ACT8796
Rev1, 10-Oct-08
LOW-DROPOUT LINEAR REGULATORS
ELECTRICAL CHARACTERISTICS (REG4)
(VINL = 3.6V, COUT4 = 1µF, TA = 25°C, unless otherwise specified.)
PARAMETER
INL Operating Voltage Range
INL UVLO Threshold
TEST CONDITIONS
MIN
3.1
TYP
MAX UNIT
5.5
3.1
V
V
V
V
V
V
V
V
INL Input Rising
2.9
3
UVLO Hysteresis
INL Input Falling
0.1
c
NOM4 < 1.3V, IOUT4 = 10mA
NOM4 ≥ 1.3V, IOUT4 = 10mA
INL = Max(VOUT4 + 0.5V, 3.6V) to 5.5V
-2.4% VNOM4
+1.8%
+1.8%
Output Voltage Accuracy
V
-1.2%
VNOM4
Line Regulation Error
Load Regulation Error
0
-0.004
60
mV
I
OUT4 = 1mA to 250mA
%/mA
f = 1kHz, IOUT4 = 250mA, COUT4 = 1µF
f = 10kHz, IOUT4 = 250mA, COUT4 = 1µF
Regulator Enabled
Power Supply Rejection Ratio
dB
50
40
Supply Current per Output
µA
mV
mA
Regulator Disabled
0
Dropout Voltaged
IOUT4 = 120mA, VOUT4 > 3.1V
100
200
250
Output Current
Current Limit3
VOUT4 = 95% of regulation voltage
280
Internal Soft-Start
100
89
µs
%
Power Good Flag High Threshold
Output Noise
V
OUT4, hysteresis = -4%
OUT4 = 10µF, f = 10Hz to 100kHz
C
40
µVRMS
µF
Stable COUT4 Range
Discharge Resistor in Shutdown
1
20
LDO Disabled, DIS4[ ] = [1]
650
ꢀ
c: VNOM4 refers to the nominal output voltage level for VOUT4 as defined by the Ordering Information section.
d: Dropout Voltage is defined as the differential voltage between input and output when the output voltage drops 100mV below the
regulation voltage at 1V differential voltage (for 2.8V output voltage or higher)
3: LDO current limit is defined as the output current at which the output voltage drops to 95% of the respective regulation voltage. Un-
der heavy overload conditions the output current limit folds back by 30% (typ)
Innovative PowerTM
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