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UCC1807-2 Datasheet(PDF) 1 Page - Texas Instruments |
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UCC1807-2 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 11 page 1 UCC1807-1/-2/-3 UCC2807-1/-2/-3 UCC3807-1/-2/-3 DESCRIPTION The UCC3807 family of high speed, low power integrated circuits contains all of the control and drive circuitry required for off-line and DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. These devices are similar to the UCC3800 family, but with the added fea- ture of a user programmable maximum duty cycle. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3807 family also features internal full cycle soft start and internal leading edge blanking of the current sense input. The UCC3807 family offers a variety of package options, temperature range options, and choice of critical voltage levels. The family has UVLO thresholds and hysteresis levels for off-line and battery powered systems. Thresholds are shown in the table below. Programmable Maximum Duty Cycle PWM Controller FEATURES User Programmable Maximum PWM Duty Cycle 100 m A Startup Current Operation to 1MHz Internal Full Cycle Soft Start Internal Leading Edge Blanking of Current Sense Signal 1A Totem Pole Output SLUS163 - JUNE 1997 BLOCK DIAGRAM UDG-95001-1 Part Number Turn-on Threshold Turn-off Threshold Packages UCCx807-1 7.2V 6.9V J UCCx807-2 12.5V 8.3V N, D UCCx807-3 4.3V 4.1V N, D, PW application INFO available |
Similar Part No. - UCC1807-2 |
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Similar Description - UCC1807-2 |
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