+48V Quad Hot-Swap Controllers For
Power-Over-LAN
2  _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= V
CSP
_ = +48V, V
AGND
= V
DGND
= 0V, V
DD
= +3.3V, V
RLY
= +12V, T
A
= -40癈 to +85癈, unless otherwise noted. Typical val-
ues are at V
CC
= V
CSP
_ = +48V and T
A
= +25癈.)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to AGND or DGND..........................................-0.6V to +76V
DRAIN_, OUT_ to AGND or DGND .............-0.6V to (V
CC
+0.3V)
CSP_ to V
CC
..........................................................-0.3V to +0.3V
GATE_ to OUT_ .....................................................-0.3V to +13V
V
RLY
to DGND........................................................-0.3V to +18V
RLYD_ to DGND........................................-0.3V to (V
RLY
+ 0.3V)
ON_, RLYON_, OCEN, RTRYEN, STATOUT,
DC to DGND........................................................-0.3V to +12V
FAULT to DGND.....................................................-0.3V to +12V
STAT_, RTIM to DGND...............................-0.3V to (V
DD
+ 0.3V)
V
DD
to DGND ...........................................................-0.3V to +7V
DGND to AGND...........................................................-5V to +5V
Current into RLYD_ .........................................-50mA to +150mA
Current into Any Other Pin................................................?0mA
Continuous Power Dissipation (T
A
= +70癈)
44-Pin MQFP (derate 12.7mW/癈 above +70癈)......... 1.013W
Operating Temperature Range ...........................-40癈 to +85癈
Storage Temperature Range.............................-65癈 to +150癈
Lead Temperature (soldering, 10s)................................ +300癈
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX    UNITS
POWER SUPPLIES
Analog Supply Voltage
V
CC
Measured with respect to AGND
35
72
V
T
A
= 0癈 to +85癈
2.7
4
Analog Supply Current
I
S
V
CC
= V
CSP
_ = 72V
I
S
= I
CC
+ I
CSP
T
A
= -40癈 to 0癈
5
mA
Digital Supply Voltage
V
DD
Measured with respect to DGND
2.5
3.3
3.7
V
Digital Supply Current
I
DD
All logic outputs high, RTIM unconnected
1.1
3
mA
Analog Supply Undervoltage
Lockout
V
UVLO
V
CC
rising, circuits enabled
29
32
35
V
UVLO Hysteresis
V
UVLO H
3
V
UVLO Deglitch Delay
t
D UVLO
V
ON
= 3.3V, V
RLYON
= 3.3V (Figure 1)
12.8
25.6
38.4
ms
Relay Driver Supply
V
RLY
Measured with respect to DGND
14
V
Ground Potential Difference
V
GG
Voltage difference between DGND and AGND
-4
4
V
FEEDBACK INPUT AND CURRENT SENSE
OUT Sense Bias Current
I
FP
V
OUT
_ = V
CC
2
礎(chǔ)
Initial Feedback Voltage
V
FB
_
S
Voltage under which the foldback circuit
starts reducing the current-limit value
(Note 1)
18
V
Current-Limit Threshold Voltage
V
SC
Maximum V across R
SENSE
at V
OUT
> V
FB
_
S
125
142.5
160
mV
Foldback Voltage
V
FLBK
Maximum V across R
SENSE
at V
OUT
= 0V
42
48
54
mV
Fast Discharge Threshold
V
FC
360
420
480
mV
Switch-On Threshold
V
SWON
Maximum V
CC
- V
OUT
at which the switch is
defined as fully on, V
OUT
increasing
1.2
1.5
1.8
V
Switch-On Comparator Hysteresis    V
SWON
_
H
160
mV
MOSFET DRIVERS
V
GATE
- V
CC
when switch is fully on
0癈 to +85癈
7
9
11
Gate Overdrive Voltage
V
GS
T
A
= -40癈 to 0癈
7
9
12
V
Gate Charge Current
I
GATE
V
GATE
= 0V
7
10
13
礎(chǔ)