LM2676S-12/NOPB

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LM2676S-12/NOPB

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

Packaging

Package | PIN: KTW | 7
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $4.73
10-24 $4.26
25-99 $3.97
100-249 $3.56
250-499 $3.33
500-749 $2.89
750-999 $2.51
1000+ $2.16

Features

  • 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

Texas Instruments  LM2676S-12/NOPB

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

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

The LM2676 series also has built-in thermal shutdown, current limiting and an ON/OFF control 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.