Preliminary
Electrical Characteristics
Parameter
Output Voltage Accuracy
Current Limit
Quiescent Current
Symbol
ΔVOUT
ILIM
IQ
Datasheet
LP3982
(VIN = VOUT + 1V, CIN = COUT = 1µF, CBP = 22nF, TA = 25° C, unless otherwise specified)
Test Conditions
IOUT = 1mA
RLOAD = 1Ω
VEN ≥ 1.2V, IOUT = 0mA
IOUT = 200mA, VOUT >
Dropout Voltage
VDROP
2.8V
IOUT = 300mA, VOUT >
2.8V
Line Regulation
Load Regulation
Standby Current
EN Input Bias Current
Logic-Low
EN Threshold
Voltage
Logic-High
Voltage
Output Noise Voltage
Power Supply
Rejection Rate
f = 100Hz
f = 10kHz
TSD
PSRR
COUT = 1µF,
IOUT = 10mA
VIH
ΔVLINE
ΔLOAD
ISTBY
IIBSD
VIL
VIN = (VOUT + 1V) to
5.5V, IOUT = 1mA
1mA < IOUT < 300mA
VEN = GND, Shutdown
VEN = GND or VIN
VIN = 3V to 5.5V,
Shutdown
VIN = 3V to 5.5V,
Start-Up
10Hz to 100kHz, IOUT =
200mA COUT = 1µF
1.2
100
−80
−55
165
dB
°C
uVRMS
0.01
0
Min
−2
360
Typ
--
400
90
170
220
130
200
mV
300
0.3
0.6
1
100
0.4
V
%
%
μA
nA
Max
+2
Units
%
mA
μA
Thermal Shutdown Temperature
LP3982 – Ver. 1.0 Datasheet
Dec.-2006
Page 3 of 8
POWER [ LOWPOWER SEMICONDUCTOR INC ]
