aoz1242 Alpha & Omega Semiconductor, aoz1242 Datasheet - Page 3

• Manufacturer Part Number: aoz1242
• Description: Ezbucktm 3a Simple Buck Regulator
• Manufacturer: Alpha & Omega Semiconductor

Block Diagram
Absolute Maximum Ratings
Exceeding the Absolute Maximum Ratings may damage the device.
Note:
1. Devices are inherently ESD sensitive, handling precautions are
Supply Voltage (V
LX to GND
EN to GND
FB to GND
COMP to GND
BST to GND
VBIAS to GND
Junction Temperature (T
Storage Temperature (T
ESD Rating
required. Human body model rating: 1.5k
Rev. 1.4 November 2010
VBIAS
COMP
EN
FB
(1)
Parameter
0.8V
Reference
IN
& Bias
0.2V
)
+5V
S
J
)
)
+
–
& POR
UVLO
+
–
EAmp
Comparator
Frequency
GM = 200µA / V
Foldback
Softstart
Ω
Regulator
in series with 100pF.
5V LDO
-0.7V to V
-0.3V to V
-65°C to +150°C
Rating
370kHz / 24kHz
-0.3V to 6V
-0.3V to 6V
-0.3V to 6V
Oscillator
+
–
+
IN
IN
V
Comp
+150°C
PWM
LX
www.aosmd.com
+0.3V
+0.3V
34V
+6V
2kV
Recommended Operating Conditions
The device is not guaranteed to operate beyond the
Recommended Operating Conditions.
Note:
2. The value of
Control
Supply Voltage (V
Output Voltage Range
Ambient Temperature (T
Package Thermal Resistance (Θ
ILimit
PWM
Logic
FR-4 board with 2oz. Copper, in a still air environment with T
25°C. The value in any given application depends on the user's spe-
cific board design.
OTP
SO-8
DFN-8
Θ
Parameter
JA
is measured with the device mounted on 1-in
IN
)
ISen
A
+
–
)
JA
)
(2
Q1
Q2
)
GND
VIN
-40°C to +85°C
AOZ1242
Rating
Page 3 of 18
BST
LX
4.5V to 32V
0.8V to V
105°C/W
53°C/W
A
=
2
IN