AAT1155 Ver la hoja de datos (PDF) - Advanced Analogic Technologies
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AAT1155 Datasheet PDF : 17 Pages
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AAT1155
1MHz 2.5A Step-Down DC/DC Converter
Electrical Characteristics
VIN = VCC = VP = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
VIN
VOUT
VIL
VIH
VUVLO
VUVLO(HYS)
IQ
ISHDN
ILIM
RDS(ON)H
η
ΔVOUT (VOUT*ΔVIN)
ΔVOUT/VOUT
FOSC
TSD
THYS
Input Voltage Range
Output Voltage Tolerance
Input Low Voltage
Input High Voltage
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Quiescent Supply Current
Shutdown Current
Current Limit
High Side Switch On Resistance
Efficiency
Load Regulation
Line Regulation
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
VIN = VOUT + 0.2 to 5.5V,
IOUT = 0.5A
VIN Rising
VIN Falling
No Load, VFB = 0V
VEN = 0V, VIN = 5.5V
TA = 25°C
TA = 25°C
IOUT = 1.0A
ILOAD = 0A to 2.5A
VIN = 2.7V to 5.5V
TA = 25°C
Min Typ Max Units
2.7
5.5 V
-2.5
2.5 %
0.6 V
1.4
V
1.2
2.5 V
250
mV
630 1000 µA
1.0 µA
4.4
A
60
mΩ
92
%
±2.3
%
0.75
%/V
1
MHz
140
°C
15
°C
4
1155.2006.09.1.7
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