ACT5830
Rev PrB, 05-Mar-08
LDO4
ELECTRICAL CHARACTERISTICS
(VIN2 = 3.6V, COUT4 = 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
IN4 = Max (VNOM1 + 0.5V, 3.1V) to 5.5V
0
mV
I
OUT4 = 1mA to 100mA
-0.004
70
60
40
0
%/mA
f = 1kHz, IOUT4 = 100mA, COUT4 = 1µF
f = 10kHz, IOUT4 = 100mA, COUT4 = 1µF
LDO4 Enabled
Power Supply Rejection Ratio
dB
µA
Supply Current per Output
LDO4 Disabled
Dropout Voltage2
IOUT4 = 50mA
100
200
100
mV
mA
mA
Output Current
Current Limit
V
OUT4 = 95% of Regulation Voltage
OUT4 = 0V
115
180
0.45 x ILIM
100
Current Limit Short Circuit Foldback
Internal Soft-Start
V
µs
%
Power Good Flag High Threshold
Output Noise
V
OUT4, Hysteresis = -1%
89
COUT4 = 10µF, f = 10Hz to 100kHz
40
µVRMS
µF
Stable COUT4
1
20
c: VNOM refers to the nominal output voltage level for LDO4 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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