■ Product Introduction
LM2674 series is a DC/DC switching buck converter
controlled by a fixed frequency of 260kHz PWM.It is
mainly composed of internal frequency compensation,
fixed frequency oscillator, built-in overcurrent protection,
power switch control and other circuits. It can drive
500MA load with high efficiency, low ripple, good linearity
and load adjustment ability.Only a few external
components are needed to realize the function of DC/DC
voltage reduction and stabilization, which is very simple

Product features
● Built in overtemperature shutdown function
● Built in overcurrent protection function
● Internal integrated efficient power switch
● Good linearity and load adjustment capability
● ON/OFF pin with hysteresis function
● TTL shutdown capability
● high efficiency
● Simple periphery
● Wide input voltage range: 7V~40V
● Fixed output voltage: 3.3V, 5V, 12V, etc
● Adjustable output voltage range: 1.21V~37V
(adjustable)
● High precision output: ± 2%
● Fixed switching frequency: 260 kHz
● Maximum output current capacity: 500mA
● Minimum linear drop voltage drop: 1.5V
● Package form: SOP-8
and practical.PWM control circuit can adjust the duty
cycle from 0 according to the load To 100% to achieve
high work efficiency.It has an external enabling control
opening function, which can realize the controllable
switch between standby and work, making the application
more flexible.