FSP2131 datasheet(3/11 Pages) FOSLINK

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300MA HIGH PSRR LOW DROPOUT CMOS LINEAR REGULATOR

2007-4-19

3/11

FSP2131

ELECTRICAL CHARACTERISTICS

(VIN = VO + 1V, CIN = 1µF, CO = 2.2µF, TA= 25°C unless otherwise specified.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Voltage

VIN

Note1

5.5

Output Voltage Accuracy

IO= 1mA

-2

Output Current

300

Note2

Ground Current

IGND

IO= 1mA to 300mA

µA

Quiescent Current

IO= 0mA

µA

IO= 1mA, VO < 2V

VIN =2.8V to 3.8V

-0.15

0.1

0.15

IO= 1mA, 2≤ VO < 3.3V

VIN =VO + 0.5V to VO + 1V

-0.1

0.03

0.1

Line Regulation

LNR

IO= 1mA, VO ≥3.3V

VIN =VO + 0.5V to VO + 1V

-0.4

0.2

0.4

%/V

Load Regulation Error

LDR

IO = 1mA to 300mA

-1

0.2

Temperature Coefficient

IO = 1mA

ppm/

°C

Over Temperature Shutdown

OTS

IO = 1mA

150

°C

Over Temperature Hystersis

OTH

IO = 1mA

°C

f=100Hz

f= 1KHz

Power Supply Ripple Rejection

(with bypass Cap.)

PSRR

IO = 100mA

CBYP = 10nF

Vo =1.8V

f= 10KHz

f=100Hz

f= 1KHz

Power Supply Ripple Rejection

(without bypass Cap.)

PSRR

IO = 100mA

Vo =1.8V

f= 10KHz

VO= 1.8V

850

1100

2.5

≤ VO < 3.3V

370

450

Dropout Voltage

VDO

IO = 300mA

VO ≥ 3.3V

180

230

Output Noise

CBYP =10nF, f = 10Hz to 100kHz

µVRMS

Note 1：The minimum input voltage of the FSP2131 is determined by output voltage and dropout voltage. The

minimum input voltage is defined as:

VIN(MIN)=VO+VDROP

Note 2：Output current is limited by PD, maximum IO=PD/(VIN(MAX)-VO)

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