UCC38C40

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458G – JULY 2000 – REVISED JANUARY 2017 UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller 1 Features 1 Enhanced Replacement for UCx84x and UCx84xA Family With Pin-to-Pin Compatibility 1-MHz Operation 50-µA Standby Current, 100-µA Maximum Low Operating Current of 2.3 mA at 52 kHz Fast 35-ns Cycle-by-Cycle Over-Current Limiting ±1-A Peak Output Current Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times ±1% Initial Trimmed 2.5-V Error Amplifier Reference Trimmed Oscillator Discharge Current New Undervoltage Lockout Versions VSSOP-8 Package Minimizes Board Space 2 Applications Switch-Mode Power Supplies General Purpose DC-DC or Off-Line Isolated Power Converters Board Mount Power Modules 3 Description UCCx8C4x family are high-performance, currentmode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency. In addition, lower startup voltage versions of 7 V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –...