SPX3819 datasheet(2/12 Pages) SIPEX

2 / 12 page

Date:6/8/2004

SPX3819 500mA, Low Noise LDO Voltage Regulator

Power Dissipation ...................................................... Internally Limited

Lead Temp. (Soldering, 5 Seconds) ........................................... 260°C

Operating Junction Temperature Range ................... -40°C to +125°C

Input Supply Voltage ........................................................ -20V to +20V

Enable Input Voltage ........................................................ -20V to +20V

PARAMETER

MIN

TYP

MAX

UNITS

♦

CONDITIONS

Output Voltage Tolerance

-1

-2

♦

Output Voltage Temperature Coef.

ppm/°C

Line Regulation

0.04

0.1

%/V

VIN=VOUT + 1V to 16V

Load Regulation

0.05

0.4

IL = 0.1mA to 500mA

Dropout Voltage

IL = 100µA

(VIN-VO)(Note 2)

♦

125

175

IL = 50mA

250

♦

180

350

IL = 150mA

450

♦

340

550

IL = 500mA

700

♦

Quiescent Current (IGND)0.05

µAVENABLE ≤ 0.4V

♦

VENABLE ≤ 0.25V

Ground Pin Current (IGND)90

150

µAIL = 100µA

190

♦

250

650

µAIL = 50mA

900

♦

1.0

2.0

IL = 150mA

2.5

♦

6.5

25.0

IL = 500mA

30.0

♦

Ripple Rejection (PSRR)

Current Limit (ILIMIT)

800

VOUT = 0V

950

♦

Output Noise (eNO)

300

µVRMS

IL=10mA, CL=1.0µF, CIN=1µF,

(10Hz-100kHz)

µVRMS

IL=10mA, CL=10µF, CBYP =1µF,

CIN =1µF, (10Hz-100kHz)

Input Voltage Level Logic Low (VIL)0.4

OFF

Input Voltage Level Logic High (VIH)2

ENABLE Input Current

0.01

µAVIL ≤ 0.4V

320

VIH ≥ 2.0V

Thermal Resistance (Note 1)

220

°C/W

♦

SOT-23-5 / Junction to Ambient

180

°C/W

♦

SO-8 / Junction to Ambient

ELECTRICAL CHARACTERISTICS

TJ=25°C, VOUT + 1V, for 1.2V Option VIN=VOUT + 1.2V IL=100µA, CL=1µF, and VENABLE ≥ 2.4V. The ♦ denotes the

specifications which apply over full operating temperature range -40

°C to +85°C, unless otherwise specified.

ABSOLUTE MAXIMUM RATINGS

NOTES

Note 1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ(max) the junction to ambient thermal

resistance, and the ambient θJA, and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is

given: PD(max) = (TJ(max)-TA)/θJA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will

go into thermal shutdown. The θJA of the SPX3819 is 220°C/W mounted on a PC board.

Note 2: Not applicable to output voltage 2V or less.

Input Voltage ................................................................... +2.5V to+16V

Operating Junction Temperature Range ................... -40°C to +125°C

Enable Input Voltage .............................................................. 0V to V

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