AOZ1021AI Alpha & Omega Semiconductor Inc, AOZ1021AI Datasheet - Page 3

• Manufacturer Part Number: AOZ1021AI
• Description: IC 3A SYNC BUCK REG 8-SOIC
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck)r

Specifications of AOZ1021AI

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 16 V
• Current - Output: 3A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.5 ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 1.15W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 785-1155-2

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 AGND
EN to AGND
FB to AGND
COMP to AGND
PGND to AGND
Junction Temperature (T
Storage Temperature (T
ESD Rating
COMP
required. Human body model rating: 1.5k
Rev. 1.7 November 2010
EN
FB
(1)
Parameter
0.8V
Reference
& Bias
IN
0.2V
)
S
J
)
)
+
–
& POR
UVLO
+
–
EAmp
Comparator
Frequency
Foldback
Softstart
Ω
Regulator
in series with 100pF.
5V LDO
-0.7V to V
-0.3V to V
-65°C to +150°C
Rating
-0.3V to 0.3V
-0.3V to 6V
-0.3V to 6V
Oscillator
+
–
+
IN
IN
+150°C
Comp
Internal
PWM
www.aosmd.com
+0.3V
+0.3V
2.0kV
+5V
18V
Recommended Operating Conditions
The device is not guaranteed to operate beyond the Maximum
Recommended Operating Conditions.
Note:
2. The value of
Supply Voltage (V
Output Voltage Range
Ambient Temperature (T
Package Thermal Resistance (Θ
Package Thermal Resistance (Θ
Package Power Dissipation (P
@ 25°C Ambient
Control
ILimit
PWM
Logic
SO-8
FR-4 board with 2oz. Copper, in a still air environment with
T
user's specific board design.
SO-8
SO-8
OTP
A
= 25°C. The value in any given application depends on the
AGND
Θ
Parameter
Shifter
JA
Driver
Level
FET
+
is measured with the device mounted on 1-in
IN
)
A
ISen
)
+
–
D
)
JA
JC
)
)
(2)
Q2
Q1
PGND
VIN
-40°C to +85°C
AOZ1021
Rating
Page 3 of 15
4.5V to 16V
0.8V to V
LX
87°C/W
30°C/W
1.15W
2
IN