TL3845PG4

DC DC Switching Controllers Overview

The TL3845PG4 is a current-mode PWM controller manufactured by Texas Instruments, designed for offline and DC-to-DC fixed-frequency applications. It operates within an input voltage range of 7.6 V to 30 V and supports switching frequencies up to 500 kHz. The device features a maximum duty cycle of 50% and provides a peak output drive current of 1 A. It is housed in an 8-pin PDIP package and functions reliably across a temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Current-mode control architecture with automatic feed-forward compensation
• Integrated high-current图腾柱 output stage for driving N-channel MOSFETs
• Built-in undervoltage lockout with hysteresis and low startup current
• Per-cycle current limiting with latch-off protection

DC DC Switching Controllers Applications

• Offline flyback converters
• Forward converters
• Boost converters
• DC-to-DC step-up power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's official documentation to confirm compliance details and material composition. Ensure the ordering information matches the exact package type and thermal characteristics required for the target design. Cross-reference the datasheet revision history for any recent manufacturing changes or pinout updates before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring robust current-mode control with integrated protection features. The 1 A output drive capability suits moderate-power applications without external gate drivers. Consider the through-hole PDIP packaging for prototyping or environments where mechanical stress resistance is prioritized over board space efficiency.

DC DC Switching Controllers Part Context

This part belongs to the TL3845 series of single-ended current-mode PWM controllers. It shares functional similarities with other industry-standard controllers but offers specific internal circuit optimizations such as precise reference trimming and dual-pulse suppression. The series is widely used in cost-sensitive power supply designs requiring reliable performance.

DC DC Switching Controllers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers. Verify pin compatibility and electrical specifications before substituting with similar models from other manufacturers.