AOZ1036PI_2

AOZ1036PI_2 Datasheet

AOZ1036

Part	Datasheet
AOZ1036PI_2	AOZ1036PI_2 (pdf)

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AOZ1036 EZBuck 5A Synchronous Buck Regulator Not Recommended For New Designs The AOZ1036 is a high efficiency, easy to use, 5A z 4.5V to 18V operating input voltage range synchronous buck regulator. The AOZ1036 works from z Synchronous Buck 55mΩ internal high-side switch 4.5V to 18V input voltage range, and provides up to 5A of continuous output current with an output voltage adjustable down to 0.8V. The AOZ1036 comes in both a 5x4 DFN-8 and an exposed pad SO-8 package and is rated over a -40°C to +85°C ambient temperature range. Replacement Part AOZ3018PI and 19mΩ Internal low-side switch z High efficiency up to 95% s z Internal soft start n z Output voltage adjustable to 0.8V ig z 5A continuous output current s z Fixed 500kHz PWM operation e z Cycle-by-cycle current limit D z Pre-bias start-up z Short-circuit protection w z Thermal shutdown e z Thermally enhanced 5x4 DFN-8 and exposed pad SO-8 packages r N Applications o z Point of load DC/DC converters Fz LCD TV dz Set top boxes e z DVD / Blu-ray players/recorders d z Cable modems n z PCIe graphics cards me Typical Application om VIN c C1 e22µF Not RCeramic EN AOZ1036 LX L1 4.7µH VOUT COMP C2, C3 22µF Ceramic AGND PGND Figure 3.3V 5A Synchronous Buck Regulator Page 1 of 17 AOZ1036 Ordering Information Part Number AOZ1036DI AOZ1036PI Ambient Temperature Range -40°C to +85°C Package 5x4 DFN-8 Exposed Pad SO-8 Environmental Green Product AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit for additional information. Pin Configuration PGND 1 VIN 2 AGND 3 LX GND 8 LX 7 LX 6 EN PGND 1 VIN 2 AGND 3 PAD LX igns 8 NC s 7 NC De6 EN 5 COMP w 5x4 DFN-8 e Top View 5 COMP Exposed Pad SO-8 Top View r N Pin Description o Pin Number d F 5x4 DFN-8 e 1 d 2 Exposed Pad SO-8 R 7, 8 Not 7, 8 Pin Name PGND VIN AGND COMP EN LX NC Pin Function Power ground. Electrically needs to be connected to AGND. Supply voltage input. When VIN rises above the UVLO threshold the device starts up. Reference connection for controller section. Also used as thermal connection for controller section. Electrically needs to be connected to PGND. The FB pin is used to determine the output voltage via a resistor divider between the output and GND. External loop compensation pin. The enable pin is active high. Connect it to VIN if not used and do not leave it open. PWM output connection to inductor. No Connect. Pin 7 and 8 are not internally connected. Connect these two pins externally to LX and use them for better thermal performance. Page 2 of 17 Block Diagram

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AOZ1036

EZBuck 5A Synchronous Buck Regulator

Not Recommended For New Designs

The AOZ1036 is a high efficiency, easy to use, 5A
z 4.5V to 18V operating input voltage range
synchronous buck regulator. The AOZ1036 works from
z Synchronous Buck 55mΩ internal high-side switch
4.5V to 18V input voltage range, and provides up to 5A of continuous output current with an output voltage adjustable down to 0.8V.

The AOZ1036 comes in both a 5x4 DFN-8 and an exposed pad SO-8 package and is rated over a -40°C to +85°C ambient temperature range.

Replacement Part AOZ3018PI
and 19mΩ Internal low-side switch z High efficiency up to 95%
s z Internal soft start n z Output voltage adjustable to 0.8V ig z 5A continuous output current s z Fixed 500kHz PWM operation e z Cycle-by-cycle current limit D z Pre-bias start-up
z Short-circuit protection
w z Thermal shutdown e z Thermally enhanced 5x4 DFN-8 and exposed pad

SO-8 packages
r N Applications o z Point of load DC/DC converters Fz LCD TV dz Set top boxes e z DVD / Blu-ray players/recorders d z Cable modems n z PCIe graphics cards
me Typical Application om VIN c C1 e22µF

Not RCeramic

EN AOZ1036 LX

L1 4.7µH

VOUT

COMP

C2, C3
22µF

Ceramic

AGND

PGND

Figure 3.3V 5A Synchronous Buck Regulator

Page 1 of 17

AOZ1036
Ordering Information

Part Number AOZ1036DI AOZ1036PI

Ambient Temperature Range -40°C to +85°C

Package 5x4 DFN-8 Exposed Pad SO-8

Environmental Green Product

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

Pin Configuration

PGND 1 VIN 2

AGND 3

LX GND
8 LX 7 LX 6 EN

PGND 1 VIN 2

AGND 3

PAD LX
igns 8 NC s 7 NC De6 EN
5 COMP
w 5x4 DFN-8 e Top View
5 COMP

Exposed Pad SO-8

Top View
r N Pin Description
o Pin Number
d F 5x4 DFN-8 e 1 d 2

Exposed Pad SO-8

R 7, 8

Not 7, 8

Pin Name PGND VIN

AGND

COMP EN

LX NC

Pin Function

Power ground. Electrically needs to be connected to AGND.

Supply voltage input. When VIN rises above the UVLO threshold the device starts up.

Reference connection for controller section. Also used as thermal connection for controller section. Electrically needs to be connected to PGND.

The FB pin is used to determine the output voltage via a resistor divider between the output and GND.

External loop compensation pin.

The enable pin is active high. Connect it to VIN if not used and do not leave it open.

PWM output connection to inductor.

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

Page 2 of 17

Block Diagram

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Datasheet ID: AOZ1036PI_2 516306