LT4295 datasheet(4/50 Pages) AD

4 / 50 page

LTC9101-1/

LTC9102/LTC9103

Rev. 0

For more information www.analog.com

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main PoE Supply Voltage

AGND – VEE

Type 2 or 3 Compliant Output

Type 4 Compliant Output

LTC9102/LTC9103 Undervoltage Lock-Out

AGND – VEE

8.2

VDD

VDD Supply Voltage

VDD – DGND

3.3

3.6

Undervoltage Lock-Out

2.8

VDD Slew Rate, Falling

2.4 ≤ VDD – DGND ≤ 3.0 (Note 7)

mV/μs

VCAP1, VCAP2

Internal Regulator Supply Voltage

VCAP1 – DGND, VCAP2 – DGND (Note 13)

1.2

VCAP3

Internal 3.3V Regulator Supply Voltage

CAP3 – VEE (Note 13)

3.3

3.6

tCAP3EXT

CAP3 External Supply Rise Time

0.5V < CAP3 < CAP3(Min), EXT3 Tied to CAP3

(Note 7)

VCAP4

Internal 4.3V Regulator Supply Voltage

CAP4 – VEE (Note 13)

4.3

IEE

VEE Supply Current

PWRIN Pin Connected to AGND, EXT3 LOW, All

Gates Fully Enhanced.

7.7

3.3V Rail Supply Current

From CAP3 = 3.3V (EXT3 HIGH)

4.2

5.4

6.6

IDD

VDD Supply Current

(VDD – DGND) = 3.3V

Detection/Connection Check

Forced Current

Load Resistance 15.5k to 32k

220

143

240

160

260

180

µA

Forced Voltage

Load Resistance 18.5k to 27.5k

Detection/Connection Check Current

Compliance

AGND – OUTn = 0V

0.8

0.9

VOC

Detection/Connection Check Voltage

Compliance

AGND – OUTn, Open Port

10.4

Detection/Connection Check Voltage Slew

Rate

AGND – OUTn, CPORT = 150nF (Note 7)

0.01

V/µs

Min. Valid Signature Resistance

15.5

18.5

kΩ

Max. Valid Signature Resistance

27.5

29.7

kΩ

Classification

VCLASS

Classification Voltage

AGND – OUTn, SENSEn – VSSKn < 5mV

20.5

Classification Current Compliance

SENSEn – VSSKn, OUTn = AGND (Note 15)

Classification Threshold

SENSEn – VSSKn (Note 15)

Class Signature 0 – 1

Class Signature 1 – 2

Class Signature 2 – 3

Class Signature 3 – 4

Class Signature 4 – Overcurrent

0.5

1.3

2.1

3.1

4.5

0.65

1.45

2.3

3.3

4.8

0.8

1.6

2.5

3.5

5.1

VMARK

Classification Mark State Voltage

AGND – OUTn, SENSEn – VSSKn < 5mV

7.5

Mark State Current Compliance

OUTn = AGND

Gate Driver

GATE Pin Pull-Down Current

Port Off, GATEn = VEE + 5V

GATE Pin Fast Pull-Down Current

GATEn = VEE + 5V

GATE Pin On Voltage

GATEn – VEE, IGATEn = 1µA

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. AGND – VEE = 55V and VDD – DGND = 3.3V unless otherwise noted.

(Notes 3 and 4)

LT4295 Datasheet(PDF) 4 Page - Analog Devices

LT4295 Datasheet(HTML) 4 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Datasheet Download

Link URL