LM2676SX-ADJ/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 ONresistance 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® power converter 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 and 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.