AAT3242
300mA/150mA Dual CMOS LDO Linear Regulator
Electrical Characteristics1
VIN = VOUT(NOM) + 1.0V for VOUT options greater than 1.5V. VIN = 2.5V for VOUT ≤ 1.5V. IOUT = 1.0mA, COUT
2.2µF, CIN = 1.0µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
=
Symbol Description
LDO A; IOUT = 300mA
Conditions
Min
Typ Max
Units
I
OUT = 1mA TA = 25°C
-1.5
-2.5
VOUT + VDO
1.5
2.5
5.5
VOUT
Output Voltage Tolerance
%
to 300mA
TA = -40 to 85°C
5
VIN
VDO
ΔVOUT
VOUT*ΔVIN
Input Voltage
V
mV
%/V
Dropout Voltage2, 3
Line Regulation4
IOUT = 300mA
VIN = VOUT + 1 to 5.0 V
400 600
0.09
/
ΔVOUT(Line) Dynamic Line Regulation
IOUT = 300mA, VIN = VOUT + 1
to VOUT + 2, TR/TF = 2µS
IOUT = 1mA to 300mA,
TR <5µS
5.0
60
mV
mV
ΔVOUT(Load) Dynamic Load Regulation
VEN(L)
VEN(H)
VPOK
VPOKHYS
VPOK(LO)
IPOK
Enable Threshold Low
Enable Threshold High
Power OK Trip Threshold
Power OK Hysteresis
Power OK Output Voltage Low
POK Output Leakage Current
Output Current
0.6
V
1.5
90
V
% of VOUT
% of VOUT
V
VOUT Rising, TA = 25°C
94
1.0
98
ISINK = 1mA
VPOK < 5.5V, VOUT in Regulation
VOUT > 1.2V
0.4
1.0
µA
mA
IOUT
300
ISC
IQ
ISD
Short-Circuit Current
Ground Current
Shutdown Current
VOUT < 0.4V
600
70 125
mA
µA
µA
VIN = 5V, No Load; EN A = VIN
VIN = 5V, EN A = 0V
1kHz
IOUT =1 0mA 10kHz
1MHz
1.0
65
45
42
PSRR
TSD
Power Supply Rejection Ratio
dB
°C
°C
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
145
THYS
12
eN
TC
Output Noise
Output Voltage Temperature
Coefficient
eNBW = 300Hz to 50kHz
250
22
µVRMS
ppm/°C
1. The AAT3242 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 < 2.1V, VDO = 2.5 - VOUT
.
4. CIN = 10µF.
5. To calculate minimum input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX) as long as VIN ≥ 2.5V.
4
3242.2006.04.1.10
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
