LT1640HCS8 데이터 시트보기 (PDF) - Linear Technology

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LT1640HCS8

Negative Voltage Hot Swap Controller

Linear Technology 

LT1640L/LT1640H

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

temperature range, otherwise specifications are at TA = 25°C. (Note 2), VDD = 48V, VEE = 0V unless otherwise noted.

SYMBOL

VPG

VPGHY

IDRAIN

VOL

PARAMETER

Power Good Threshold

Power Good Threshold Hysteresis

Drain Input Bias Current

PWRGD Output Low Voltage

PWRGD Output Low Voltage

(PWRGD – DRAIN)

IOH

Output Leakage

ROUT

Power Good Output Impedance

(PWRGD to DRAIN)

AC

tPHLOV

tPHLUV

tPLHOV

tPLHUV

tPHLSENSE

tPHLPG

OV High to GATE Low

UV Low to GATE Low

OV Low to GATE High

UV High to GATE High

SENSE High to Gate Low

DRAIN Low to PWRGD Low

DRAIN Low to (PWRGD – DRAIN) High

tPLHPG

DRAIN High to PWRGD High

DRAIN High to (PWRGD – DRAIN) Low

CONDITIONS

MIN TYP MAX

VDRAIN – VEE, High to Low Transition

1.1

1.4

2.0

0.4

VDRAIN = 48V

q

10

50

500

PWRGD (LT1640L), (VDRAIN – VEE) < VPG

IOUT = 1mA

q

IOUT = 5mA

0.48 0.8

1.50 3.0

PWRGD (LT1640H), VDRAIN = 5V

IOUT = 1mA

q

0.75 1.0

PWRGD (LT1640L), VDRAIN =48V,

q

VPWRGD = 80V

0.05

10

PWRGD (LT1640H), (VDRAIN – VEE) < VPG q

2

6.5

Figures 1, 2

Figures 1, 3

Figures 1, 2

Figures 1, 3

Figures 1, 4

(LT1640L) Figures 1, 5

(LT1640H) Figures 1, 5

(LT1640L) Figures 1, 5

(LT1640H) Figures 1, 5

1.7

1.5

5.5

6.5

2

3

4

0.5

0.5

0.5

0.5

UNITS

V

V

µA

V

V

V

µA

kΩ

µs

µs

µs

µs

µs

µs

µs

µs

µs

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

of a device may be impaired.

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

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

specified.

TYPICAL PERFOR A CE CHARACTERISTICS

Supply Current vs Supply Voltage

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

0

0

20

40

60

80 100

SUPPLY VOLTAGE (V)

1640 G01

Supply Current vs Temperature

1.6

1.5

1.4

1.3

1.2

1.1

1.0

– 50 – 25 0

25 50

TEMPERATURE (°C)

75 100

1640 G02

Gate Voltage vs Supply Voltage

15

14

13

12

11

10

9

8

7

6

0

20

40

60

80 100

SUPPLY VOLTAGE (V)

1640 G03

1640lhfb

3

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