Summary description

STHS237x

8/20

Figure 4.

Application circuit overview (STHS2375A/L, STHS2377A/L)

Note:

This configuration uses either data wires or spare wires for DC power.

Table 3.

Class

Usage

Max. Power at Input of

PD (W)

Classification Load

Current Limits (mA)

(

Ω, 1%)

0

Default

0.44 to 12.95

0-4

4420

1

Optional

0.44 to 3.84

9-12

953

2

Optional

3.84 to 6.49

17-20

549

3

Optional

6.49 to 12.95

26-30

357

4

Reserved

1.

Class 4 is currently reserved and should not be used.

36-44

255

Data to Ethernet Physical Layer Device

100

k

Ω

100µF,

100V

+

0.1µF,

100V

To DC/DC

Converter

Data to Ethernet Physical Layer Device

CLASS

ILIM

SMAJ58A

RCLASS

RDET

RILIM

STHS2375A/L

STHS2377A/L

VSS

VDD

RTN

AI12240a

2x DF01S

RX

Pair

Spare

Pair

Spare

Pair

RJ-45

TX

Pair

PG

DET

C1

C2

24.9k

Ω,

1%