UCC35702NG4

DC DC Switching Controllers Overview

The UCC35702NG4 is an advanced voltage mode pulse width modulator from Texas Instruments, designed for isolated switching power supplies using primary side control. It supports Boost and Buck topologies with a single output configured as a transistor driver. The device operates at a switching frequency of 700 kHz and delivers a maximum duty cycle of 99%. It features a 1 A output current capability with rise and fall times of 20 ns. Packaged in a 14-pin PDIP format, it functions within a temperature range of 0°C to +70°C and requires a supply voltage between 8.8V and 15V.

DC DC Switching Controllers Feature Summary

• Supports primary side control for isolated switching power supplies
• Integrates current limit, frequency control, sequencing, and soft start capabilities
• Enables clock synchronization for multi-phase or parallel applications

DC DC Switching Controllers Applications

• Isolated DC-DC converter designs
• Boost and Buck topology power management systems
• Primary side controlled switched-mode power supplies

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability variations. Confirm the specific package variant matches design requirements, as the NG4 suffix denotes lead-free packaging compliant with RoHS standards. Cross-reference the datasheet revision to ensure compatibility with existing circuit parameters and thermal management specifications before integration.

DC DC Switching Controllers Selection Notes

Select this component when primary side control is required for isolated topologies such as Boost or Buck converters. Ensure the application demands a 700 kHz switching frequency and fits within the 0°C to +70°C operating temperature range. Verify that the 14-pin PDIP package aligns with board layout constraints and that the 8.8V to 15V supply voltage range suits the system's power architecture.

DC DC Switching Controllers Part Context

The UCC35702NG4 belongs to the UCC3570x family of advanced voltage mode PWM controllers. This series is engineered for high-performance isolated power conversion, offering precise control features like sequencing and soft start. The NG4 designation specifically indicates a lead-free, RoHS-compliant version of the standard UCC35702N, maintaining identical electrical characteristics while meeting environmental regulations for modern electronics manufacturing.

DC DC Switching Controllers Replacement Considerations

• UCC35702D
• UCC35702DG4

DC DC Switching Controllers FAQ

Does the UCC35702NG4 support clock synchronization?

Yes, the device includes a clock synchronization feature to allow timing alignment in complex power systems.

What is the maximum duty cycle supported by this controller?

The UCC35702NG4 supports a maximum duty cycle of 99%.