Advanced Monolithic Systems, Inc.

6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

LP2950/LP2951

-75

0

25 50 75 100 125

170

140

150

Short Circuit Current

TEMPERATURE (° C)

150

120

110

-50 -25

-75

0

25 50 75 100 125

600

150

Dropout Voltage

TEMPERATURE (° C)

400

100

0

-50 -25

I

100

130

160

-75

0

25 50 75 100 125

2.2

150

LP2951 Minimum Operating Voltage

TEMPERATURE (° C)

-50 -25

-75

0

25 50 75 100 125

20

150

LP2951 Feedback Bias Current

TEMPERATURE (° C)

0

-30

-50 -25

-2.0

-1.5 -1.0

-0.5

0

0.5

-250

50

-50

-150

LP2951 Feedback Pin Current

1.0

FEEDBACK VOLTAGE (V)

-200

0

-100

200

400

600

100

mV

800

Line Transient Response

TIME (

µs)

0

8V

4V

0

I

V

0.0

0.3 0.4 0.5 0.6 0.7 0.8

2.5

0.9

LP2951 Comparator Sink Current

OUTPUT LOW VOLTAGE (V)

1.5

0.0

0.1 0.2

0

3

4

5

6

7

8

9

4

LP2951 Error Comparator Output

INPUT VOLTAGE (V)

5

2

1

1

2

0

3

6

V

100

µA

1mA

10mA

100mA

OUTPUT CURRENT

0

500

Dropout Voltage

500

300

50

400

300

200

100

2.1

2.0

1.9

1.8

1.7

1.6

10

-10

-20

50

mV

-50

mV

6V

~

~

~

~

8

7

2.0

1.0

0.5

I

T

T

T

T

PIN 7 DRVEN BY EXTERNAL

SOURCE (REGULATOR RUN

OPEN LOOP)

T

T

T

C

HYSTERESIS

50k RESISTOR TO

EXTERNAL 5V SUPPLY

50k

RESISTOR

TO V

OUT