LTC1873EG#TRPBF

DC DC Switching Controllers Overview

The LTC1873EG#TRPBF is a dual synchronous buck switching regulator controller from Analog Devices, designed for high-efficiency operation with low input voltages. It integrates two independent controllers within a single package, supporting a fixed 550 kHz switching frequency. The device accepts an input voltage range of 3 V to 7 V and delivers up to 25 A output current per channel. It features a 5-bit VID interface for processor-controlled voltage regulation, operating between 900 mV and 2 V. Packaged in a 28-lead SSOP, it functions within a temperature range of 0°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual independent synchronous buck controller architecture for multi-phase power delivery
• Integrated 5-bit VID interface enabling direct connection to microprocessors for dynamic voltage scaling
• Fixed 550 kHz switching frequency optimized for compact passive component selection
• Low quiescent current consumption suitable for battery-powered applications

DC DC Switching Controllers Applications

• Portable computers and notebooks requiring multi-core CPU power stages
• Industrial control systems utilizing low-voltage logic processors
• Telecommunications equipment needing efficient point-of-load conversion
• Consumer electronics with strict size constraints for power management ICs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the EG variant corresponds to the commercial temperature range (0°C to +85°C) rather than industrial or extended ranges. Ensure compatibility with the required 28-SSOP footprint during PCB layout. Cross-reference the latest datasheet revision to confirm pinout consistency with existing designs.

DC DC Switching Controllers Selection Notes

Select this component when designing dual-phase power supplies for low-voltage digital loads. The integrated controller simplifies design by eliminating external oscillator components. Consider the 550 kHz frequency trade-off between efficiency and component size. Verify that the load transient requirements align with the controller's response capabilities. Ensure the input voltage source remains stable within the 3 V to 7 V operational window.

DC DC Switching Controllers Part Context

This part belongs to the LTC1873 family of dual synchronous buck controllers. It serves as a core power management solution for applications requiring two independent regulated outputs from a single controller IC. The series is characterized by its integration of gate drivers and control loops, reducing external component count compared to discrete solutions.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other dual synchronous buck controllers from Analog Devices such as the LTC1703 series, which offers similar functionality but may differ in specific electrical characteristics or package options. Verify pin-to-pin compatibility and thermal performance before substitution.