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Conv DC-DC 6V to 75V Synchronous Step Down Single-Out 1.225V 0.5A Automotive 16-Pin TSSOP Tube

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LM5574Q0MT/NOPB General Description

The LM5574-Q1 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75 V, the LM5574-Q1 delivers 0.5 A of continuous output current with an integrated 750 mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5574-Q1 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM5574-Q1 is supported by the full suite of WEBENCH On-Line design tools.

Texas Instruments, Inc Inventory

Key Features

  • LM5574-Q1 is an Automotive Grade Product That is AEC-Q100 Grade Qualified
  • −40°C to + 150°C Operating Junction Temperature
  • Integrated 75 V, 750 mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage Range From 6 V to 75 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.65% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz and 500 kHz With Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-In Protection
  • Package:
    • TSSOP-16
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory


Vin (min) (V) 6 Vin (max) (V) 75
Vout (min) (V) 1.23 Vout (max) (V) 70
Iout (max) (A) 0.5 Iq (typ) (mA) 1
Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500
Features Enable, Frequency synchronization, Over Current Protection, Soft Start Adjustable, Tracking Operating temperature range (°C) -40 to 125
Rating Automotive Regulated outputs (#) 1
Control mode current mode Duty cycle (max) (%) 95
Type Converter feature-type Synchronous Step Down
feature-isolation feature-process-technology
feature-output-type Adjustable feature-switching-frequency-khz 50 to 500
feature-number-of-outputs 1 feature-output-voltage-v 1.225(Min)
feature-maximum-output-current-a 0.5 feature-maximum-output-power-w
feature-minimum-input-voltage-v 6 feature-maximum-input-voltage-v 75
feature-typical-switch-current-a feature-efficiency-
feature-packaging Tube feature-rad-hard
feature-pin-count 16 feature-supplier-package TSSOP
feature-standard-package-name SOP feature-cecc-qualified No
feature-esd-protection feature-escc-qualified
feature-military No feature-aec-qualified Yes
feature-aec-qualified-number AEC-Q100 feature-eccn-code EAR99
feature-svhc No


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The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

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Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


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Buying Guide

  • What is the lifespan of LM5574Q0MT/NOPB?

    The lifespan of LM5574Q0MT/NOPB depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of LM5574Q0MT/NOPB?

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