AOZ1605 Datasheet, PDF (1/15 Pages) Alpha & Omega Semiconductors – 500 mA / 3 MHz EZBuck Regulator

AOZ1605
500 mA / 3 MHz EZBuck Regulator
General Description
The AOZ1605 is a high-performance, easy-to-use Buck
regulator. The 3 MHz switching frequency, low quiescent
current and small package size make it an ideal choice
for portable applications. The AOZ1605 has a patented
light load mode architecture allowing up to 85% efficiency
at 1 mA load currents, enabling longer standby times in
battery operated systems.
The AOZ1605 operates from a 2.5 V to 5.5 V input
voltage range and provides up to 500 mA of output
current with an output voltage adjustable down to 0.6 V.
The AOZ1605 is available in a tiny 2 mm x 2 mm 8-pin
DFN package and is rated over a -40 °C to +85 °C
ambient temperature range.
Features
 2.5 V to 5.5 V input voltage range
 30 A quiescent current
 0.05 A shutdown current
 Output voltage adjustable to 0.6 V
 Fixed output voltages available
 ± 1.5% initial accuracy
 Up to 500 mA continuous output current
 3 MHz constant frequency operation
 Low drop-out operation: 100% duty cycle
 Cycle-by-cycle current-limit
 Thermal overload protection
 Excellent load transient response
 Internal soft-start
 Tiny 2 mm x 2 mm DFN-8 package
Applications
 Smart phones
 Personal media players
 MP3 players
 Digital still cameras
 Wireless modems and LANs
 Portable USB devices
Typical Application
VIN = 2.5V to 5.5V
Off On
AOZ1605DI
IN
LX
C1
10µF
PGND
FB
L1
1.0µH
EN
AGND
VOUT = 500mA
R1
C2
10µF
R2
Rev. 1.2 June 2012
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