®
ACT5830
Rev 2, 20-Jan-11
LDO2
ELECTRICAL CHARACTERISTICS
(VIN2 = 3.6V, COUT2 = 1µF, TA = 25°C unless otherwise specified.)
PARAMETER
TEST CONDITIONS
MIN
3.1
TYP
MAX UNIT
Input Supply Range
5.5
3.1
V
V
V
Input Under Voltage Lockout
UVLO Hysteresis
V
IN2 Input Rising
IN2 Input Falling
2.9
3
0.1
0
V
TA = 25°C
-1.2
-2.5
2
3
Output Voltage Accuracy
%
TA = -40°C to 85°C
0
Line Regulation Error
Load Regulation Error
V
IN2 = Max (VNOM1 + 0.5V, 3.1V) to 5.5V
0
mV/V
%/mA
I
OUT2 = 1mA to 300mA
-0.004
60
50
20
0
f = 1kHz, IOUT2 = 300mA, COUT2 = 1µF
f = 10kHz, IOUT2 = 300mA, COUT2 = 1µF
LDO2 Enabled
Power Supply Rejection Ratio
dB
µA
Supply Current per Output
LDO2 Disabled
Dropout Voltage2
IOUT2 = 150mA
100
200
300
mV
mA
mA
Output Current
Current Limit
V
OUT2 = 95% of Regulation Voltage
OUT2 = 0V
330
580
0.45 x ILIM
100
Current Limit Short Circuit Foldback
Internal Soft-Start
V
µs
%
Power Good Flag High Threshold
Output Noise
V
OUT2, Hysteresis = -1%
89
COUT2 = 10µF, f = 10Hz to 100kHz
40
µVRMS
µF
Stable COUT2
1
20
c: VNOM refers to the nominal output voltage level for LDO2 as defined by the Ordering Information section.
2: Dropout Voltage is defined as the different voltage between input and output when the output voltage drops 100mV below the regu-
lation voltage at 1V differential voltage.
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