AOZ3015PI. Z3015PI Datasheet
EZBuck™ 3 A Synchronous Buck Regulator
The AOZ3015PI is a high efficiency, easy to use, 3 A
synchronous buck regulator. The AOZ3015PI works from
4.5 V to 18 V input voltage range, and provides up to 3 A
of continuous output current with an output voltage
adjustable down to 0.8 V.
The AOZ3015PI comes in an exposed pad SO-8
package and is rated over a -40 °C to +85 °C operating
ambient temperature range.
4.5 V to 18 V operating input voltage range
Synchronous Buck: 85 mΩ internal high-side switch
and 50 mΩ internal low-side switch (at 12 V)
PEM (pulse energy mode) enables >85% efficiency
with IOUT = 10 mA (VIN = 12 V, VOUT = 5 V)
350 µA supply current under typical application
Up to 95 % efficiency
Output voltage adjustable to 0.8 V
3 A continuous output current
500 kHz PWM operation
Cycle-by-cycle current limit
Exposed pad SO-8 package
Point of load DC/DC converters
Set top boxes
DVD and Blu-ray players/recorders
Figure 1. 3 A Synchronous Buck Regulator, Fs = 500 kHz
Rev. 2.0 July 2013
Efficiency (VIN = 12V) vs. Load Current
Load Current (A)
Page 1 of 13
Ambient Temperature Range
-40 °C to +85 °C
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information.
Exposed Pad SO-8
Power ground. PGND needs to be electrically connected to AGND.
Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high,
the device starts up.
Analog ground. AGND is the reference point for controller section. AGND needs to be
electrically connected to PGND.
Internal LDO output.
Feedback input. The FB pin is used to set the output voltage via a resistive voltage divider
between the output and AGND.
External loop compensation pin. Connect a RC network between COMP and AGND to
compensate the control loop.
Enable pin. Pull EN to logic high to enable the device. Pull EN to logic low to disable the
device. If on/off control in not needed, connect EN to VIN and do not leave it open.
VOUT sense pin for protection purposes.
Switching node. LX is the drain of the internal power FETs. LX is used as the thermal pad
of the power stage.
Rev. 2.0 July 2013
Page 2 of 13