UCC38C53DR

DC DC Switching Controllers Overview

The UCC38C53DR is a low-power current-mode PWM controller from Texas Instruments, designed for commercial applications. It operates with a maximum supply voltage of 30 V and supports switching frequencies up to 1 MHz. The device features a single output capable of delivering 1 A drive current, with rail-to-rail output capability. It offers a maximum duty cycle of 100% and includes isolated functionality. Electrical characteristics include a rise time of 25 ns and a fall time of 20 ns, with an operating supply current of 1.3 mA. The component is housed in an 8-pin VSSOP package and functions within a temperature range of 0°C to +85°C.

DC DC Switching Controllers Feature Summary

• Supports high-frequency operation up to 1 MHz for compact magnetic design
• Provides robust gate drive with 1 A peak output current capability
• Enables continuous conduction mode through 100% maximum duty cycle
• Integrates isolated control architecture for safety compliance

DC DC Switching Controllers Applications

• Low-power AC-DC adapters
• Flyback converter topologies
• Buck converter implementations
• Forward converter designs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'DR' corresponds to the VSSOP-8 tape and reel packaging configuration as documented by Texas Instruments. Confirm that the commercial grade temperature rating aligns with system requirements. Ensure compatibility with the intended switching frequency limits and check for any recent product change notifications affecting pinout or electrical parameters before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component when a low-power current-mode solution is required for commercial-grade power supplies. The 1 MHz switching capability allows for smaller passive components compared to lower-frequency alternatives. Consider the 1 A output drive strength for direct gate driving of MOSFETs without external buffers. The VSSOP-8 package is suitable for space-constrained surface-mount assemblies requiring standard commercial thermal performance.

DC DC Switching Controllers Part Context

The UCC38C53DR belongs to the UCC38C53 series of low-power current-mode controllers. This family is engineered for cost-sensitive commercial applications where efficiency and size are prioritized. The device integrates essential PWM control logic with high-current output drivers, simplifying the design of isolated and non-isolated DC-DC converters while maintaining reliable operation across standard commercial temperature ranges.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.