Preliminary Datasheet

LP3984

LP3984 – 01 Ver. 1.1 Datasheet

Jul.-2008

Page 3 of 8

Electrical Characteristics

(VIN = VOUT + 1V, CIN = COUT = 1µF, CBP = 22nF, TA = 25° C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ. Max

Units

Output Voltage Accuracy

ΔVOUT

IOUT = 1mA

−2

--

+2

%

Output Loading Current

VEN=VIN,VIN>2.5V

300

mA

Current Limit

ILIM

RLOAD = 1Ω

360 400

mA

Quiescent Current

IQ

VEN ≥ 1.2V, IOUT = 0mA

75

130

μA

Dropout Voltage

VDROP

IOUT = 200mA, VOUT >

2.8V

160 200

mV

IOUT = 300mA, VOUT >

2.8V

220 300

Line Regulation

ΔVLINE

VIN = (VOUT + 1V) to

5.5V, IOUT = 1mA

0.3

%

Load Regulation

ΔLOAD

1mA < IOUT < 300mA

0.6

%

Standby Current

ISTBY

VEN = GND, Shutdown

0.01 1

μA

EN Input Bias Current

IIBSD

VEN = GND or VIN

0.1

100

nA

EN Threshold

Logic-Low

Voltage

VIL

VIN = 3V to 5.5V,

Shutdown

0.4

V

Logic-High

Voltage

VIH

VIN = 3V to 5.5V,

Start-Up

1.2

Output Noise Voltage

10Hz to 100kHz, IOUT =

200mA COUT = 1µF

100

uVRMS

Power Supply

f = 100Hz PSRR

−76

dB

Rejection Rate

f = 10kHz

COUT = 1µF,

IOUT = 10mA

−68

Thermal Shutdown Temperature

TSD

165

°C