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AAT1155 Datasheet(PDF) 4 Page - Advanced Analogic Technologies

Part # AAT1155
Description  1MHz 2.5A Step-Down DC/DC Converter
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Manufacturer  ANALOGICTECH [Advanced Analogic Technologies]
Direct Link  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

AAT1155 Datasheet(HTML) 4 Page - Advanced Analogic Technologies

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Electrical Characteristics
V
IN = VCC = VP = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min
Typ Max Units
V
IN
Input Voltage Range
2.7
5.5
V
V
OUT
Output Voltage Tolerance
V
IN = VOUT + 0.2 to 5.5V,
-2.5
2.5
%
I
OUT = 0.5A
V
IL
Input Low Voltage
0.6
V
V
IH
Input High Voltage
1.4
V
V
UVLO
Under-Voltage Lockout
V
IN Rising
2.5
V
V
IN Falling
1.2
V
UVLO(HYS)
Under-Voltage Lockout Hysteresis
250
mV
I
Q
Quiescent Supply Current
No Load, V
FB = 0V
630
1000
µA
I
SHDN
Shutdown Current
V
EN = 0V, VIN = 5.5V
1.0
µA
I
LIM
Current Limit
T
A = 25°C
4.4
A
R
DS(ON)L
High Side Switch On Resistance
T
A = 25°C
60
m
Ω
η
Efficiency
I
OUT = 1.0A
92
%
∆V
OUT (VOUT*∆VIN)
Load Regulation
I
LOAD = 0A to 2.5A
±2.3
%
∆V
OUT/VOUT
Line Regulation
V
IN = 2.7V to 5.5V
0.75
%/V
F
OSC
Oscillator Frequency
T
A = 25°C
1
MHz
T
SD
Over-Temperature Shutdown
140
°C
Threshold
T
HYS
Over-Temperature Shutdown
15
°C
Hysteresis
AAT1155
1MHz 2.5A Step-Down DC/DC Converter
4
1155.2005.11.1.6


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