AP7363 Datasheet, PDF (9/14 Pages) Diodes Incorporated – 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR

AP7363
1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT
ULTRA-LOW DROPOUT LINEAR REGULATOR
Application Note (cont.)
Output Noise
This is the integrated value of the output noise over a
specified frequency range. Input voltage and output load
current are kept constant during the measurement.
Results are expressed in μVrms or μV √Hz.
The AP7362 is a low noise regulator and needs no
external noise reduction capacitor. Output voltage noise
is typically 100μVrms overall noise level between 100 Hz
and 100 kHz
Noise is specified in two ways:
Output noise density is the RMS sum of all noise
sources, measured at the regulator output, at a specific
frequency (measured with a 1Hz bandwidth). This type of
noise is usually plotted on a curve as a function of
frequency.
Output noise voltage is the RMS sum of spot noise over
a specified bandwidth. Spot noise is measured in units
μV/√Hz or nV/√Hz and total output noise is
measured in μV(rms). The primary source of noise in
low-dropout regulators is the internal reference.
Power Dissipation
The device power dissipation and proper sizing of the
thermal plane that is connected to the thermal pad is
critical to avoid thermal shutdown and ensure reliable
operation. Power dissipation of the device depends on
input voltage and load conditions and can be calculated
by:
P_D = (V_IN - V_OUT) X I_OUT
The maximum power dissipation, handled by the device,
depends on the junction to ambient thermal resistance,
and maximum ambient temperature, which can be
calculated by the equation in the following:
PD _{_ max}
=
(+150°C - TA )
R_θJA
Ordering Information
AP 7363 - XX XX - X
Output
Blank : ADJ
10 : _1.0V
12 : _1.2V
15 : _1.5V
18 : _1.8V
25 : _2.5V
33 : _3.3V
Package
HA : U-DFN2030-8
SP : SO-8EP
E : SOT223-3L
Packing
7/13 : Tape & Reel
Device
Package Code
Packaging
(Note 7 & 8)
7”/13” Tape and Reel
Quantity
Part Number Suffix
AP7363-XXHA-7
HA
U-DFN2030-8
3000/Tape & Reel
-7
AP7363-XXSP-13
SP
SO-8EP
2500/Tape & Reel
-13
AP7363-XXE-13
E
SOT223-3L
2500/Tape & Reel
-13
Notes: 7. SOT223-3L is only available with fixed output version.
8. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP7363
Document number: DS35059 Rev. 2 - 2
9 of 14
www.diodes.com
July 2011
© Diodes Incorporated