7

TPS23754, TPS23754-1, TPS23756

www.ti.com

SLVS885I – OCTOBER 2008 – REVISED DECEMBER 2017

Product Folder Links: TPS23754 TPS23754-1 TPS23756

Submit Documentation Feedback

Copyright © 2008–2017, Texas Instruments Incorporated

Electrical Characteristics (continued)

Unless otherwise noted: CS = COM = APD = CTL = RTN = ARTN, GATE and GAT2 float, RFRS= 68.1 kΩ, RBLNK= 249 kΩ, DT

= VB, PPD = VSS, T2P open, CVB = CVC = 0.1 μF, RDEN = 24.9 kΩ, RCLS open, 0 V ≤ (VDD, VDD1) ≤ 57 V, 0 V ≤ VC ≤ 18 V,

–40°C

≤ TJ ≤ 125°C. Typical specifications are at 25°C.

CONTROLLER SECTION ONLY

[VSS = RTN and VDD = VDD1] or [VSS = RTN = VDD], all voltages referred to [ARTN, COM]

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(2)

These parameters are provided for reference only, and do not constitute part of TI's published specifications for purposes of TI's product

warranty.

APD / PPD

VAPDEN

APD threshold voltage

VAPD rising

1.43

1.5

1.57

V

VAPDH

Hysteresis (1)

0.29

0.31

0.33

VPPDEN

PPD threshold voltage

VPPD- VVSS rising, UVLO disable

1.45

1.55

1.65

V

VPPDH

Hysteresis (1)

0.29

0.31

0.33

VPPD2

VPPD- VVSS rising, Class enable

7.4

8.3

9.2

V

VPPD2H

Hysteresis (1)

0.5

0.6

0.7

APD leakage current

(source or sink)

VC = 12 V, VAPD = VB

1

μA

IPPD

PPD sink current

VPPD-VSS = 1.5 V

2.5

5

7.5

μA

THERMAL SHUTDOWN

turnon temperature

TJ rising

135

145

155

°C

Hysteresis(2)

20

°C

(1)

The hysteresis tolerance tracks the rising threshold for a given device.

6.6 Electrical Characteristics: PoE and Control

[VDD = VDD1] or [VDD1 = RTN], VC = RTN, COM = RTN = ARTN, all voltages referred to VSS unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

DETECTION (DEN)

(VDD = VDD1 = RTN = VSUPPLY positive)

Detection current

Measure ISUPPLY

VDD = 1.6 V

62

64.3

66.5

μA

VDD = 10 V

399

406

414

Detection bias current

VDD = 10 V, float DEN, measure ISUPPLY,

Note: Not during Mark state

5.6

10

μA

VPD_DIS

Hotswap disable threshold

3

4

5

V

DEN leakage current

VDEN = VDD = 57 V, float VDD1 and RTN, measure IDEN

0.1

5

μA

CLASSIFICATION (CLS)

(VDD = VDD1 = RTN = VSUPPLY positive)

ICLS

Classification current,

applies to both cycles

13 V

≤ VDD ≤ 21 V, Measure ISUPPLY

mA

RCLS = 1270 Ω

1.8

2.1

2.4

RCLS = 243 Ω

9.9

10.4

10.9

RCLS = 137 Ω

17.6

18.5

19.4

RCLS = 90.9 Ω

26.5

27.7

29.3

RCLS = 63.4 Ω

38

39.7

42

Classification mark resistance

5.6 V

≤ VDD ≤ 9.4 V

7.5

9.7

12

k

Ω

VCL_ON

Classification regulator lower

threshold

Regulator turns on, VDD rising

11.2

11.9

12.6

V

VCL_H

Hysteresis(1)

1.55

1.65

1.75

VCU_OFF

Classification regulator upper

threshold

Regulator turns off, VDD rising

21

22

23

V

VCU_H

Hysteresis(1)

0.5

0.75

1

VMSR

Mark state reset

VDD falling

3

4

5

V

Leakage current

VDD = 57 V, VCLS = 0 V, DEN = VSS, measure ICLS

1

μA