3

Rev. 3/6/03

SPX2950/SPX2951 150mA Low Dropout Voltage Regulator

©Copyright 2003 Sipex Corporation

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Error Comparator

Output Leakage Current

0.01

1

0.01

1

µA

Output Low Voltage

150

250

150

250

mV

Upper Threshold Voltage

(Note 7)

40

60

40

60

mV

Lower Threshold Voltage

(Note 7)

75

95

75

95

mV

Hysteresis

(Note 7)

15

15

mV

Shutdown Input

Input Logic Voltage

Low (Regulator ON)

1.3

0.7

1.3

0.7

V

High (Regulator OFF)

2.0

2.0

V

30

50

30

50

µA

400

800

400

800

µA

Regulator Output Current (Note 8)

3

10

3

10

µA

in Shutdown

ELECTRICAL CHARACTERISTICS: Continued

Electrical characteristics at V

the full operating temperature range.

Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by

the total temperature range.

Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes

in output voltage

due to heating effects are covered under the specification for thermal regulation.

regulation versus temperature and load current.

Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below

its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input

supply voltage of 2V ( 2.3V over temperature) must be taken into account.

Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the

nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,

the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235 = 384mV. Thresholds remain

7.5% guaranteed.