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Conv DC-DC 4.5V to 42V Synchronous Step Down Single-Out 5V 3A Automotive 8-Pin HSOIC EP Tube

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LM22670QMR-5.0/NOPB General Description

The LM22670 switching regulator provides all of the functions necessary to implement an efficient high voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42 V N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22670 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22670 device is a member of Texas Instruments’ SIMPLE SWITCHER® family. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external components and the TI WEBENCH® design tool. TI's WEBENCH® tool includes features such as external component calculation, electrical simulation, thermal simulation, and build-It boards for easy design-in.

Texas Instruments, Inc Inventory

Key Features

  • Wide Input Voltage Range: 4.5 V to 42 V
  • Internally Compensated Voltage Mode Control
  • Stable with Low ESR Ceramic Capacitors
  • 120 mΩ N-channel MOSFET PFM Package
  • 100 mΩ N-channel MOSFET SO PowerPAD-8 Package
  • Output Voltage Options: -ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V)
  • ±1.5% Feedback Reference Accuracy
  • 500 kHz Default Switching Frequency
  • Adjustable Switching Frequency and Synchronization
  • –40°C to 125°C Operating Junction Temperature Range
  • Precision Enable Pin
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Fully WEBENCH® enabled
  • LM22670-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C Operating Junction Temperature)
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory


Vin (min) (V) 4.5 Vin (max) (V) 42
Vout (min) (V) 1.285 Vout (max) (V) 37
Iout (max) (A) 3 Iq (typ) (mA) 3.4
Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000
Features Enable, Frequency synchronization, Over Current Protection, Soft Start Fixed Operating temperature range (°C) -40 to 125
Rating Automotive Regulated outputs (#) 1
Control mode Voltage mode Duty cycle (max) (%) 90
Type Converter feature-type Synchronous Step Down
feature-isolation feature-process-technology
feature-output-type Fixed feature-switching-frequency-khz 500(Typ)
feature-number-of-outputs 1 feature-output-voltage-v 5
feature-maximum-output-current-a 3 feature-maximum-output-power-w
feature-minimum-input-voltage-v 4.5 feature-maximum-input-voltage-v 42
feature-typical-switch-current-a feature-efficiency- 90(Min)
feature-packaging Tube feature-rad-hard
feature-pin-count 8 feature-supplier-package HSOIC EP
feature-standard-package-name SO feature-cecc-qualified No
feature-esd-protection Yes 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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Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

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

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Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
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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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LM22670QMR-5.0/NOPB Datasheet PDF

Preliminary Specification LM22670QMR-5.0/NOPB PDF Download

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Buying Guide

  • What is the lifespan of LM22670QMR-5.0/NOPB?

    The lifespan of LM22670QMR-5.0/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 LM22670QMR-5.0/NOPB?

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