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LMR23625CFQDDAQ1 データシート(PDF) 10 Page - Texas Instruments |
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LMR23625CFQDDAQ1 データシート(HTML) 10 Page - Texas Instruments |
10 / 40 page EA REF EN/SYNC SW CBOOT VCC Internal SS OV/UV Detector Oscillator Precision Enable LDO PFM Detector Slope Comp PWM CONTROL LOGIC UVLO TSD Freq Foldback Zero Cross HICCUP Detector VIN Rc Cc PGND FB LS I Sense HS I Sense FB VCC Enable SYNC Detector SYNC Signal SYNC Signal AGND (PGOOD) Copyright © 2016, Texas Instruments Incorporated 10 LMR23625-Q1 SNVSAR5B – DECEMBER 2016 – REVISED MARCH 2018 www.ti.com Product Folder Links: LMR23625-Q1 Submit Documentation Feedback Copyright © 2016–2018, Texas Instruments Incorporated 8 Detailed Description 8.1 Overview The LMR23625-Q1 SIMPLE SWITCHER® regulator is an easy-to-use synchronous step-down DC-DC converter operating from a 4-V to 36-V supply voltage. It is capable of delivering up to 2.5-A, DC-load current with good thermal performance in a small solution size. An extended family is available, for both the SOIC and WSON packages, in multiple current options from 1 A to 3 A in pin-to-pin compatible packages. The LMR23625-Q1 employs fixed-frequency peak-current-mode control. The device enters PFM mode at light load to achieve high efficiency. A user-selectable FPWM option is provided to achieve low output voltage ripple, tight output voltage regulation, and constant switching frequency. The device is internally compensated, which reduces design time and requires few external components. The LMR23625-Q1 is capable of synchronization to an external clock within the range of 200 kHz to 2.2 MHz. Additional features such as precision enable, power-good flag, and internal soft-start provide a flexible and easy to use solution for a wide range of applications. Protection features include thermal shutdown, VIN and VCC undervoltage lockout (UVLO), cycle-by-cycle current limit, and hiccup-mode short-circuit protection. The family requires very few external components and has a pinout designed for simple, optimum PCB layout. 8.2 Functional Block Diagram |
同様の部品番号 - LMR23625CFQDDAQ1 |
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同様の説明 - LMR23625CFQDDAQ1 |
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