UC1846-SP

• Product introduction

UC1846 - Description of SP

The UC1846 control device provides all the functions necessary to implement a fixed-frequency, current-mode control scheme while maintaining a minimum number of external components. The superior performance of this technology is improved line adjustment, enhanced load response characteristics, and simpler and easier control loop design. The inherent advantages of the topology include pulse-through pulse current limiting, automatic correction of symmetrical push-pull converters, and the ability to parallelize "power modules" while maintaining current equal sharing.

The protection circuitry includes programmable current limit with built-in undervoltage lockout and soft-start removal. A shutdown function is also available, which can initiate any complete automatic shutdown, reboot, or power off latch.

Features of UC1846 - SP

• Quasi-monetary liabilities-V qualified, patch 5962-86806
• Radiation immunity: 30 kRad (iv) Trade and Industry Department (1)
• Automatic feed-forward compensation
• Programmable pulse-by-pulse current limiting
• Automatic symmetry correction in push-pull configuration
• Enhanced load response characteristics
• Modular power system with parallel operation capability
• Differential current sense amplifiers have a wide common-mode range
• Double pulse suppression
• 500 mA (peak) totem pole output
• ± 1% bandgap reference
• Undervoltage lockout
• Soft-start function
• Close the terminal
• 500 - kHz operation