AOZ1212AI Alpha & Omega Semiconductor Inc, AOZ1212AI Datasheet - Page 3

• Manufacturer Part Number: AOZ1212AI
• Description: IC 3A BUCK REG 8-SOIC
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck)r

Specifications of AOZ1212AI

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 27 V
• Current - Output: 3A
• Frequency - Switching: 370kHz
• Voltage - Input: 4.5 ~ 27 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: 785-1159-2

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: Human Body Model
required. Human body model rating: 1.5k
Rev. 1.7 November 2010
COMP
VBIAS
EN
FB
Parameter
IN
0.8V
)
Reference
& Bias
0.2V
S
J
)
)
+5V
+
–
& POR
UVLO
+
–
EAmp
(1)
Comparator
Frequency
GM = 200µA/V
Foldback
Softstart
Ω
in series with 100pF.
Regulator
5V LDO
-0.7V to V
-0.3V to V
-65°C to +150°C
Rating
-0.3V to 6V
-0.3V to 6V
-0.3V to 6V
370kHz/24kHz
IN
IN
V
+150°C
LX
www.aosmd.com
Oscillator
+
–
+
+0.3V
+0.3V
Comp
PWM
30V
+6V
2kV
Recommended Operating Conditions
The device is not guaranteed to operate beyond the Recom-
mended Operating Conditions.
Note:
2. The value of
Supply Voltage (V
Output Voltage Range
Ambient Temperature (T
Package Thermal Resistance (Θ
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.
Control
SO-8
ILimit
PWM
Logic
DFN-8
OTP
Θ
Parameter
JA
is measured with the device mounted on 1-in
IN
)
A
ISen
)
+
–
JA
)
(2
)
Q1
Q2
GND
VIN
0.8V to 0.85*V
-40°C to +85°C
AOZ1212
Rating
Page 3 of 18
4.5V to 27V
105°C/W
BST
LX
53°C/W
A
=
2
IN