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| AOZ1214 Datasheet, PDF (1/16 Pages) Alpha & Omega Semiconductors – EZBuck 3A™ Simple Buck Regulator with Linear Controller | |||
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AOZ1214
EZBuck 3A⢠Simple Buck Regulator
with Linear Controller
General Description
The AOZ1214 is a high efficiency, simple to use, buck
regulator plus one linear regulator controller optimized for
a variety of applications.
The AOZ1214 works from a 4.5V to 28V wide input
voltage range. The buck regulator provides up to 3A of
continuous output current. Each output voltage is
adjustable down to 0.8V. The buck regulator and LDO
can be enabled independently.
The AOZ1214 is available in a 4x3 DFN-12 package and
can operate over a -40°C to +85°C ambient temperature
range.
Features
z 4.5V to 28V operating input voltage range
z Integrated linear regulator controller
z 40 m⦠internal NFET, efficiency: up to 95%
z Internal soft start
z Each output voltage adjustable down to 0.8V
z 3A continuous output current
z Fixed 370 kHz PWM operation
z Cycle-by-cycle current limit
z Short-circuit protection
z Thermal shutdown
z Small size 4x3 DFN-12 package
z Independent enable input for Buck and LDO
Applications
z Point of load DC/DC conversion
z Set top boxes
z LCD Monitors & TVs
z Cable modems
z Telecom/Networking/Datacom equipment
Typical Application
VIN
C1
22µF
C5
0.1µF
VOUT1
C6
1µF
VOUT2
R3
10k
C7
4.7µF
VIN EN2 EN1 BS
LDRV
LX
AOZ1214
FB1
FB2
VBIAS COMP GND
R4
8.06k
RC
C4
30k
1µF
CC
2.2nF
L1
6.8µH
VOUT1
R1
31.6k
R2
10k
C2, C3
22µF x 2
Rev. 1.0 December 2010
Figure 1. Typical Application Circuit
www.aosmd.com
Page 1 of 16
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