LM22673MRE-ADJ/NOPB Part Information

Details for LM22673MRE-ADJ/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM22673 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. A switching frequency of 500 kHz allows for small external components and good transient response. An adjustable soft-start feature is provided through the selection of a single external capacitor. In addition, the switch current limit can be programmed with a single external resistor, allowing solution optimization. The LM22673 device also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22673 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.

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Part Features

  • 100 mu2126 N-Channel MOSFET SO PowerPAD Package
  • 120 mu2126 N-Channel MOSFET PFM Package
  • Adjustable Current Limit
  • Adjustable Soft-Start
  • Fully Webenchu00ae Enabled
  • Integrated Boot-Strap Diode
  • Internally Compensated Voltage Mode Control
  • LM22673-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (u201340u00b0C to +125u00b0C Junction Temperature)
  • Output Voltage Options: -ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V)
  • PFM (Exposed Pad)
  • SO PowerPAD (Exposed Pad)
  • Stable with Low ESR Ceramic Capacitors
  • Switching Frequency of 500 kHz
  • Wide Input Voltage Range: 4.5 V to 42 V
  • u00b11.5% Feedback Reference Accuracy
  • u201340u00b0C to 125u00b0C Operating Junction Temperature Range

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 4.5V
Input Voltage Max 42V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOIC
No. of Pins 8Pins
Output Current 3A
Output Voltage Min 1.285V
Output Voltage Max 37V
Switching Frequency 500kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
Accuracy % 1.5%
Adjustable Output Voltage Max 1.311V
Adjustable Output Voltage Min 1.259V
Base Number 22673
Frequency 500kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Current Max 3A
Primary Input Voltage 42V
Supply Voltage Min 4.5V
Supply Voltage Typ 12V
Switch Output Current Isw Max 5.5A
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • SIMPLE SWITCHER® 4.5V to 42V, 3A Step-Down Voltage Reg. with Adjustable Soft-Start and Current Limit | Texas Instruments

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