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SGM2202-3.3YN5G/TE

Part No SGM2202-3.3YN5G/TE
Manufacturer SG Micro Corp
Catalog Misc Products
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Manufacturer SG Micro Corp
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Win Source Part Number 837346-SGM2202-3.3YN5G/TE
Ultra Librarian 3D Model Ultra Librarian SGM2202-3.3YN5G/TE CAD Model

Description

The SGM2202-3.3YN5G/TE is a voltage detector (also known as a voltage supervisor or reset IC) manufactured by SG Micro Corp. It's designed to monitor the voltage level of a power supply and provide a reset signal to a microcontroller or other digital circuit when the voltage falls below a specified threshold. This is essential for preventing data corruption and ensuring proper system operation during power-up, power-down, and brownout conditions.

Applications

  • Microcontroller-Based Systems: Ensuring a clean reset during power-up and preventing operation during undervoltage conditions.
  • Memory Protection: Preventing write operations to memory (e.g., EEPROM, Flash) during voltage dips to avoid data corruption.
  • Real-Time Clocks (RTC): Ensuring the RTC operates correctly by resetting it if the supply voltage falls too low.
  • Portable Electronics: Providing a reliable power-on reset (POR) and brownout protection.
  • Embedded Systems: Monitoring power rails for critical components.
  • Industrial Control: Protecting sensitive electronics from power supply fluctuations.

Features

  • Fixed Threshold Voltage (3.3V): Detects undervoltage conditions at a precise 3.3V level.
  • Low Quiescent Current: Minimizes power consumption, making it suitable for battery-powered applications.
  • Open-Drain Output: Provides a flexible interface to microcontrollers and other digital logic.
  • Hysteresis: Prevents oscillations near the threshold voltage.
  • Small Package: Available in a compact package for space-constrained designs.
  • Internal Pull-up Resistor (optional, check datasheet): Simplifies the design by eliminating the need for an external pull-up resistor in some configurations.

Benefits

  • Data Integrity: Prevents data corruption in memory during voltage fluctuations.
  • System Reliability: Ensures proper operation of the system by resetting it during undervoltage conditions.
  • Power-On Reset (POR): Provides a reliable reset signal at power-up.
  • Brownout Protection: Protects the system from unexpected behavior during voltage sags.
  • Long Battery Life: Low quiescent current extends battery life in portable applications.
  • Simplified Design: Requires minimal external components, reducing BOM cost and complexity.

Additional Details

The SGM2202-3.3YN5G/TE monitors the input voltage and asserts a reset signal when the voltage drops below 3.3V. The open-drain output requires a pull-up resistor to a positive voltage rail (typically the microcontroller's VCC). The hysteresis feature prevents the output from oscillating when the input voltage is near the threshold. Consult the datasheet for detailed specifications, timing diagrams, and application circuit examples. It is crucial to include a decoupling capacitor near the power supply pin of the SGM2202-3.3YN5G/TE to ensure stable operation.

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