EZBoost 2A General Purpose Regulator
AOZ1905
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
L1
4.7µH
D1
VOUT
VIN
C1
10µF
IN
FSEL
SS
C4
GND
LX
R2
FB
R1
AOZ1905
C2
10µF
OFF
ON
EN
COMP
R3
C3
Figure 1. Typical Application Circuit
Rev. 1.5 December 2008
www.aosmd.com
Page 1 of 16
AOSMD [ ALPHA & OMEGA SEMICONDUCTORS ]
