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AOZ2263QI-15 Dataheets PDF



Part Number AOZ2263QI-15
Manufacturers Alpha & Omega Semiconductors
Logo Alpha & Omega Semiconductors
Description 28V/12A Synchronous Regulator
Datasheet AOZ2263QI-15 DatasheetAOZ2263QI-15 Datasheet (PDF)

AOZ2263QI-15 28V/12A Synchronous EZBuckTM Regulator General Description The AOZ2263QI-15 is a high-efficiency, easy-to-use DC/ DC synchronous buck regulator that operates up to 28V. The device is capable of supplying 12A of continuous output current with an output voltage adjustable down to 0.8V (±1.0%). A proprietary constant on-time PWM control with input feed-forward results in ultra-fast transient response while maintaining relatively constant switching frequency over the entire input volta.

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AOZ2263QI-15 28V/12A Synchronous EZBuckTM Regulator General Description The AOZ2263QI-15 is a high-efficiency, easy-to-use DC/ DC synchronous buck regulator that operates up to 28V. The device is capable of supplying 12A of continuous output current with an output voltage adjustable down to 0.8V (±1.0%). A proprietary constant on-time PWM control with input feed-forward results in ultra-fast transient response while maintaining relatively constant switching frequency over the entire input voltage range. The on-time can be externally programmed up to 2.6µs. The device features multiple protection functions such as VCC under-voltage lockout, cycle-by-cycle current limit, output over-voltage protection, short-circuit protection, and thermal shutdown. The AOZ2263QI-15 is available in a 4mm x 4mm QFN22L package and is rated over a -40°C to +85°C ambient temperature range. Features  Wide input voltage range – 2.7V to 28V  12A continuous output current  Output voltage adjustable down to 0.8V (±1.0%)  Low RDS(ON) internal NFETs – 18m high-side – 7m low-side  Constant On-Time with input feed-forward  Programmable on-time up to 2.6µs  Selectable PFM light load operation  Ceramic capacitor stable  Adjustable soft start  Ripple reduction  Power Good output  Integrated bootstrap diode  Cycle-by-cycle current limit  Short-circuit protection  Thermal shutdown  Thermally enhanced 4mm x 4mm QFN-22L package Applications  Portable computers  Compact desktop PCs  Servers  Graphics cards  Set-top boxes  LCD TVs  Cable modems  Point-of-load DC/DC converters  Telecom/Networking/Datacom equipment Rev. 2.0 March 2019 www.aosmd.com Page 1 of 16 AOZ2263QI-15 Typical Application RTON 5V R3 100kΩ Power Good C4 4.7μF Off On CSS TON IN BST VCC AOZ2263QI-15 PGOOD LX EN PFM SS FB AGND PGND C5 0.1μF L1 1μH Input 2.7V to 28V C2 22μF Output 1.05V, 12A R2 C3 88μF R1 Power Ground Analog Ground Rev. 2.0 March 2019 www.aosmd.com Page 2 of 16 Ordering Information Part Number AOZ2263QI-15 Ambient Temperature Range -40°C to +85°C Package 22-Pin 4mm x 4mm QFN AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information. Pin Configuration AOZ2263QI-15 Environmental Green Product PGND LX BST VCC SS 22 21 20 19 18 PGOOD 1 EN 2 PFM 3 IN AGND 4 FB 5 TON 6 17 LX 16 LX 15 PGND LX 14 PGND 13 PGND 12 PGND 789 10 11 LX LX IN IN IN 22-Pin 4mm x 4mm QFN (Top View) Rev. 2.0 March 2019 www.aosmd.com Page 3 of 16 AOZ2263QI-15 Pin Description Pin Number Pin Name 1 PGOOD 2 3 4 5 6 7, 8, 9 12, 13, 14, 15, 19 10, 11, 16, 17, 18 20 21 22 EN PFM AGND FB TON IN PGND LX BST VCC SS Pin Function Power Good Signal Output. PGOOD is an open-drain output used to indicate the status of the output voltage. It is internally pulled low when the output voltage is 15% lower than the nominal regulation voltage for or 20% higher than the nomin.


NJW4832 AOZ2263QI-15 AOZ2003


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