset and Voltage Monitoring for MCUs/MPU
• Battery-powered equipment: Ultra-low static current (9 µA) suitable for portable devices
• Industrial and Automotive Electronics: Wide Operating Temperature Range Supports Harsh Environments
• Critical power monitoring: The system is required to safely reset in the event of a voltage drop.
