LM22671MR-5.0/NOPB Part Information

Details for LM22671MR-5.0/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

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Part Description

The LM22671 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 500 mA 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). An adjustable soft-start feature is provided through the selection of a single external capacitor. The LM22671 device also has built-in thermal shutdown and current limiting to protect against accidental overloads. The LM22671 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

  • 200 mu2126 N-Channel MOSFET
  • 500 kHz Default Switching Frequency
  • Adjustable Soft-Start
  • Adjustable Switching Frequency and Synchronization
  • Fully WEBENCHu00ae Enabled
  • Integrated Boot-Strap Diode
  • Internally Compensated Voltage Mode Control
  • LM22671-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (u201340u00b0C to +125u00b0C Operating Junction Temperature)
  • Output Voltage Options: -ADJ (Outputs as Low as 1.285 V) -5.0 (Output Fixed to 5 V)
  • Precision Enable Pin
  • SO PowerPADu2122 (Exposed Pad)
  • Stable with Low ESR Ceramic capacitors
  • 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
DC / DC Converter IC Case HSOP
No. of Pins 8Pins
Output Current 500mA
Output Voltage Nom. 5V
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)
RoHS Compliant

Alternative Part Descriptions

  • DC/DC CONV, BUCK, 500KHZ, HSOP-8 | Newark Electronics
  • Conv DC-DC Single Step Down 4.5V to 42V 8-Pin PSOP EP Rail | Avnet America
  • SIMPLE SWITCHER® 4.5V to 42V, 500mA Step-Down Voltage Regulator with Adjustable Frequency | Texas Instruments

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