LT4320/LT4320-1

3

4320fb

For more information www.linear.com/LT4320

l

denotes the specifications which apply over the full operating

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

OUTP Voltage Range

l

9

72

V

OUTP Undervoltage Lockout (UVLO) Threshold

INn = OUTP, Other IN = 0V

l

6.2

6.6

7.0

V

INn Turn-On/Off Threshold

OUTP = 9V, Other IN = 0V

l

1.3

3.7

V

OUTP Pin Current

INn = OUTP+

1.0

1.5

mA

INn Pin Current

at 9V

at 72V

INn = OUTP+

l

l

44

0.3

63

0.4

µA

mA

Topside Source-Drain Regulation Voltage (INn – OUTP)

LT4320

LT4320-1

l

l

8

26

20

40

35

55

mV

mV

INn = OUTP+

TGn, Other IN = 0V

l

6.6

10.8

V

Bottom Gate Drive (BGn)

7.0

12

V

Top Gate Pull-Up Current

TGn – INn = 0V, INn = OUTP + 0.1V

TGn – INn = 5V, INn = OUTP + 0.1V

Current Flows Out of TGn, Other IN = 0V

l

l

425

120

µA

µA

Top Gate Pull-Down Current to INn

TGn – INn = 5V, INn = OUTP – 0.25V

Current Flows Into TGn, Other IN = 0V

l

1.25

mA

Top Gate Pull-Down Current to OUTN

INn = 0V, Other IN = OUTP = 9.0V, TGn = 5V

Current Flows Into TGn

l

6.0

mA

Bottom Gate Pull-Up Current

BGn = 5V; INn = OUTP = 9.0V, Other IN = 0V

Current Flows Out of BGn

l

1.9

mA

Bottom Gate Pull-Down Current

BGn = 5V; INn = 0V, Other IN = OUTP = 9.0V

Current Flows Into BGn

l

12.5

mA

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Unless otherwise specified,

exposure to any Absolute Maximum Rating condition for extended periods

may affect device reliability and lifetime.

Note 2: All voltages are referenced to OUTN = 0V unless otherwise specified.

Note 3: Externally forced voltage absolute maximums. The LT4320 may

exceed these limits during normal operation.