AOZ1038PI_3

AOZ1038PI_3 Datasheet

AOZ1038

Part	Datasheet
AOZ1038PI_3	AOZ1038PI_3 (pdf)

Related Parts	Information
AOZ1038PI_2	AOZ1038PI_2
AOZ1038DI-1_2	AOZ1038DI-1_2
AOZ1038DI-1	AOZ1038DI-1

PDF Datasheet Preview
AOZ1038 EZBuck 6 A Synchronous Buck Regulator Not Recommended For New Designs The AOZ1038 is a high efficiency, easy to use, 6 A V to 18 V operating input voltage range synchronous buck regulator. The AOZ1038 works from a 55 mΩ internal high-side switch and 12 mΩ internal V to 18 V input voltage range and provides up to 6 A of continuous output current with an output voltage adjustable down to V. The AOZ1038 is available in a 5x6 DFN-8 package or an exposed pad SO-8 package. Both are rated over a -40 °C to +85 °C ambient temperature range. Replacement Part AOZ3019DI low-side switch High efficiency up to 95 % s Internal soft start ign Active high power good state Output voltage adjustable to V s 6 A continuous output current De Fixed 450 kHz PWM operation Cycle-by-cycle current limit Pre-bias start-up ew Short-circuit protection Thermal shutdown N Thermally enhanced 5x6 DFN-8 and exposed pad r SO-8 packages Fo Applications Point-of-load DC/DC converters LCD TV d Set top boxes n DVD / Blu-ray players/recorders e Cable modems PCIe graphics cards omm Typical Application c VIN eC1 R22µF Not Ceramic EN AOZ1038 LX L1 2.2µH VOUT = 1.2V COMP AGND FB PGND R1 C2, C3, C4 22µF Ceramic Figure V 6 A Synchronous Buck Regulator Page 1 of 15 AOZ1038 Ordering Information Ambient Temperature Range Package AOZ1038DI AOZ1038PI -40 °C to +85 °C 5x6 DFN-8 Exposed Pad SO-8 AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information. Environmental Green Product Pin Configuration PGND 1 VIN 2 AGND 3 PAD LX 8 NC 7 NC 6 EN PGND 1 VIN 2 AGND 3 PAD LX igns 8 NC s 7 NC De6 EN 5 COMP w 5x6 DFN-8 e Top View 5 COMP Exposed Pad SO-8 Top View For N Pin Description d Pin Number de 5x6 DFN-8 n 1 e 2 Exposed SO-8 Not R 6 Pin Name PGND VIN AGND FB COMP EN Pin Function 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 the controller section. AGND needs to be electrically connected to PGND. 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 is not needed, connect it to VIN and do not leave it open. No Connect Pin. Pin 7 and 8 are not internally connected. Connect these two pins externally to LX and use them for better thermal performance. Exposed Pad Exposed Pad Switching Node. LX is the drain of the internal PFET. LX is used as the thermal pad of the power stage. Page 2 of 15

PDF Datasheet Preview

AOZ1038

EZBuck 6 A Synchronous Buck Regulator

Not Recommended For New Designs

The AOZ1038 is a high efficiency, easy to use, 6 A

V to 18 V operating input voltage range
synchronous buck regulator. The AOZ1038 works from a 55 mΩ internal high-side switch and 12 mΩ internal

V to 18 V input voltage range and provides up to 6 A of continuous output current with an output voltage adjustable down to V.

The AOZ1038 is available in a 5x6 DFN-8 package or an exposed pad SO-8 package. Both are rated over a -40 °C to +85 °C ambient temperature range.

Replacement Part AOZ3019DI
low-side switch High efficiency up to 95 %
s Internal soft start ign Active high power good state

Output voltage adjustable to V
s 6 A continuous output current De Fixed 450 kHz PWM operation

Cycle-by-cycle current limit

Pre-bias start-up
ew Short-circuit protection

Thermal shutdown

N Thermally enhanced 5x6 DFN-8 and exposed pad r SO-8 packages Fo Applications

Point-of-load DC/DC converters

LCD TV d Set top boxes n DVD / Blu-ray players/recorders e Cable modems

PCIe graphics cards
omm Typical Application c VIN eC1 R22µF

Not Ceramic

EN AOZ1038 LX

L1 2.2µH

VOUT = 1.2V

COMP

AGND

FB PGND

R1 C2, C3, C4 22µF Ceramic

Figure V 6 A Synchronous Buck Regulator

Page 1 of 15

AOZ1038
Ordering Information

Ambient Temperature Range

Package

AOZ1038DI AOZ1038PI
-40 °C to +85 °C
5x6 DFN-8 Exposed Pad SO-8

AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information.

Environmental Green Product

Pin Configuration

PGND 1 VIN 2

AGND 3

PAD LX
8 NC 7 NC 6 EN

PGND 1 VIN 2

AGND 3

PAD LX
igns 8 NC s 7 NC De6 EN
5 COMP
w 5x6 DFN-8 e Top View
5 COMP

Exposed Pad SO-8

Top View

For N Pin Description
d Pin Number
de 5x6 DFN-8 n 1 e 2

Exposed SO-8

Not R 6

Pin Name PGND VIN AGND FB COMP EN

Pin Function

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 the controller section. AGND needs to be electrically connected to PGND.

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 is not needed, connect it to VIN and do not leave it open.

No Connect Pin. Pin 7 and 8 are not internally connected. Connect these
two pins externally to LX and use them for better thermal performance.

Exposed Pad Exposed Pad

Switching Node. LX is the drain of the internal PFET. LX is used as the
thermal pad of the power stage.

Page 2 of 15

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AOZ1038PI_3 Datasheet file may be downloaded here without warranties.

Datasheet ID: AOZ1038PI_3 516308