MAX5942A Maxim, MAX5942A Datasheet - Page 3

• Manufacturer Part Number: MAX5942A
• Description: IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
unless otherwise noted. Typical values are at T
ELECTRICAL CHARACTERISTICS (PWM Controller)
(All voltages referenced to V-. V
SS_SHDN, NDRV = open circuit, V
UVLO Bias Current
UVLO Input Ground Sense
Threshold
UVLO Input Ground Sense Glitch
Rejection
Power Turn-Off Voltage,
Undervoltage Lockout Deglitch
Time
Isolation Switch N-Channel
MOSFET On-Resistance
Isolation Switch N-Channel
MOSFET Off-Threshold Voltage
GATE Pulldown Switch Resistance
GATE Charging Current
GATE High Voltage
PGOOD, PGOOD Assertion
V
PGOOD, PGOOD Assertion
V
PGOOD Output Low Voltage
PGOOD Output Low Voltage
PGOOD Leakag e C ur r ent
PGOOD Leakag e C ur r ent
SUPPLY CURRENT
V+ Supply Current
V+ Supply Current After Startup
IN
OUT
GATE
= (GND - V
Threshold
Threshold
PARAMETER
PARAMETER
Interface/PWM Controller for Power Devices
EE
) = 48V, GATE = PGOOD = PGOOD = OPEN, V- tied to OUT, V+ tied to GND, UVLO = V
_______________________________________________________________________________________
DD
FB
= 13V, a 10µF capacitor connects V
= 3V, T
SYMBOL
V
SYMBOL
V
I
TH,G,UVLO
t
V+(NS)
V
I
OFF_DLY
OLDCDC
IEEE 802.3af Power-Over-Ethernet
V
V
V+(S)
V
I
OUTEN
UVLO
R
GSTH
GSEN
GATE
R
I
ON
G
G
A
= T
A
= +25°C. All voltages are referenced to V
V
V+ = 67V, V
switching
V+ = 67V, V
MIN
UVLO = 2.460V
(Note 8)
UVLO = V
V
Output current =
300mA, V
measured between
OUT and V
OUT = GND, V
< 1µA
Power-off mode, V
V
I
V
V
Hysteresis
(GATE - V
Hysteresis
I
I
GATE = hi g h, GN D - V
GATE = V
DD
GATE
SINK
SINK
IN
GATE
OUT
GATE
, V
to T
= 0V, V+ = 67V, driver not switching
= 2mA (Note 10)
= 2mA, OUT ≤ (GND - 5V) (Note 10)
UVLO
- V
= 1µA
= 2V
= 5.75V
MAX
EE
E E
GATE
EE
EE
DD
DD
EE
, |V
, unless otherwise noted. Typical values are at T
, P GOOD - V
falling (Note 9)
) increasing, OUT = V
OUT
CONDITIONS
= 0V, V
= 13V, V
CONDITIONS
GATE
= 5.6V,
IN
- V
- V
= 12V, UVLO = V
OU T
EE
FB
CC
FB
EE
T
(Note 11)
T
| decreasing,
E E
= 4V, driver
A
A
to V-, V
= 67V ( N ote 10)
, output current
= 4V
= 67V ( N ote 10)
= +25°C
= +85°C
CS
EE
= V-, V+ = 48V, 0.1µF capacitor connected to
EE
EE
, unless otherwise noted.) (Note 1)
MIN
0.32
5.58
1.15
4.62
MIN
-1.5
0.5
50
5
TYP
5.76
1.23
4.76
TYP
0.6
0.8
0.8
1.6
38
10
70
80
14
7
EE
A
= +25°C.) (Note 1)
, T
A
MAX
MAX
+1.5
5.93
1.31
4.91
440
1.1
1.5
0.4
0.2
1.6
3.2
= T
80
15
1
1
MIN
to T
UNITS
UNITS
mA
mV
ms
mV
mV
µA
µA
µA
µA
µA
µs
Ω
Ω
V
V
V
V
V
V
MAX
3
,