SPX2941T5 datasheet(2/10 Pages) SIPEX

2 / 10 page

Date: Sept 28-06 Rev E

SPX294 A Low Dropout Linear Regulator

ABSOLUTE MAXIMUM RATINGS

Lead Temperature (soldering, 5 seconds) ................260°C

Storage Temperature Range........................-65°C to +150°C

PARAMETER

CONDITIONS

MIN.

TYP.

MAX

UNIT

Reference Voltage

Adjustable version only

1.228

1.240

1.252

1.215

1.265

Adjust Pin Bias Current

120

Reference Voltage

(NOTE4)

ppm/ °C

Temperature Coefficient

Adjust Pin Bias Current

0.1

nA/°C

Temperature Coefficient

Line Regulation

IOUT=10mA, (VOUT+1V) VIN 16V

0.2

1.0

Load Regulation

VIN=VOUT+1V, 10mA IOUT IFULL

0.3

1.5

Dropout Voltage (Note1)

IOUT=100mA

200

(except 1.8V version)

IOUT=1A

280

550

Ground Current (Note3)

IOUT=750mA, VIN=VOUT+1V

IOUT=1A

Ground Pin Current at

VIN=0.1V less than specified VOUT,

1.2

Dropout

IOUT=10mA

Current Limit

VOUT=0V (Note2)

1.5

2.2

Output Noise Voltage

10Hz to 100kHz, IOUT =100mA,

CL=10 F

400

VRMS

CL=33 F

260

Input Logic Voltage

LOW (OFF)

VIN<10V

0.8

HIGH (ON)

2.4

ENABLE Input Pin Current

VEN=16V

100

600

750

VEN=0.8V

Regulator Output Current

(NOTE5)

in Shutdown

500

Thermal Resistance

TO-220

Junction to Case, at Tab

°C/W

Junction to Ambient

29.3

TO-263

Junction to Case, at Tab

°C/W

Junction to Ambient

31.2

IN=VOUT+ 1V, I OUT=10mA, CIN=6.8 F, COUT=10 F, TA= 25 °C, unless otherwis specified. The boldface applies over the

junction temperature range. Adjustable versions are set at +5.0V.

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

Input Supply Voltage (NOTE6) .... .....................................16V

ELECTRICAL CHARACTERISTICS

NOTE1: Dropout voltage is defined as the input to output differential at which the output voltage drops to 99%

of its nominal value.

NOTE2: V

IN=VOUT(NOMINAL)+1V; for example, VIN=4.3V for a 3.3V regulator. Employ pulse-testing procedures to

minimize temperature rise.

NOTE3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the

sum of the load and ground currents.

NOTE4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power

dissipation is applied, excluding load or line regulation effects.

NOTE5: V

0.8V and V

16V, V

OUT= 0.

NOTE6: Maximum positive supply voltage of 20V must be of limited duration ( <100ms) and duty cycle (<1%).

The maximum continuous supply voltage is 16V.

NOTE7: V

REF

OUT

IN-1), 2.5V

16V, 10 mA I

FL, TJ < TJMAX.

Figure 2. SPX2941 Block Diagram

BLOCK DIAGRAM

Reference

Thermal

Shutdown

OUT

ADJ

GND

O.V

LIMIT

28V

R1*

R2*

1.240V +

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