AOZ1905 Datasheet, PDF (1/16 Pages) Alpha & Omega Semiconductors – EZBoost 2A General Purpose Regulator

AOZ1905
EZBoost 2A General Purpose Regulator
General Description
The AOZ1905 EZBoost is a high-performance, current-
mode, constant frequency step-up regulator with internal
MOSFET. 600kHz/1.2MHz switching frequency allows
the use of low-profile inductor and capacitors. The
current-mode control ensures easy loop compensation
and fast transient response. The AOZ1905 works from
a 2.7V to 5.5V input voltage range and generates an
output voltage as high as 24V. Other features include
input under-voltage lockout, cycle-by-cycle current limit,
thermal shutdown and soft-start.
The AOZ1905 is available in a tiny 3mm x 3mm 10-pin
DFN package and MSOP8 package and is rated over a
-40°C to +85°C operating temperature range.
Features
● 2.7V to 5.5V input voltage range
● Adjustable output up to 24V
● 600kHz/1.2MHz constant switching frequency
● Cycle-by-cycle current limit
● Thermal overload protection
● Programmable Soft-start
● Small 3mm x 3mm DFN 10L package
● MSOP-8L package
Applications
● LCD TV
● LCD Monitors
● Notebook Displays
● PCMCIA Cards
● Hand-Held Devices
● GPS Power
● TV Tuner
Typical Application
VIN
C1
10µF
C4
IN
FSEL
SS
OFF ON
EN
L1
4.7µH
D1
LX
FB
AOZ1905
GND
COMP
VOUT
R2
C2
10µF
R1
R3
C3
Rev. 1.5 December 2008
Figure 1. Typical Application Circuit
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