UCC28C42是TI公司的一款PWM与谐振控制器产品,UCC28C42是BiCMOS 低电流 8 引脚 PWM 电流模式控制器,本页介绍了UCC28C42的产品说明、应用、特性等,并给出了与UCC28C42相关的TI元器件型号供参考。
UCC28C42 - BiCMOS 低电流 8 引脚 PWM 电流模式控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司(Texas Instruments,德州仪器)
UCC38C4x family is a high-performance current-mode PWM controller. It is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as UCC38C40 and UCC38C41.
Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. The device also features a very fast current-sense-to-output delay time of 35 ns and a ±1 A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.
The UCC38C4x family is offered in 8-pin packages, MSOP (DGK), SOIC (D) and PDIP (P).
- Enhanced Replacement for UC3842A Family With Pin-to-Pin Compatibility
- 1-MHz Operation
- 50-µA Start-Up Current, 100-µA Maximum
- Low Operating Current of 2.3 mA at 52 kHz
- Fast 35-ns Cycle-by-Cycle Overcurrent 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 Under Voltage Lockout Versions
- MSOP-8 Package Minimizes Board Space
- APPLICATIONS
- Switch-Mode Power Supplies
- dc-to-dc Converters
- Board Mount Power Modules