Datasheet

TPS23753A
SLVS933B –JULY 2009–REVISED JANUARY 2010 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted: CS = APD = CTL = RTN, GATE open, R
FRS
= 60.4 kΩ, R
BLNK
= 249 kΩ, C
VB
= C
VC
= 0.1 mF, R
DEN
=
24.9 kΩ, R
CLS
open, V
VDD-VSS
= 48 V, V
VDD1-RTN
= 48 V, 8.5 V ≤ V
VC-RTN
≤ 18 V, –40°C ≤ T
J
≤ 125°C
Controller Section Only
[V
SS
= RTN and V
DD
= V
DD1
] or [V
SS
= RTN = V
DD
], all voltages referred to RTN. Typical specifications are at 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
GATE
Source current V
CTL
= V
B
, V
C
= 12 V, GATE high, Pulsed measurement 0.30 0.46 0.60 A
Sink current V
CTL
= V
B
, V
C
= 12 V, GATE low, Pulsed measurement 0.50 0.79 1.1 A
APD
V
APDEN
V
APD
↑ 1.42 1.5 1.58
Threshold voltage V
V
APDH
Hysteresis
(2)
0.28 0.3 0.32
THERMAL SHUTDOWN
Turn off temperature 135 145 155 °C
Hysteresis
(3)
20 °C
(2) The hysteresis tolerance tracks the rising threshold for a given device.
(3) These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's
product warranty.
ELECTRICAL CHARACTERISTICS
PoE and Control
[V
DD
= V
DD1
] or [V
DD1
= RTN], V
VC-RTN
= 0 V, all voltages referred to V
SS
. Typical specifications are at 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DEN (DETECTION) (V
DD
= V
DD1
= RTN = V
SUPPLY
positive)
Measure I
SUPPLY
Detection current V
DD
= 1.6 V 62 64.3 66.5 mA
V
DD
= 10 V 399 406 413
Detection bias current V
DD
= 10 V, DEN open, Measure I
SUPPLY
5.2 12 mA
V
PD_DIS
Hotswap disable threshold 3 4 5 V
I
lkg
DEN leakage current V
DEN
= V
DD
= 57 V, Float V
DD1
and RTN, Measure I
DEN
0.1 5 mA
CLS (CLASSIFICATION) (V
DD
= V
DD1
= RTN = V
SUPPLY
positive)
13 V ≤ V
DD
≤ 21 V, Measure I
SUPPLY
R
CLS
= 1270 Ω 1.8 2.14 2.4
R
CLS
= 243 Ω 9.9 10.6 11.3
I
CLS
Classification current mA
R
CLS
= 137 Ω 17.6 18.6 19.4
R
CLS
= 90.9 Ω 26.5 27.9 29.3
R
CLS
= 63.4 Ω 38 39.9 42
V
CL_ON
Regulator turns on, V
DD
rising 10 11.7 13
Classification regulator lower
V
threshold
V
CL_HYS
Hysteresis
(1)
1.9 2.05 2.2
V
CU_OFF
Regulator turns off, V
DD
rising 21 22 23
Classification regulator upper
V
threshold
V
CU_HYS
Hysteresis
(1)
0.5 0.77 1
I
lkg
Leakage current V
DD
= 57 V, V
CLS
= 0 V, DEN = V
SS
, Measure I
CLS
1 mA
RTN (PASS DEVICE) (V
DD1
= RTN)
On resistance 0.7 1.2 Ω
Current limit V
RTN
= 1.5 V, V
DD
= 48 V, Pulsed Measurement 405 450 505 mA
Inrush limit V
RTN
= 2 V, V
DD
: 0 V → 48 V, Pulsed Measurement 100 140 180 mA
Foldback voltage threshold V
DD
rising 11 12.3 13.6 V
I
lkg
Leakage current V
DD
= V
RTN
= 100 V, DEN = V
SS
40 mA
UVLO
UVLO_R V
DD
rising 33.9 35 36.1
Undervoltage lockout threshold V
UVLO_H Hysteresis
(1)
4.4 4.55 4.7
(1) The hysteresis tolerance tracks the rising threshold for a given device.
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