LTC9101-2/LTC9102

3

Rev. 0

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ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC9101AUF-2#PBF

LTC9101AUF-2#TRPBF

91012

24-Lead (4mm × 4mm) Plastic QFN

–40°C to 85°C

LTC9102AUKJ#PBF

LTC9102AUKJ#TRPBF

LTC9102

64-Lead (7mm × 11mm) Plastic QFN

–40°C to 85°C

Contact the factory for parts specified with wider operating temperature ranges.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main PoE Supply Voltage

AGND – VEE

Type 3 Compliant Output

Type 4 Compliant Output

l

l

51

53

57

57

V

V

LTC9102 Undervoltage Lockout

AGND – VEE

l

8.2

9

V

VDD

VDD Supply Voltage

VDD – DGND

l

3

3.3

3.6

V

Undervoltage Warning

2.8

V

Undervoltage Lockout

2.6

V

VDD Slew Rate, Falling

2.4 ≤ VDD – DGND ≤ 3.0 (Note 7)

20

mV/μs

VCAP1, VCAP2 Internal Regulator Supply Voltage

VCAP1 – DGND, VCAP2 – DGND (Note 13)

1.2

V

VCAP3

Internal 3.3V Regulator Supply Voltage

CAP3 – VEE (Note 13)

l

3

3.3

3.6

V

tCAP3EXT

CAP3 External Supply Rise Time

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

(Note 7)

l

1

ms

VCAP4

Internal 4.3V Regulator Supply Voltage

CAP4 – VEE (Note 13)

l

4.3

V

IEE

VEE Supply Current

PWRIN Pin Connected to AGND, EXT3 LOW,

All Gates Fully Enhanced

7.7

11

14

mA

3.3V Rail Supply Current

From CAP3 = 3.3V (EXT3 HIGH)

4.2

5.4

6.6

mA

IDD

VDD Supply Current

(VDD – DGND) = 3.3V

l

40

60

mA

Detection/Connection Check

Forced Current

Load Resistance 15.5k to 32k

l

l

220

143

240

160

260

180

µA

µA

Forced Voltage

Load Resistance 18.5k to 27.5k

l

l

7

3

8

4

9

5

V

V

Detection/Connection Check Current Compliance AGND – OUTn = 0V

l

0.8

0.9

mA

VOC

Detection/Connection Check Voltage Compliance AGND – OUTn, Open Port

l

10.4

12

V

Detection/Connection Check Voltage Slew Rate

AGND – OUTn, CPORT = 150nF (Note 7)

l

0.01

V/µs

Min. Valid Signature Resistance

l

15.5

17

18.5

kΩ

Max. Valid Signature Resistance

l

27.5

29.7

32

kΩ

Classification

VCLASS

Classification Voltage

AGND – OUTn, SENSEn – VSSKn < 5mV

l

16

20.5

V

Classification Current Compliance

SENSEn – VSSKn, OUTn = AGND (Note 15)

l

7

8

9

mV

ELECTRICAL CHARACTERISTICS The

l

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)