aoz1281di Alpha & Omega Semiconductor, aoz1281di Datasheet - Page 3

• Manufacturer Part Number: aoz1281di
• Description: Ezbucktm 1.8 A Simple Buck Regulator
• Manufacturer: Alpha & Omega Semiconductor

Absolute Maximum Ratings
Exceeding the Absolute Maximum Ratings may damage the
device.
Note:
1. Devices are inherently ESD sensitive, handling precautions are
Electrical Characteristics
T
guaranteed by design.
Supply Voltage (V
LX to GND
EN to GND
FB to GND
BST to GND
Junction Temperature (T
Storage Temperature (T
ESD Rating
V
ENABLE
MODULATOR
POWER STATE OUTPUT
A
Symbol
I
V
V
V
T
required. Human body model rating: 1.5 k
R
V
LEAKAGE
Rev. 1.0 June 2011
FB_LOAD
V
FB_LINE
EN_HYS
ON_MIN
= 25 °C, V
EN_OFF
D
EN_ON
DS(ON)
V
I
V
T
UVLO
I
I
I
OFF
I
VIN
MAX
LIM
EN
f
VIN
FB
FB
O
SS
(1)
Supply Voltage
Input Under-Voltage Lockout Threshold
UVLO Hysteresis
Supply Current (Quiescent)
Shutdown Supply Current
Feedback Voltage
Load Regulation
Line Regulation
Feedback Voltage Input Current
EN Input Threshold
EN Input Hysteresis
Enable Input Current
Frequency
Maximum Duty Cycle
Minimum On Time
Current Limit
Over-Temperature Shutdown Limit
Soft Start Interval
NMOS On-Resistance
NMOS Leakage
VIN
Parameter
= V
IN
)
EN
= 12 V. Specifications in BOLD indicate a temperature range of -40 °C to +85 °C. These specifications are
S
J
)
)
Parameter
Ω
in series with 100 pF.
-0.7 V to V
-65 °C to +150 °C
Rating
-0.3 V to 26 V
-0.3 V to 6 V
V
+150 °C
VIN
LX
www.aosmd.com
I
V
120 mA < Load < 1.08 A
Load = 600 mA
V
Off Threshold
T
V
V
T
On Threshold
T
V
V
V
+ 6 V
OUT
+2 V
30 V
2 kV
A
J
J
VIN
VIN
EN
FB
IN
IN
EN
Rising
Falling
= 25 ºC
= 12 V
= 3.3 V
= 800 mV
= 0 V
= 0 V, V
Rising
Falling
= 0, V
Recommended Operating Conditions
The device is not guaranteed to operate beyond the
Recommended Operating Conditions.
Note:
2. The value of
Conditions
FB
Supply Voltage (V
Output Voltage Range
Ambient Temperature (T
Package Thermal Resistance
LX
FR-4 board with 2 oz. Copper, in a still air environment with
T
user’s specific board design.
DFN 2x2, 8L (Θ
A
= 1 V, V
= 25 °C. The value in any given application depends on the
= 0 V
EN
Parameter
Θ
> 1.2 V
JA
JA
is measured with the device mounted on a 1-in
VIN
)
(2)
)
A
)
Min.
784
2.3
1.2
1.2
2.2
3
Typ.
0.03
200
800
500
200
100
150
110
400
240
380
1.5
0.5
2.6
87
1
0.8 V to 0.85 x V
Max.
-40 °C to +85 °C
816
2.9
1.5
0.4
1.8
Rating
26
10
8
3
AOZ1281
Page 3 of 12
3.0 V to 26 V
55 °C/W
Units
% / V
MHz
mΩ
mΩ
mV
mA
mV
mV
μA
μA
μA
nA
°C
°C
ns
μs
%
%
V
V
V
V
V
A
2
VIN