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LTC3786 Datasheet(PDF) 1 Page - Linear Technology |
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LTC3786 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 44 page  LT8710 1 8710f For more information www.linear.com/LT8710 Typical applicaTion FeaTures DescripTion Synchronous SEPIC/ Inverting/Boost Controller with Output Current Control The LT®8710 is a synchronous PWM DC/DC controller with a rail-to-rail output current monitor and control. The LT8710 is ideal for many types of power supply topologies and can be easily configured for boost, SEPIC, inverting, or flyback configurations. TheLT8710’srail-to-railoutputcurrentmonitorandcontrol allows the part to be configured in current limited applica- tions such as battery charging. The FLAG pin can be used as a power good indication or C/10 indication allowing for accurate bulk and float battery voltages. The LT8710’s switching frequency range can be set be- tween 100kHz and 750kHz using an external resistor or synchronized to an external clock. The LT8710 also features innovative EN/FBIN pin cir- cuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function. The pin is also used for input voltage regulation to avoid collapsing a high impedance input supply. Additional features such as frequency foldback and soft-start are integrated. The LT8710 is available in a 20-lead TSSOP package. 300kHz Inverter Generates –5V from a 4.5V to 25V Input applicaTions L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, Including 7579816. n Wide Input Range: 4.5V to 80V n Rail-to-Rail Output Current Monitor and Control n Input Voltage Regulation for High Impedance Inputs n C/10 or Power Good Indication Pin n MODE Pin for Forced CCM or Pulse-Skipping Operation n Switching Frequency Up to 750kHz n Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter with Single Feedback Pin n Can Be Synchronized to External Clock n High Gain EN/FBIN Pin Accepts Slowly Varying Input Signals n 20-Lead TSSOP Package n High Power Local Power Supply n Wide Input Voltage Range SEPIC/Inverting n Lead Acid Battery Charger n Automotive Engine Control Unit (ECU) Power n Solar Panel Power Converter Efficiency and Power Loss IMON SS GND CSP TG CSN BG LT8710 8710 TA01a MODE INTVCC RT SYNC VIN EN/FBIN BIAS INTVEE FBX FLAG VC ISN ISP VOUT –5V 7A VIN 4.5V TO 25V 13.3k 2.2µH 120µF 2.2µF 100µF ×2 10k 10µF ×4 118k 1.5m 4m 2.2µH 10µF ×2 60.4k 11.5k 2.2µF INTVCC 330µF 47nF 220nF 3.3nF 100pF + 499 0.47µF LOAD CURRENT (A) 0 100 80 90 70 65 50 40 30 20 8 6 7 5 4 3 2 1 0 1 4 5 6 8710 TA01b 7 2 3 VIN = 5V VIN = 12V |
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Similar Description - LTC3786 |
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