LT4356-1

3

43561fd

The

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: All currents into device pins are positive; all currents out of device

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

l

480

V

l

1

1.5

mA

LT4356I-1, LT4356C-1

LT4356H-1

l

l

7

7

7

25

30

40

μA

μA

μA

Reverse Input Current

l

l

0.3

0.8

1

2

mA

mA

GATE Pin Output High Voltage

l

l

4.5

10

8

18

V

V

GATE Pin Pull-Up Current

l

l

–4

–4.5

–23

–30

–36

–50

μA

μA

GATE Pin Pull-Down Current

l

l

l

75

5

1.5

150

10

5

mA

mA

mA

FB Pin Servo Voltage

l

l

1.225

1.215

1.25

1.25

1.275

1.275

V

V

FB Pin Input Current

l

0.3

1

μA

Overcurrent Fault Threshold

l

l

l

l

45

42.5

46

43

50

50

51

51

55

55

56

56

mV

mV

mV

mV

SNS Pin Input Current

l

510

22

μA

FLT, EN Pins Leakage Current

FLT, EN = 80V

l

2.5

4.5

μA

μA

TMR Pin Pull-up Current

l

l

l

l

l

–1.5

–44

–3.5

–2.5

–195

–2.5

–50

–5.5

–4.5

–260

–4

–55

–8

–6.5

–315

μA

μA

μA

μA

μA

TMR Pin Pull-down Current

l

1.7

2.2

2.7

μA

TMR Pin Thresholds

l

l

1.22

0.48

1.25

0.5

1.28

0.52

V

V

Early Warning Period

l

80

100

120

mV

l

1.22

1.25

1.28

V

l

0.3

1

μA

l

l

2

300

8

800

V

mV

OUT Pin Input Current

l

l

200

6

300

12

μA

mA

OUT Pin High Threshold

l

0.25

0.5

0.7

V

SHDN Pin Threshold

l

0.6

0.4

1.4

1.7

2.1

V

V

l

1.7

2.2

V

SHDN Pin Current

l

–1

–4

–8

μA

Overcurrent Turn Off Delay Time

l

24

μs

Overvoltage Turn Off Delay Time

l

0.25

1

μs

pins are negative. All voltages are referenced to GND unless otherwise

specified.

Note 3: An internal clamp limits the GATE pin to a minimum of 10V above

the OUT pin. Driving this pin to voltages beyond the clamp may damage

the device.

ELECTRICAL CHARACTERISTICS