AAT2554
Total Power Solution for Portable Applications
Electrical Characteristics1
VINA = VOUT(NOM) + 1V for VOUT options greater than 1.5V. IOUT = 1mA, COUT = 2.2µF, CIN = 1µF, TA = -40°C to
+85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min Typ Max Units
Linear Regulator
I
OUTA = 1mA
TA = 25°C
-1.5
-2.5
1.5
2.5
VOUT Output Voltage Tolerance
%
to 300mA
TA = -40°C to +85°C
VOUT
VDO
+
2
VIN
Input Voltage
5.5
V
VDO
Dropout Voltage3
Line Regulation
IOUTA = 300mA
400
600
mV
%/V
ΔVOUT
VOUT*ΔVIN
/
VINA = VOUTA + 1 to 5.0V
OUTA = 300mA, VINA = VOUTA + 1
0.09
I
ΔVOUT(Line) Dynamic Line Regulation
2.5
60
mV
to VOUTA + 2, TR/TF = 2µs
IOUTA = 1mA to 300mA, TR <5µs
VOUTA > 1.2V
ΔVOUT(Load) Dynamic Load Regulation
mV
mA
mA
µA
IOUT
ISC
Output Current
300
Short-Circuit Current
Quiescent Current
Shutdown Current
VOUTA < 0.4V
600
70
IQ
VINA = 5V; ENA = VIN
VINA = 5V; ENA = 0V
1kHz
125
1.0
ISHDN
µA
65
45
43
Power Supply Rejection
Ratio
PSRR
TSD
IOUTA =10mA
10kHz
1MHz
dB
°C
Over-Temperature
Shutdown Threshold
Over-Temperature
Shutdown Hysteresis
Output Noise
145
THYS
eN
12
250
22
°C
µVRMS
ppm/°C
Output Voltage
TC
Temperature Coefficient
Enable Time Delay
Enable Threshold Low
Enable Threshold High
Enable Input Current
TEN DLY
15
µs
V
_
VEN(L)
VEN(H)
IEN
0.6
1.0
1.5
V
VENA = 5.5V
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. VDO is defined as VIN - VOUT when VOUT is 98% of nominal.
3. For VOUT <2.3V, VDO = 2.5V - VOUT
.
2554.2007.01.1.2
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
