SCT71401F50TWDR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The SCT71401F50TWDR is a low-dropout linear regulator designed for input voltages ranging from 3V to 40V, with transient tolerance up to 45V. It delivers a fixed 5V output at a maximum current of 150mA. The device features a typical quiescent current of 2.5µA and supports output capacitance between 3.3µF and 220µF. Output voltage accuracy is ±1% at 25°C and ±2% across the -40°C to 125°C temperature range. It includes integrated short-circuit protection with over-current foldback (OCFB), thermal shutdown, and an internal soft-start time of 660µs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Wide input voltage range supporting 3V to 40V operation with 45V transient capability
• Ultra-low quiescent current of 2.5µA suitable for battery-powered applications
• Integrated protection mechanisms including short-circuit protection with OCFB and thermal shutdown

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable devices
• Microcontroller and CAN/LIN transceiver power supplies
• Handheld equipment and POS systems
• Industrial control instrumentation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific suffix 'F50TWDR' corresponds to the fixed 5V output variant as indicated by the model designation. Confirm package type matches SOT23-5 or similar based on the 'WDR' suffix if documented in official datasheets. Ensure compatibility with required output capacitor ESR ranges (0.001Ω to 5Ω) for stability. Cross-reference pinouts with official documentation to prevent integration errors during PCB layout.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a wide input voltage range up to 40V is required alongside low standby current consumption. The fixed 5V output makes it suitable for standard logic supply rails. Consider the 150mA current limit for load requirements. The integrated OCFB feature provides robustness against fault conditions, making it appropriate for industrial environments where reliability under transient loads is critical.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The SCT71401 series comprises low-dropout linear regulators optimized for high-voltage input applications. This family offers various fixed output voltages including 3.3V and 5V versions. The series is characterized by low quiescent current and high input voltage tolerance, targeting portable electronics and industrial control systems requiring stable regulation from varying source voltages.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The SGM2203 is identified as a substitute part number for the SCT71401 series. Verify electrical parameter compatibility, specifically input voltage range and output current capabilities, before substitution. Check pinout alignment and package dimensions to ensure mechanical fit without redesigning the footprint.