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SIMPLE SWITCHER® 8V to 40V, 3A Low Component Count Step-Down Regulator

Out of stock


Qty Price (USD)
1-99 4.372
100-249 3.564
250-999 2.801
1,000+ 2.376

Quality information

RoHS Exempt
REACH Affected
Lead finish / Ball material SN
MSL rating / Peak reflow Level-3-245C-168 HR
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins TO-263 (KTW) | 7
Package qty | Carrier: 45 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM2676

  • New product available: LMR33630 36-V, 3-A, 400-kHz synchronous converter
  • Efficiency up to 94%
  • Simple and easy to design with (using off-the-shelf external components)
  • 150-mΩ DMOS output switch
  • 3.3-V, 5-V, 12-V Fixed output and adjustable
    (1.2 V to 37 V) versions
  • 50-µA Standby current when switched OFF
  • ±2% Maximum output tolerance over full line and load conditions
  • Wide input voltage range: 8 V to 40 V
  • 260-KHz Fixed frequency internal oscillator
  • –40 to 125°C Operating junction temperature range

Description for the LM2676

The LM2676 series of regulators are monolithic integrated circuits which provide all ofthe active functions for a step-down (buck) switching regulator capable of driving up to 3-A loadswith excellent line and load regulation characteristics. High efficiency (>90%) is obtainedthrough the use of a low ON-resistance DMOS power switch. The series consists of fixed outputvoltages of 3.3-V, 5-V, and 12-V and an adjustable output version.

The SIMPLE SWITCHER® concept providesfor a complete design using a minimum number of external components. A high fixed frequencyoscillator (260 kHz) allows the use of physically smaller sized components. A family of standardinductors for use with the LM2676 are available from several manufacturers to greatly simplify thedesign process.

The LM2676 series also has built-in thermal shutdown, current limiting and an ON/OFFcontrol input that can power down the regulator to a low 50‑µA quiescent current standby condition.The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a±11% tolerance.

The new product,LMR33630,offers reduced BOM cost, higher efficiency, and an 85% reduction in solution size among many otherfeatures. See theDeviceComparison Table to compare specs. Start aWEBENCHDesign with LMR33630.

Out of stock


Qty Price (USD)
1-99 4.372
100-249 3.564
250-999 2.801
1,000+ 2.376

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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