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UCC1806PW Datasheet(PDF) 1 Page - Texas Instruments |
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UCC1806PW Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 21 page  UCC1806 UCC2806 UCC3806 SLUS272C − FEBRUARY 2000 − REVISED JUNE 2003 LOW-POWER, DUALOUTPUT, CURRENT MODE PWM CONTROLLER 1 www.ti.com FEATURES D BiCMOS Version of UC3846 Family D 1.4-mA Maximum Operating Current D 100-µA Maximum Startup Current D ±0.5-A Peak Output Current D 125-ns Circuit Delay D Easier Parallelability D Improved Benefits of Current Mode Control DESCRIPTION The UCC3806 family of BiCMOS PWM controllers offers exceptionally improved performance with a familiar architecture. With the same block diagram and pinout of the popular UC3846 series, the UCC3806 line features increased switching frequency capability while greatly reducing the bias current used within the device. With a typical startup current of 50 µA and a well defined voltage threshold for turn-on, these devices are favored for applications ranging from off-line power supplies to battery operated portable equipment. Dual high-current, MOSFET driving outputs and a fast current sense loop further enhance device versatility. All the benefits of current mode control including simpler loop closing, voltage feed-forward, parallelability with current sharing, pulse-by-pulse current limiting, and push/pull symmetry correction are readily achievable with the UCC3806 series. These devices are available in multiple package options for both through-hole and surface mount applications; and in commercial, industrial, and military temperature ranges. The UCC3806 is specified for operation from −55 °C to 125°C, the UCC2806 is specified for operation from −40 °C to 85°C, and the UCC3806 is specified for operation from 0 °C to 70°C. SIMPLIFIED APPLICATION DIAGRAM 2 8 5 1 6 11 14 15 INV AOUT BOUT VREF CT NI CURLIM UCC3806 10 9 SYNC RT 4 CS+ VIN 15 13 VC 7 COMP UCC3612 CS− 3 12 GND UC39431 +VIN +VOUT SHUT DOWN PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 1999 − 2003, Texas Instruments Incorporated |
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