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首 页 > 新闻动态 > 公司新闻 > 供应 UCC28C43MDREP TI SOP8 BiCMOS低功耗电流模式PWM控制器 供应 UCC28C43MDREP TI SOP8 BiCMOS低功耗电流模式PWM控制器FEATURES
APPLICATIONS DESCRIPTION UCC28C4x-EP BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLERS SGLS352B–DECEMBER 2006–REVISED MAY 2007 · Low Operating Current of 2.3 mA at 52 kHz · Controlled Baseline · Fast 35 ns Cycle-by-Cycle Overcurrent – One Assembly/Test Site, One Fabrication Limiting Site · ±1 A Peak Output Current – Extended Temperature Performance of · Rail-to-Rail Output Swings With 25 ns Rise –55°C to 125°C and 20 ns Fall Times · Enhanced Diminishing Manufacturing Sources · ±1% Initial Trimmed 2.5 V Error Amplifier (DMS) Support Reference · Enhanced Product-Change Notification · Trimmed Oscillator Discharge Current · Qualification Pedigree (1) · New Undervoltage Lockout Versions · Enhanced Replacements for UC2842A Family · MSOP-8 Package Minimizes Board Space With Pin-to-Pin Compatibility · 1 MHz Operation · 50 mA Standby Current, 100 mA Maximum · Switch Mode Power Supplies (1) Component qualification in accordance with JEDEC and · DC-to-DC Converters industry standards to ensure reliable operation over an · Board Mount Power Modules extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. The UCC28C4x family are high performance current mode PWM controllers. They are enhanced BiCMOS versions with pin-for-pin compatibility to the industry standard UC284xA family and UC284x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as UCC28C40 and UCC28C41. Providing necessary features to control fixed frequency, peak current mode power supplies, this family offers several performance advantages. These devices offer 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 devices also feature a 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 UCC28C4x family is offered in 8-pin package SOIC (D). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA |
