AOZ1034DI Alpha & Omega Semiconductor Inc, AOZ1034DI Datasheet - Page 12

• Manufacturer Part Number: AOZ1034DI
• Description: IC BUCK SYNC ADJ 4A 8DFN
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of AOZ1034DI

• Featured Product: The AOZ103x Family Synchronous Buck Regulator
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 18 V
• Current - Output: 4A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-VDFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 785-1254-2

The AOZ1034DI comes in a standard 5x4 DFN-8 or
exposed pad SO-8 package. Several layout tips are listed
below for the best electric and thermal performance.
1. The LX pins are connected to internal PFET and
2. Do not use thermal relief connection to the VIN and
Rev. 1.1 September 2010
NFET drains. They are low resistance thermal
conduction path and most noisy switching node.
Connected a large copper plane to LX pin to help
thermal dissipation. For full load (4A) application,
also connect the LX pads to the bottom layer by
thermal vias to enhance the thermal dissipation.
the PGND pin. Pour a maximized copper area to the
PGND pin and the VIN pin to help thermal
dissipation.
www.aosmd.com
3. Input capacitor should be connected to the VIN pin
4. A ground plane is preferred. If a ground plane is not
5. Make the current trace from LX pins to L to Co to the
6. Pour copper plane on all unused board area and
7. Keep sensitive signal trace far away from the LX
and the PGND pin as close as possible.
used, separate PGND from AGND and connect them
only at one point to avoid the PGND pin noise
coupling to the AGND pin.
PGND as short as possible.
connect it to stable DC nodes, like VIN, GND or
VOUT.
pins.
AOZ1034
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