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AOZ1081AI датащи(PDF) 5 Page - Alpha & Omega Semiconductors

номер детали AOZ1081AI
подробное описание детали  EZBuck??1.8A High Efficiency
PDF  16 Pages
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производитель  AOSMD [Alpha & Omega Semiconductors]
домашняя страница  http://www.aosmd.com
Logo AOSMD - Alpha & Omega Semiconductors

AOZ1081AI датащи(HTML) 5 Page - Alpha & Omega Semiconductors

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AOZ1081
Rev. 1.1 April 2009
www.aosmd.com
Page 5 of 16
Electrical Characteristics
TA = 25°C, VIN = VEN = 12V, VOUT = 3.3V unless otherwise specified(3)
Note:
3. Specification in BOLD indicate an ambient temperature range of -40°C to +85°C. These specifications are guaranteed by design.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
VIN
Supply Voltage
4.5
16
V
VUVLO
Input Under-Voltage Lockout
Threshold
VIN Rising
VIN Falling
4.0
3.7
V
IIN
Supply Current (Quiescent)
IOUT = 0, VCOMP = 0.1V, VEN
>1.2V
2
3
mA
IOFF
Shutdown Supply Current
VEN = 0V
1
10
µA
VFB
Feedback Voltage
0.2375
0.25
0.2625
V
Load Regulation
0.5
%
Line Regulation
0.5
%
IFB
Feedback Voltage Input Current
200
nA
VEN
EN Input Threshold
Off Threshold
On Threshold
2.0
0.6
V
VHYS
EN Input Hysteresis
100
mV
MODULATOR
fO
Frequency
850
1000
1150
kHz
DMAX
Maximum Duty Cycle
100
%
DMIN
Minimum Duty Cycle
12
%
Error Amplifier Voltage Gain
500
V / V
Error Amplifier Transconductance
200
µA / V
PROTECTION
ILIM
Current Limit
2.5
4.0
A
VPR
Output Over-Voltage Protection
Threshold
Off Threshold
On Threshold
330
240
mV
TJ
Over-Temperature Shutdown Limit
150
°C
tSS
Soft Start Interval
400
µs
OUTPUT STAGE
High-Side Switch On-Resistance
VIN = 12V
VIN = 5V
97
166
130
200
m
Ω



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