LTC3803HS6-5#TRMPBF

DC DC Switching Controllers Overview

The LTC3803HS6-5#TRMPBF is a constant frequency current mode flyback DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.8V to 75V and supports a switching frequency of 200kHz. The device features a maximum duty cycle of 80% and draws a typical operating supply current of 240µA. Designed for high input voltage applications, it drives N-channel MOSFETs and includes shutdown functionality. The component is housed in a TSOT-23-6 package and is rated for operation between -40°C and +150°C junction temperature.

DC DC Switching Controllers Feature Summary

• Constant frequency current mode control optimized for driving N-channel MOSFETs in high input voltage environments
• Integrated shutdown pin for power management and system sleep modes
• Wide input voltage capability supporting direct connection to industrial bus voltages

DC DC Switching Controllers Applications

• Industrial isolated power supplies
• High voltage DC/DC conversion modules
• Point-of-load converters requiring galvanic isolation

DC DC Switching Controllers Procurement Notes

Verify the suffix #TRMPBF indicates tape and reel packaging with cut tape availability options. Confirm the HS6 grade meets the required extended temperature range specifications for your specific application environment. Ensure compatibility with the TSOT-23-6 footprint during PCB layout review.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring wide input voltage ranges up to 75V with a fixed 200kHz switching frequency. The HS6 variant provides extended thermal performance compared to standard grades. Consider the 240µA quiescent current when designing for low-power standby states. Verify that external components support the required output voltage and current ratings for the target flyback topology.

DC DC Switching Controllers Part Context

This component belongs to the LTC3803 family of flyback controllers from Analog Devices. The series is designed for cost-effective, compact isolated power solutions. The specific model integrates current mode control to simplify compensation and improve line regulation. It serves as a core power management element in systems needing reliable isolation from high-voltage sources.

DC DC Switching Controllers FAQ

What is the maximum junction temperature rating for the HS6 grade?

The LTC3803HS6-5#TRMPBF is rated for a maximum junction temperature of +150°C.

Does this controller support synchronous rectification?

No, the datasheet specifies that the LTC3803 does not include integrated synchronous rectifier drivers; it controls the primary side N-channel MOSFET only.