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LM51551

Texas Instruments
Part Number LM51551
Manufacturer Texas Instruments
Description 2.2-MHz Wide Input Nonsynchronous Boost Flyback Controller
Published Apr 12, 2020
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community LM5155, LM51551 SNVSB75B – DECEMB...
Datasheet PDF File LM51551 PDF File

LM51551
LM51551

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community LM5155, LM51551 SNVSB75B – DECEMBER 2018 – REVISED JANUARY 2020 LM5155x 2.
2-MHz Wide Input Nonsynchronous Boost, SEPIC, Flyback Controller 1 Features •1 Functional safety capable – Documentation available to aid functional safety system design • Wide Input Operating Range for Battery Applications – 3.
5-V to 45-V Operating Range – 2.
97-V to 16-V When BIAS = VCC – Minimum Boost Supply Voltage 1.
5 V When BIAS ≥ 3.
5 V – Input Transient Protection up to 50 V • Minimized Battery Drain – Low Shutdown Current ( IQ ≤ 2.
6 µA ) – Low Operating Current ( IQ ≤ 480 µA ) • Small Solution Size and Low Cost – Maximum Switching Frequency of 2.
2 MHz – 12-Pin WSON Package (3 mm × 2 mm) – Integrated Error Amplifier Allows Primary-Side Regulation Without Optocoupler (Flyback) – Minimized Undershoot During Cranking (Startstop Application) • Higher Efficiency With Low-Power Dissipation – 100-mV ±7% Low Current Limit Thresh...


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