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TL2575HV датащи(PDF) 11 Page - Texas Instruments |
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TL2575HV датащи(HTML) 11 Page - Texas Instruments |
11 / 32 page Internal Regulator On/Off _ + _ + 1.23-V Band-Gap Reference 52-kHz Oscillator Reset Thermal Shutdown Current Limit FEEDBACK 4 CIN + VIN 1 Unregulated DC Input GND 3 OUTPUT 2 ON/OFF 5 COUT + D1 L O A D VOUT 1-A Switch Driver Fixed-Gain Error Amplifier Comparator R2 R1 1 k 3.3 V: R2 = 1.7 k 5 V: R2 = 3.1 k 12 V: R2 = 8.84 k 15 V: R2 = 11.3 k ADJ: R1 = Open, R2 = 0 Ω L1 TL2575, TL2575HV www.ti.com SLVS638C – JANUARY 2006 – REVISED NOVEMBER 2014 9 Detailed Description 9.1 Overview The TL2575 and TL2575HV devices greatly simplify the design of switching power supplies by conveniently providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input-voltage range of up to 60 V (TL2575-HV) and available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version, the TL2575 and TL2575HV devices have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external ON/OFF pin. The TL2575 and TL2575HV devices represent superior alternatives to popular three-terminal linear regulators. Due to their high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink is required. Optimized for use with standard series of inductors available from several different manufacturers, the TL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation. The TL2575 and TL2575HV devices are characterized for operation over the virtual junction temperature range of –40°C to 125°C. 9.2 Functional Block Diagram Pin numbers are for the KTT (TO-263) package. Copyright © 2006–2014, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TL2575 TL2575HV |
Аналогичный номер детали - TL2575HV |
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Аналогичное описание - TL2575HV |
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