aoz1905 Alpha & Omega Semiconductor, aoz1905 Datasheet - Page 2

• Manufacturer Part Number: aoz1905
• Description: Ezboost 2a General Purpose Regulator
• Manufacturer: Alpha & Omega Semiconductor

Ordering Information
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Pin Configuration
Pin Description
All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards.
Parts marked as Green Products (with “L” suffix) use reduced levels of Halogens, and are also RoHS compliant.
Rev. 1.4 May 2008
Pin Name
Part Number
COMP
AOZ1905DI
AOZ1905FI
FSEL
GND
EN
FB
LX
SS
IN
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DFN-10
4, 5
6, 7
10
1
2
3
8
9
COMP
Pin Number
Operating Temperature Range
GND
EN
FB
1
2
3
4
MSOP-8
-40°C to +85°C
-40°C to +85°C
1
2
3
4
5
6
7
8
MSOP-8
(Top View)
Compensation Pin. COMP is the output of the internal transconductance error
amplifier. Connect a RC network from COMP to GND to compensate the loop.
Feedback Input. Connect a resistive divider between the boost regulator output
and ground with the center tap connected to FB to set output voltage.
Enable Input. Pull EN high to enable the boost regulator and pull EN low to dis-
able the regulator.
System Ground.
Boost Regulator Switching Node.
Input Supply Pin.
Frequency Select Pin. The switching frequency is 1.2MHz when FSEL is
connected to IN, and 600kHz when FSEL is connected to ground.
Soft-Start Pin. Connect a capacitor from SS to GND to set the soft-start period.
www.aosmd.com
8
7
6
5
SS
FSEL
IN
LX
for additional information.
COMP
GND
GND
EN
FB
3x3 DFN-10
Package
1
2
3
4
5
MSOP-8
Pin Function
(Top View)
DFN-10
10
9
8
7
6
SS
FSEL
IN
LX
LX
Environmental
RoHS Compliant
Green
AOZ1905
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