SG2543DW

Power Supply Controllers, Monitors Overview

The SG2543DW is a pulse width modulator integrated circuit designed for switching power supply applications. It features dual source/sink output drivers and latching PWM to prevent multiple pulses. The device includes internal soft-start, operates from 8 to 35 V, and supports an oscillator range of 100 Hz to 500 kHz. It provides a 5.1 V reference trimmed to ±1% and offers adjustable dead-time control with undervoltage lockout.

Power Supply Controllers, Monitors Feature Summary

• Dual source/sink output drivers
• Latching PWM to prevent multiple pulses
• Internal soft-start circuitry
• Adjustable dead-time control

Power Supply Controllers, Monitors Applications

• Switching power supplies
• DC-DC converters
• Flyback converter designs

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'DW' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements within the 8V to 35V operating range. Confirm that the 5.1V reference accuracy meets design specifications. Check for availability of updated datasheets or errata sheets prior to finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when dual-channel PWM control with latching functionality is required. Consider the 8V to 35V input range and 100Hz to 500kHz frequency capabilities. Evaluate the need for internal soft-start and adjustable dead-time features. Compare against similar SG3525 variants if different reference voltages or pinouts are needed.

Power Supply Controllers, Monitors Part Context

The SG2543 series belongs to Microchip's family of pulse width modulator ICs. These devices are engineered to reduce external component count in power supply designs. They offer improved performance over earlier generations through integrated features like error amplifier common-mode range inclusion and built-in shutdown controls.

Power Supply Controllers, Monitors Replacement Considerations

The SG3525A is a functionally similar device within the same family. Verify pin compatibility and reference voltage differences (5.1V vs standard 5V) before substitution. Check if the specific 'DW' package variant has direct equivalents in other manufacturers' portfolios.