• Product Introduction

UCC38C44D PWM controller with BiCMOS low-power current mode

illustrate   The UCC38C4x home is a high-performance current-mode PWM controller. This is an enhanced version of BiCMOS with pin-to-pin compatibility with the industry standard UC384xA home and PWM controller UC384x home. In addition, the 7-volt low-voltage version of the start-up is available as a UCC38C40 and UCC38C41. Providing the necessary features to control a fixed-frequency, peak-current-mode power supply, the series offers the following performance benefits: The device provides high operating frequencies up to one low start-up and operating current megahertz to improve efficiency, minimize start-up losses, and low operating power. The device also features a very fast current-detected output with a delay time of 35 nanoseconds and an improved peak output rise and fall time of ±1 for driving high currents directly from external MOSFETs.   characteristic   Enhance pin-to-pin compatibility with home and replacement UC3842A 1 - MHz operation 50μA start-up current, 100μA max The low operating current of 2.3 mA is 52 kHz Periodic overcurrent protection for cycles as fast as 35 ns ± 1 peak output current Orbital time 25-ns rise and 20 nanosecond orbit output swing fall ± 1% of the initial edge of the 2.5-V error amplifier reference Side vibration discharge current New version of low voltage locking The MSOP-8 package reduces board space apply Switching power supply DC-to-DC converters Board-mounted power module