Total Power Solution for Portable Applications
Electrical Characteristics
1
V
INA
= V
OUT(NOM)
+ 1V for V
OUT
options greater than 1.5V. I
OUT
= 1mA, C
OUT
= 2.2µF, C
IN
= 1µF, T
A
= -40°C to
+85°C, unless otherwise noted. Typical values are T
A
= 25°C.
Symbol
V
OUT
V
IN
V
DO
ΔV
OUT
/
V
OUT
*ΔV
IN
ΔV
OUT(Line)
ΔV
OUT(Load)
I
OUT
I
SC
I
Q
I
SHDN
PSRR
T
SD
T
HYS
e
N
T
C
T
EN_DLY
V
EN(L)
V
EN(H)
I
EN
AAT2554
Description
Output Voltage Tolerance
Input Voltage
Dropout Voltage
3
Line Regulation
Dynamic Line Regulation
Dynamic Load Regulation
Output Current
Short-Circuit Current
Quiescent Current
Shutdown Current
Power Supply Rejection
Ratio
Over-Temperature
Shutdown Threshold
Over-Temperature
Shutdown Hysteresis
Output Noise
Output Voltage
Temperature Coefficient
Enable Time Delay
Enable Threshold Low
Enable Threshold High
Enable Input Current
Conditions
I
OUTA
= 1mA
to 300mA
T
A
= 25°C
T
A
= -40°C to +85°C
Min
-1.5
-2.5
V
OUT
+
V
DO
2
Typ
Max
1.5
2.5
5.5
Units
%
V
mV
%/V
mV
mV
mA
mA
µA
µA
dB
°C
°C
µV
RMS
ppm/°C
Linear Regulator
I
OUTA
= 300mA
V
INA
= V
OUTA
+ 1 to 5.0V
I
OUTA
= 300mA, V
INA
= V
OUTA
+ 1
to V
OUTA
+ 2, T
R
/T
F
= 2µs
I
OUTA
= 1mA to 300mA, T
R
<5µs
V
OUTA
> 1.2V
V
OUTA
< 0.4V
V
INA
= 5V; ENA = V
IN
V
INA
= 5V; ENA = 0V
1kHz
I
OUTA
=10mA
10kHz
1MHz
400
0.09
2.5
60
300
600
70
65
45
43
145
12
250
22
15
600
125
1.0
0.6
1.5
V
ENA
= 5.5V
1.0
µs
V
V
µA
1. The AAT2554 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
3. For V
OUT
<2.3V, V
DO
= 2.5V - V
OUT
.
2554.2007.01.1.2
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
