Datasheet Texas Instruments LM2833ZMY/NOPB — 数据表

LM2833
www.ti.com SNVS505E – MAY 2008 – REVISED APRIL 2013 LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator
Check for Samples: LM2833 FEATURES DESCRIPTION The LM2833 regulator is a monolithic, high frequency,
PWM step-down DC/DC converter available in a 10pin WSON or MSOP-PowerPAD package. It contains
all the active functions to provide local DC/DC
conversion with fast transient response and accurate
regulation in the smallest possible PCB area. With a
minimum of external components, the LM2833 is
easy to use. The ability to drive 3.0A loads with an
internal 56 mΩ PMOS switch using state-of-the-art
0.5Вµm BiCMOS technology results in the best power
density available. The world-class control circuitry
allows on-times as low as 30ns, thus supporting
exceptionally high frequency conversion over the
entire 3V to 5.5V input operating range down to the
minimum output voltage of 0.6V. Switching frequency
is internally set to 1.5MHz or 3.0MHz, allowing the
use of extremely small surface mount inductors and
capacitors. Even though the operating frequency is
high, efficiencies up to 93% are easy to achieve.
External shutdown is included, featuring an ultra-low
stand-by current of 300nA. The LM2833 utilizes peak
current-mode control and internal compensation to …