UC1846VTD1

Power Supply Controllers, Monitors Overview

The UC1846VTD1 is a die-level current-mode PWM controller manufactured by Texas Instruments. It operates at a switching frequency of 500 kHz with a maximum duty cycle of 50%. The device features a totem-pole output capable of sourcing and sinking 500 mA, powered by a supply voltage range of 6.95 V to 40 V. Designed for high reliability, it supports multiple topologies including boost, flyback, forward, full bridge, half bridge, and push-pull configurations.

Power Supply Controllers, Monitors Feature Summary

• Current-mode control architecture with pulse-by-pulse current limiting
• High-current totem-pole output stage for direct gate drive
• Integrated oscillator with external timing resistor capability
• Undervoltage lockout with hysteresis for stable startup

Power Supply Controllers, Monitors Applications

• Offline power supplies
• DC-to-DC converters
• Military and aerospace electronics

Power Supply Controllers, Monitors Procurement Notes

Verify the specific tape-and-reel or tube packaging configuration required for your assembly process when ordering the UC1846VTD1 variant. Confirm that the procurement channel provides traceability documentation suitable for your quality standards, as this component is supplied in die form factor requiring specialized handling during integration.

Power Supply Controllers, Monitors Selection Notes

Select the UC1846VTD1 when a bare die solution is required for custom substrate integration or space-constrained designs. Ensure the application circuit accounts for the thermal dissipation characteristics inherent to the exposed die package. This part is suitable for applications where standard surface-mount packages do not fit the mechanical constraints.

Power Supply Controllers, Monitors Part Context

This component belongs to the UCx846 family of current-mode PWM controllers, which are industry-standard solutions for switch-mode power supplies. The 'V' suffix typically denotes a specific vendor or tape/reel configuration for the die, while 'D1' indicates the die format. It shares functional pinouts and electrical characteristics with other members of the UC1846/UC2846/UC3846 series.

Power Supply Controllers, Monitors Replacement Considerations

Compatible replacements include the UC1846DW (SOIC-16 package) and UC2846DW (industrial temperature grade SOIC-16). For military-grade requirements, consider the UC1843ALQMLV. Note that these are packaged ICs, not dies, requiring different PCB layout considerations.