AOZ1031AI Alpha & Omega Semiconductor Inc, AOZ1031AI Datasheet - Page 4

• 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

Electrical Characteristics
T
Notes:
3. The device is not guaranteed to operate beyond the Maximum Operating ratings.
A
MODULATOR
PROTECTION
OUTPUT STAGE
Symbol
Rev. 1.6 March 2010
= 25°C, V
V
D
V
V
D
I
V
V
UVLO
I
V
OFF
I
t
I
HYS
MAX
LIM
OVP
f
SS
FB
MIN
IN
EN
FB
O
IN
IN
Supply Voltage
Input under-voltage lockout
threshold
Supply current (Quiescent)
Shutdown supply current
Feedback Voltage
Load regulation
Line regulation
Feedback voltage input current
EN input threshold
EN input hysteresis
Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Error amplifier voltage gain
Error amplifier transconductance
Current Limit
Over-Voltage Protection
Over-temperature shutdown limit
Soft Start Interval
High-side switch on-resistance
Low-side switch on-resistance
= V
EN
= 12V, V
Parameter
OUT
= 3.3V unless otherwise specified.
V
V
I
V
T
Off threshold
On threshold
Off threhsold
On threshold
T
T
V
V
V
V
OUT
A
J
J
IN
IN
EN
IN
IN
IN
IN
rising
falling
= 25°C
www.aosmd.com
rising
falling
= 12V
= 5V
= 12V
= 5V
= 0V
= 0, V
Conditions
FB
= 1.2V, V
(3)
EN
>1.2V
0.788
Min.
500
100
4.5
4.0
2
Typ.
100
600
500
200
960
860
150
100
130
4.1
3.7
1.6
0.8
0.5
2.2
80
30
56
1
1
AOZ1031AI
Max.
0.812
200
700
100
180
2.5
0.6
5.0
18
10
36
70
9
Page 4 of 15
Units
μA / V
V / V
kHz
mΩ
mΩ
mΩ
mΩ
mA
mV
mV
mV
μA
nA
ms
°C
°C
%
%
%
%
V
V
V
V
V
V
A