LTC4264

2

4264f

PACKAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

PWRGD Voltage (Note 3)

Current Fed ..........................................................5mA

PWRGD Current.....................................................10mA

Operating Ambient Temperature Range

LTC4264C ................................................ 0°C to 70°C

LTC4264I ............................................. –40°C to 85°C

Junction Temperature ........................................... 150°C

Storage Temperature Range................... –65°C to 150°C

(Notes 1, 2)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

IEEE 802.3af System

Signature Range

Classification Range

UVLO Turn-On Voltage

UVLO Turn-Off Voltage

Voltage with Respect to GND Pin

(Notes 5, 6, 7, 8)

●

●

●

●

●

–1.5

–12.5

–37.7

–29.8

–38.9

–30.6

–57

–10.1

–21

–40.2

–31.5

V

V

V

V

V

IC Supply Current when On

●

3mA

IC Supply Current During Classification

●

0.55

0.62

0.70

mA

Current Accuracy During Classification

(Notes 10,11)

●

±3.5

%

Classification Stability Time

●

1ms

Signature Resistance

●

23.25

26.00

k

Ω

Invalid Signature Resistance

Measurement, SHDN Tied to GND (Notes 6, 7)

●

10

11.8

k

Ω

SHDN High Level Input Voltage

(Note 12)

●

357

V

SHDN Low Level Input Voltage

●

0.45

V

SHDN Input Resistance

●

100

kΩ

Limit (Note 13)

●

4V

12

11

10

9

8

7

1

2

3

4

5

6

GND

NC

PWRGD

PWRGD

SHDN

NC

TOP VIEW

13

DE12 PACKAGE

12-LEAD (4mm

× 3mm) PLASTIC DFN

EXPOSED PAD (PIN 13) MUST BE SOLDERED TO

AN ELECTRICALLY ISOLATED HEAT SINK

ORDER PART NUMBER

DE PART MARKING*

LTC4264CDE

LTC4264IDE

4264

4264

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

Consult LTC Marketing for parts specified with wider operating temperature ranges.

*The temperature grade is identified by a label on the shipping container.

The