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LM51551-Q1 - 2.2-MHz Wide Input Nonsynchronous Boost Flyback Controller

Download the LM51551-Q1 datasheet PDF. This datasheet also covers the LM5155-Q1 variant, as both devices belong to the same 2.2-mhz wide input nonsynchronous boost flyback controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM5155x-Q1 (LM5155-Q1 and LM51551-Q1) is a wide input range, non-synchronous boost controller that uses peak current mode control.

The device can be used in boost, SEPIC, and flyback topologies.

Key Features

  • AEC-Q100 qualified for automotive.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM5155-Q1-etcTI.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Texas Instruments

Part Number Description
LM51551 2.2-MHz Wide Input Nonsynchronous Boost Flyback Controller
LM5155 2.2-MHz Wide Input Nonsynchronous Boost Flyback Controller
LM5155-Q1 2.2-MHz Wide Input Nonsynchronous Boost Flyback Controller
LM5150-Q1 Wide VIN Automotive Boost Controller
LM51501-Q1 Wide VIN Automotive Boost Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM5155-Q1, LM51551-Q1 SNVSAY4F – AUGUST 2018 – REVISED AUGUST 2023 LM5155x-Q1 2.2-MHz Wide Input Nonsynchronous Boost, SEPIC, Flyback Controller 1 Features • AEC-Q100 qualified for automotive applications – Temperature grade 1: –40°C to +125°C TA • Functional Safety-Capable – Documentation available to aid functional safety system design • Wide input operating range for car and portable 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.