AAT1150
1MHz 1A 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 at T
A
= 25°C.
Symbol
V
IN
V
OUT
Description
Input Voltage Range
Output Voltage Tolerance
Conditions
V
IN
= V
OUT
+ 0.3 to 5.5V,
I
OUT
= 0 to 1A
V
IN
= 4.2V, I
LOAD
= 0 - 1A
V
IN
= 2.7 to 5.5V
V
IN
Rising
V
IN
Falling
No Load, V
FB
= 0
V
EN
= 0V, V
IN
= 5.5V
T
A
= 25°C
T
A
= 25°C
T
A
= 25°C
V
IN
= 5V, V
OUT
= 3.3V,
I
OUT
= 600mA
V
IN
= 2.7 to 5.5V
V
IN
= 2.7 to 5.5V
V
EN
= 5.5V
T
A
= 25°C
Min
2.7
-4.0
Typ
Max
5.5
4.0
Units
V
%
%
%/V
∆V
OUT
(V
OUT
*∆V
IN
) Load Regulation
∆V
OUT
/V
OUT
Line Regulation
V
UVLO
V
UVLO(HYS)
I
Q
I
SHDN
I
LIM
R
DS(ON)H
R
DS(ON)L
η
V
EN(L)
V
EN(H)
I
EN
F
OSC
T
SD
T
HYS
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Quiescent Supply Current
Shutdown Current
Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
Efficiency
Enable Low Voltage
Enable High Voltage
Enable Pin Leakage Current
Oscillator Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
3.0
0.2
2.5
1.2
250
160
1.2
110
100
93
0.6
1.4
700
1000
140
15
1.0
1200
150
150
300
1.0
V
mV
µA
µA
A
mΩ
mΩ
%
V
V
µA
kHz
°C
°C
4
1150.2005.03.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
