AOZ1018 Ver la hoja de datos (PDF) - Alpha and Omega Semiconductor
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AOZ1018 Datasheet PDF : 14 Pages
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AOZ1018
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
Parameter
Supply Voltage (VIN)
LX to AGND
EN to AGND
FB to AGND
COMP to AGND
PGND to AGND
Junction Temperature (TJ)
Storage Temperature (TS)
Rating
18V
-0.7V to VIN+0.3V
-0.3V to VIN+0.3V
-0.3V to 6V
-0.3V to 6V
-0.3V to +0.3V
+150°C
-65°C to +150°C
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Parameter
Supply Voltage (VIN)
Output Voltage Range
Ambient Temperature (TA)
Package Thermal Resistance SO-8
(ΘJA)(1)
Rating
4.5V to 16V
0.8V to VIN
-40°C to +85°C
105°C/W
Note:
1. The value of ΘJA is measured with the device mounted on 1-in2
FR-4 board with 2oz. Copper, in a still air environment with TA = 25°C.
The value in any given application depends on the user's specific
board design.
Electrical Characteristics
TA = 25°C, VIN = VEN = 12V, VOUT = 3.3V unless otherwise specified(2)
Symbol
Parameter
Conditions
Min. Typ. Max.
VIN
VUVLO
Supply Voltage
Input Under-Voltage Lockout Threshold
IIN
Supply Current (Quiescent)
IOFF
Shutdown Supply Current
VFB
Feedback Voltage
Load Regulation
Line Regulation
IFB
Feedback Voltage Input Current
VEN
EN Input threshold
VHYS
EN Input Hysteresis
MODULATOR
fO
DMAX
DMIN
Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Error Amplifier Voltage Gain
Error Amplifier Transconductance
PROTECTION
ILIM
Current Limit
Over-Temperature Shutdown Limit
tSS
Soft Start Interval
OUTPUT STAGE
High-Side Switch On-Resistance
VIN Rising
VIN Falling
IOUT = 0, VFB = 1.2V, VEN >1.2V
VEN = 0V
Off Threshold
On Threshold
4.5
0.782
2.0
4.00
3.70
2
3
0.8
0.5
1
100
16
3
20
0.818
200
0.6
350 500 600
100
6
500
200
TJ Rising
TJ Falling
2.5
3.6
145
100
4
VIN = 12V
VIN = 5V
97
130
166 200
Note:
2. Specification in BOLD indicate an ambient temperature range of -40°C to +85°C. These specifications are guaranteed by design.
Units
V
V
mA
µA
V
%
%
nA
V
mV
kHz
%
%
V/ V
µA / V
A
°C
ms
mΩ
Rev. 1.0 November 2006
www.aosmd.com
Page 3 of 14
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