AOZ1031AI Alpha & Omega Semiconductor Inc, AOZ1031AI Datasheet - Page 3

• Manufacturer Part Number: AOZ1031AI
• Description: IC BUCK SYNC ADJ 3A SO8
• Manufacturer: Alpha & Omega Semiconductor Inc
• Series: EZBuck™r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of AOZ1031AI

• Featured Product: The AOZ103x Family Synchronous Buck Regulator
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 18 V
• Current - Output: 3A
• Frequency - Switching: 600kHz
• Voltage - Input: 4.5 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 785-1253-2

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
LX to AGND
EN to AGND
FB to AGND
COMP to AGND
PGND to AGND
Junction Temperature (T
Storage Temperature (T
ESD Rating
required. Human body model rating: 1.5kΩ in series with 100pF.
Rev. 1.6 March 2010
COMP
Parameter
EN
FB
(1)
0.8V
IN
Reference
)
0.96V
& Bias
0.2V
S
J
)
)
+
+
& POR
–
–
UVLO
+
–
EAmp
20V
-0.7V to V
-3V for 20 nS
-0.3V to V
-0.3V to 6V
-0.3V to 6V
-0.3V to +0.3V
+150°C
-65°C to +150°C
2.0kV
Frequency
Foldback
Comparator
Over-Voltage
Protection
Comparator
Softstart
Regulator
5V LDO
IN
IN
Rating
+0.3V
+0.3V
+
–
+
600kHz
www.aosmd.com
Internal
Comp
PWM
+5V
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Control
Supply Voltage (V
Output Voltage Range
Ambient Temperature (T
Package Thermal Resistance
Package Power Dissipation (P
25°C Ambient
ILimit
PWM
Logic
OTP
SO-8 (Θ
SO-8 (Θ
SO-8
AGND
JA
JC
)
)
Shifter
Driver
Level
Parameter
FET
+
IN
)
ISen
A
+
–
)
D
) @
Q2
Q1
PGND
VIN
4.5V to 18V
0.8V to V
-40°C to +85°C
87°C/W
30°C/W
1.15W
AOZ1031AI
Rating
Page 3 of 15
LX
IN