Voltage Regulators - Peak Atlas DCA75 Pro User Manual

Peak Atlas DCA Pro User Guide

Voltage Regulators

The DCA Pro is able to identify many types of regulator,
typically regulators with outputs less than 8V, depending
on current requirements.
When a regulator is identified, its pinout, output voltage, quiescent current
Negative voltage regulators (such as the popular 79L05) will be shown with a
negative V figure.
OUT
Some voltage regulators are not stable when used outside of their
intended circuitry (decoupling capacitors, proper loads etc). The
DCA Pro may not be able to identify the regulator correctly if it is not
stable during analysis.
The displayed drop-out voltage (V
between input and output of the regulator to enable voltage regulation to
take place. Common regulators have a drop-out voltage of around 2V.
Many "Low drop-out" regulators may have a drop-out voltage of 0.5V
or less. The DCA Pro measures drop-out at very low load currents on
the regulator's output (typically less than 1mA). The drop-out voltage of
a regulator increases significantly with load current.
consumption and drop-out voltage are
displayed.
The stability of the output voltage
measurement is also displayed (d
to help you assess if the DCA Pro has
experienced a stable test or not, it is not
a measure of the regulator's output
ripple or noise.
) is the voltage that is required
DO
Page 29
June 2019 – Rev 1.7
VOUT
)