LTC3890HGN-3#PBF

DC DC Switching Controllers Overview

The LTC3890HGN-3#PBF is a dual synchronous step-down DC/DC controller from Analog Devices, housed in an SSOP-28 package. It operates with an input voltage range of 4 V to 60 V and supports output voltages from 800 mV to 24 V. The device delivers up to 15 A per channel with two independent outputs. Key electrical parameters include a typical quiescent current of 50 µA and a switchable frequency between 105 kHz and 835 kHz. It functions within a temperature range of -40°C to +150°C.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture drives N-channel synchronous power MOSFETs for high-efficiency power conversion.
• Constant frequency current mode control allows for phase-lockable switching frequencies up to 850 kHz.
• Out-of-phase operation minimizes input capacitor ESR power loss and system noise.
• OPTI-LOOP compensation optimizes transient response across wide ranges of output capacitance and ESR.

DC DC Switching Controllers Applications

• Automotive always-on systems
• Battery-operated digital devices
• Distributed DC power systems

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized channels due to limited supply status. Confirm the specific suffix matches design requirements, as packaging variations exist. Check for recent manufacturing changes via official PCN documents. Ensure compatibility with existing thermal management solutions given the operating temperature limits. Validate that the SSOP-28 footprint aligns with the target PCB layout specifications.

DC DC Switching Controllers Selection Notes

Select this controller when high input voltage tolerance up to 60 V is required alongside low standby power consumption. The dual-output capability simplifies designs needing multiple regulated rails from a single source. Consider the SSOP-28 package for applications where board space permits its larger form factor compared to QFN alternatives. Evaluate the need for independent tracking or soft-start features during system initialization.

DC DC Switching Controllers Part Context

This component belongs to the LTC3890 family of high-performance dual step-down switching regulators. It shares core architectural similarities with variants like the LTC3890EUH and LTC3890MPGN but differs in package type and specific operational ratings. The HGN-3 designation indicates the SSOP-28 housing and specific pinout configuration distinct from other family members.

DC DC Switching Controllers Replacement Considerations

LTC3890HGN-3#TRPBF offers identical functionality in tape-and-reel packaging instead of tube. LTC3890EUH#PBF provides the same electrical performance in a 32-QFN package for different board layouts.