3

LTC1265/LTC1265-3.3/LTC1265-5

Note 3: Dynamic supply current is higher due to the gate charge being

delivered at the switching frequency.

off time increases by approximately 40%.

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

of the device may be impaired.

LTC1265CS, LTC1265CS-3.3, LTC1265CS-5:

LOAD CURRENT (A)

0.01

70

75

80

85

90

100

0.10

1.00

1265 G01

95

LTC1265-3.3

COIL = CTX33-4

INPUT VOLTAGE (V)

4

80

82

86

88

90

100

94

6

8

913

LTC1265 G03

84

96

98

92

57

10

11

12

LTC1265-3.3

COIL = CTX33-4

INPUT VOLTAGE (V)

4

80

82

86

88

90

100

94

6

8

913

1265 G02

84

96

98

92

57

10

11

12

LTC1265-5

COIL = CTX33-4

Switch Resistance

INPUT VOLTAGE (V)

3

0

0.1

0.3

0.4

0.5

7

11

13

0.9

1265 G05

0.2

59

6

10

12

48

0.6

0.7

0.8

0

0.4

0.8

1.2

1.0

0.6

0.2

2

14

6

8

1265 G04

10

03

5

7

9

0

°C

25

°C

70

°C

Operating Frequency

Efficiency vs Input Voltage

Efficiency vs Input Voltage

Efficiency vs Load Current

Switch Leakage Current

TEMPERATURE (

°C)

0

180

240

300

270

210

150

90

30

80

1265 G06

120

60

0

20

40

60

100

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Shutdown Pin High

Min Voltage at Pin 10 for Device to be in Shutdown

1.2

V

Shutdown Pin Low

Max Voltage at Pin 10 for Device to be Active

0.6

V

Shutdown Pin Input Current

0.5

µA