ONSEMI USB Overvoltage Protection Controller PMOS FET 1.2-20V TSOP-5

This USB positive overvoltage protection controller from ONSEMI features an internal PMOS FET and overcurrent protection, providing robust defence for your electronic systems. It is designed to instantly disconnect the output from the input if the input voltage exceeds the overvoltage threshold of 5.675V, ensuring the system is positively protected up to +20V. By integrating the PMOS FET, this controller eliminates the need for external devices, which reduces both system cost and the PCB area required on the application board.

Key Features and Protections

The controller incorporates multiple layers of safety features, including overvoltage lockout (OVLO), undervoltage lockout (UVLO), and overcurrent protection. If the charge current exceeds the specified limit, the integrated PMOS turns off. Additionally, it provides a negative going flag (active low FLAG) output to alert the system of voltage, current, or overtemperature faults. An EN enable pin and thermal shutdown feature offer further control and security. The device also complies with IEC61000-4-2 (Level 4) for ESD protection, rated at 8kV for contact and 15kV for air.

Performance Specifications

• Input Voltage Range: 1.2V to 20V
• Overvoltage Threshold: 5.675V
• Supply Quiescent Current: 20µA typical
• Start-Up Delay: 4.0ms typical
• Overcurrent Limit Range: 550mA to 950mA
• Operating Ambient Temperature: -40°C to +85°C

Delivered in a compact TSOP-5 surface mount package, this controller is an efficient solution for safeguarding sensitive USB-powered devices.