Sample &
Buy Product
Folder Support &
Community Tools &
Software Technical
Documents Reference
Design LM2831
SNVS422D – AUGUST 2006 – REVISED SEPTEMBER 2015 LM2831 High-Frequency 1.5-A Load — Step-Down DC-DC Regulator
1 Features 3 Description The LM2831 regulator is a monolithic, highfrequency, PWM step-down DC-DC converter in a 5pin SOT-23 and a 6-Pin WSON package. The
LM2831 provides 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
LM2831 is easy to use. The ability to drive 1.5-A
loads with an internal 130-mΩ PMOS switch using
state-of-the-art 0.5-Вµm BiCMOS technology results in
the best power density available. The world-class
control circuitry allows on-times as low as 30 ns, thus
supporting exceptionally high frequency conversion
over the entire 3 V to 5.5 V input operating range,
down to the minimum output voltage of 0.6 V.
Switching frequency is internally set to 550 kHz, 1.6
MHz, or 3 MHz, allowing the use of extremely small …
