4355 データシートの表示（PDF） - Linear Technology

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4355

Positive High Voltage Ideal Diode-OR with Input Supply and Fuse Monitors

Linear Technology 

LTC4355

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. 9V < VOUT < 80V, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

VOUT

Operating Supply Range

l

9

80

V

IOUT

Supply Current

l

2

3

mA

IINx

INx Pin Input Current

GATE High

l 0.5

0.6

1.2

mA

ΔVGATEx

External N-Channel Gate Drive

(VGATEx – VINx)

VOUT = 20V to 80V

VOUT = 9V to 20V

l 10

14

18

V

l 4.5

6

18

V

IGATEx(UP)

External N-Channel Gate Pull-Up Current

VGATEx = VINx,

VINx – VOUT = 100mV

l –14

–20

–26

μA

IGATEx(DN)

External N-Channel Gate Pull-Down in Fault Gate Drive Off, VGATEx = VINx +5V

l

1

2

A

Condition

tOFF

Gate Turn-Off Time

VINx – VOUT = 55mV –|––1V, CGATE = 0

l

VGATEx – VINx < 1V

0.3

0.4

μs

VMONx(TH)

MONx Pin Threshold Voltage

VMONx Rising

l 1.209 1.227 1.245

V

VMONx(HYST) MONx Pin Hysteresis Voltage

l 10

30

45

mV

IMONx(IN)

MONx Pin Input Current

VMONx = 1.23V

l

0

±1

μA

VINx(TH)

INx Pin Threshold Voltage

VINx Rising

l

3

3.5

4

V

VINx(HYST)

INx Pin Hysteresis Voltage

l 25

75

150

mV

ΔVSD

Source-Drain Regulation Voltage

(VINx – VOUT )

VGATEx – VINx = 2.5V

l 10

25

55

mV

ΔVSD(FLT)

Short-Circuit Fault Voltage

(VINx – VOUT) Rising

SET = 0V

SET = 100kΩ

SET = Hi-Z

l 0.2

0.25

0.3

V

l 0.4

0.5

0.6

V

l 1.3

1.5

1.6

V

ΔVSD(FLT)(HYST) Short-Circuit Fault Hysteresis Voltage

VFLT

PWRFLTx, FUSEFLTx, VDSFLT Pins

IPWRFLTx, IFUSEFLTx, IVDSFLT = 5mA

l

Output Low

IFLT

PWRFLTx, FUSEFLTx, VDSFLT Pins

VPWRFLTx, VFUSEFLTx, VVDSFLT = 5V

l

Leakage Current

30

mV

100

200

mV

0

±1

μA

RSET(L)

RSET(M)

RSET(H)

SET Resistance Range for ΔVSD(FLT) = 0.25V

SET Resistance Range for ΔVSD(FLT) = 0.5V

SET Resistance Range for ΔVSD(FLT) = 1.5V

l

0

l 50

l

1

5

kΩ

150

kΩ

MΩ

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 pins are positive, all voltages are referenced to

GND unless otherwise specified.

Note 3: The GATEx pins are internally limited to a minimum of 13V above

INx. Driving these pins beyond the clamp may damage the part.

4355fe

3

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