MAX5953A MAXIM [Maxim Integrated Products], MAX5953A Datasheet - Page 5

• Manufacturer Part Number: MAX5953A
• Description: IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (DC-DC Controller) (continued)
(All voltages referenced to GND, unless otherwise noted. V
100pF, C
T
SOFT-START (CSS)
Soft-Start Current
INTEGRATING FAULT PROTECTION
FLTINT Source Current
FLTINT Trip Point
FLTINT Hysteresis
INTERNAL POWER FETs
On-Resistance
Off-State Leakage Current
Total Gate Charge Per Power
FET
HIGH-SIDE DRIVER
Low to High Latency
High to Low Latency
Output Drive Voltage
LOW-SIDE DRIVER
Low to High Latency
High to Low Latency
CURRENT-LIMIT COMPARATOR (CS)
Current-Limit Threshold
Voltage
Current-Limit Input Bias
Current
Propagation Delay to XFRMRL
BOOST VOLTAGE CIRCUIT (See Figure 9, QB)
Driver Output Delay
One-Shot Pulse Width
QB R
THERMAL SHUTDOWN
Shutdown Temperature
Thermal Hysteresis
IEEE 802.3af PD Interface and PWM Controllers
J
= +25°C, unless otherwise noted.) (Note 1)
DSON
BST
PARAMETER
= 0.22µF, V
_______________________________________________________________________________________
CSS
= V
CS
= 0V, V
R
SYMBOL
ON,POWER
t
I
PPWMD
t
t
t
t
t
FLTINT
I
t
LH-HS
HL-HS
V
V
PWQB
LH-LS
HL-LS
I
BILIM
dILIM
T
CSS
T
BST
ILIM
SH
H
with Integrated Power MOSFETs
RAMP
= V
V
V
V
V
Driver delay until FET V
(V
Driver delay until FET V
(V
BST to XFRMRH with high side on
Driver delay until FET V
V
Driver delay until FET V
V
0 < V
From V
V
Sinking 20mA
Temperature rising
CSS
FLTINT
DRVIN
XFRMRH
DRVIN
DRVIN
XFRMRL
DCUVLO
BST
BST
CS
= 0V
- V
- V
CS
= V
and is fully on
and is fully off
rising
HVIN
< 0.3V
XFRMRH
XFRMRH
rising
= V
= 3V, T
rising (10mV overdrive) to
BST
SRC
= +48V, C
CONDITIONS
= 9V,
) and is fully on
) and is fully off
J
= 0V, I
= 0°C to +125°C, unless otherwise noted. Typical values are at
GS
GS
GS
GS
INBIAS
DS
reaches 0.9 x
reaches 0.1 x
reaches 0.9 x
reaches 0.1 x
= 50mA
= 1µF, C
REGOUT
MIN
140
-5
-2
= 2.2µF, R
+160
TYP
0.75
156
160
200
300
2.7
0.4
33
80
15
80
40
80
40
30
20
8
RTCT
= 25kΩ, C
MAX
+10
172
0.8
+2
60
UNITS
RTCT
mV
µA
µA
µA
nC
µA
ns
ns
ns
ns
ns
ns
ns
°C
°C
Ω
Ω
V
V
V
5
=