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TI LM2674MX-3.3/NOPB product image
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TI LM2674MX-3.3/NOPBRoHS

Manufacturer
TI
MPN
LM2674MX-3.3/NOPB
LCSC Part #
C2070634
Packaging
SOIC-8
Customer #
Key Attributes
SIMPLE SWITCHER Power Converter High Efficiency 500-mA Step-Down Voltage Regulator
Datasheetpdf iconTI LM2674MX-3.3/NOPB
In-Stock: 2,996
2,996 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 1.3975$ 1.40
10+$ 1.274$ 12.74
30+$ 1.196$ 35.88
100+$ 1.1164$ 111.64
500+$ 1.0806$ 540.30
1,000+$ 1.066$ 1066.00
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTI
PackagingSOIC-8
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching260kHz
FunctionStep-down type
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Overcurrent Protection
TopologyBuck
Output TypeFixed
Operating Voltage6.5V~40V
Switch tube (built-in/external)Built-in
Output Voltage3.3V
Output Current500mA
Quiescent Current3.6mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The LM2674 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation and a fixed frequency oscillator. The LM2674 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of its very high efficiency (>90%), the copper traces on the printed-circuit board are the only heat sinking required. A family of standard inductors for use with the LM2674 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies. Other features include an ensured ±1.5% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50-μA standby current. The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions.

Features

AI Translation
  • Efficiency up to 96%
  • Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Packages
  • Simple and Easy to Design With
  • Requires Only 5 External Components
  • Uses Readily Available Standard Inductors
  • 3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.21 V to 37 V
  • ±1.5% Maximum Output Voltage Tolerance Over Line and Load Conditions
  • Ensured 500-mA Output Load Current
  • 0.25-Ω DMOS Output Switch
  • Wide Input Voltage Range: 8 V to 40 V
  • 260-kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby Mode
  • Thermal Shutdown and Current Limit Protection

Applications

AI Translation
  • Simple High Efficiency (>90%) Step-Down (Buck) Regulators
  • Efficient Preregulator for Linear Regulators
  • Positive-to-Negative Converters