LT1950

4

sn1950 1950fs

TEMPERATURE (

°C)

–50

1.26

1.25

1.24

1.23

1.22

1.21

1.20

25

75

1950 G01

–25

0

50

100

125

TEMPERATURE (

°C)

–50

1950 • G02

0

50

100

240

230

220

210

200

190

180

170

160

–25

25

75

125

TEMPERATURE (

°C)

–50

1950 • G03

0

50

100

16

14

12

10

8

6

4

2

0

–25

25

75

125

SHDN = 0V

TEMPERATURE (

°C)

–50

1950 • G04

0

50

100

1.45

1.40

1.35

1.30

1.25

1.20

–25

25

75

125

TEMPERATURE (

°C)

–50

125

120

115

110

105

100

95

90

85

80

75

0

50

75

1950 G05

–25

25

100

125

270

250

230

210

190

170

150

130

110

90

TEMPERATURE (

°C)

–50

0

50

75

1950 G06

–25

25

100

125

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Duty Cycle Clamp

63

75

87

%

–0.3

–1.0

µA

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT1950EGN is guaranteed to meet performance specifications

from 0

°C to 125°C operating junction temperature. Specifications over the

–40

°C to 125°C operating junction temperature range are assured by

design, characterization and correlation with statistical process controls.

The LT1950IGN is guaranteed over the full –40

°C to 125°C operating

junction temperature range.

Note 3: Rise and Fall times are between 10% and 90% levels.

FB Voltage vs Temperature

Switching Frequency vs

Temperature

Shutdown Threshold vs

Temperature

Temperature

Temperature

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

Note 4: Guaranteed by correlation to static test.

Note 5: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. Junction

temperature will exceed 125

°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

Note 6: Guaranteed but not tested.

Note 7: Maximum recommended SYNC frequency = 500kHz.

= 0.1

specified.