1MHz 3A 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
V
UVLO
V
UVLO(HYS)
I
Q
I
SHDN
I
LIM
R
DS(ON)H
η
ΔV
OUT
(V
OUT
*ΔV
IN
)
ΔV
OUT
/V
OUT
F
OSC
V
EN(L)
V
EN(H)
T
SD
T
HYS
AAT1154
Description
Input Voltage Range
Output Voltage Tolerance
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
Enable Threshold Low
Enable Threshold High
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Conditions
V
IN
= V
OUT
+ 0.2V to 5.5V,
I
OUT
= 0A to 3A
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
= 1A
I
LOAD
= 0A to 3A
V
IN
= 2.7V to 5.5V
T
A
= 25°C
Min
2.7
-5.0
1.2
Typ Max Units
5.5
5.0
2.5
250
630
V
%
V
mV
µA
µA
A
mΩ
%
%
%/V
MHz
V
V
°C
°C
1000
1.0
4.4
60
92
±2.6
0.75
1
0.6
1.4
140
15
4
1154.2006.09.1.6
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
