AAT1155 Datasheet, PDF (4/17 Pages) Advanced Analogic Technologies – 1MHz 2.5A Step-Down DC/DC Converter

AAT1155
1MHz 2.5A Step-Down DC/DC Converter
Electrical Characteristics
V_IN = V_CC = V_P = 5V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C.
Symbol
Description
Conditions
V_IN
V_OUT
V_IL
V_IH
V_UVLO
V_UVLO(HYS)
I_Q
I_SHDN
I_LIM
R_DS(ON)L
η
∆V_OUT (V_OUT*∆V_IN)
∆V_OUT/V_OUT
F_OSC
T_SD
T_HYS
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
V_IN = V_OUT + 0.2 to 5.5V,
I_OUT = 0.5A
V_IN Rising
V_IN Falling
No Load, V_FB = 0V
V_EN = 0V, V_IN = 5.5V
T_A = 25°C
T_A = 25°C
I_OUT = 1.0A
I_LOAD = 0A to 2.5A
V_IN = 2.7V to 5.5V
T_A = 25°C
Min Typ Max Units
2.7
5.5 V
-2.5
2.5 %
0.6 V
1.4
V
2.5
V
1.2
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
1155.2005.11.1.6