MAX5986A MAXIM [Maxim Integrated Products], MAX5986A Datasheet - Page 4

• Manufacturer Part Number: MAX5986A
• Description: IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Converter
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(V
C1 = 68nF, C2 = 10µF, C3 = 1µF (see Figure 3), V
otherwise noted. T
Powered Devices with Integrated DC-DC Converter
V
Internal Current Duty Cycle
Internal Current Enable Time
Internal Current Disable Time
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
LDO (MAX5987A)
Input Voltage Range
Output Voltage
Max Output Voltage Setting
LDO FB Regulation Voltage
LDO FB Leakage Current
Dropout
Load Regulation
Line Regulation
Overcurrent Protection
Threshold
LDO_FB Rising Threshold
LDO_FB Hysteresis
DC-DC CONVERTER INPUT SUPPLY
V
WAD Detection Rising Threshold
WAD Detection Falling
Threshold
WAD Detection Hysteresis
POWER MOSFETs
High-Side pMOS On-Resistance
Low-Side nMOS On-Resistance
LX Leakage Current
SOFT-START (SS)
Soft-Start Time
DD
DD
DD
IEEE 802.3af-Compliant, High-Efficiency, Class 1,
= 48V, R
Current Amplitude
Voltage Range
PARAMETER
SIG
= 24.9kω, LED, V
A
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= T
J
= -40°C to +85°C, unless otherwise noted. Typical values are at T
CC
V
V
V
, SL, ULP, WK, RESET, LDO_OUT unconnected, WAD = LDO_EN = LDO_IN = PGND = GND,
V
SYMBOL
DD,FALLING
R
R
DD,RISING
T
WAD,FALL
WAD,RISE
I
t
D
DSON-H
LX-LKG
t
SD,HYS
DSON-L
MPDO
SS-TH
I
t
I
T
VDD
MPS
OVC
IVDD
SD
FB
Sleep mode, V
Sleep and ultra-low power modes
Ultra-low power mode
Ultra-low power mode
T
Inferred from line regulation
LDO_FB = V
With external divider to LDO_FB
V
I
I
VLDO_IN from 4.5V to 14V
V
V
(Note 9)
(Note 9)
I
I
V
V
LOAD
LOAD
LX
LX
J
LDO_IN
CC
CC
DD
LX
= V
rising
= 0.5A (sourcing)
= 0.5A (sinking)
= (V
= V
= V
= V
AUX
= 80mA
from 1mA to 80mA
DD
DD
CC
PGND
= 5V, V
= 0V, LX unconnected. All voltages are referenced to GND, unless
= V
= V
= 28V,
CONDITIONS
DRV
LED
+ 1V) to (V
WAD
WAD
LDO_FB
= 6.5V
+ 0.3V, rising
+ 0.3V, falling
MAX5986A/MAX5987A
= V
CC
DRV
- 1V)
,
A
= +25°C.) (Note 3)
MIN
205
4.5
8.7
7.6
5.8
10
76
-5
1.224
TYP
0.65
0.16
7.45
235
143
500
100
3.3
0.4
0.6
12
75
87
16
±1
3
2
1
MAX
14.5
1.01
0.33
265
5.5
8.8
+5
98
14
60
60
mV/mA
UNITS
mV/V
mA
mA
ms
ms
mV
ms
FA
FA
NC
NC
%
I
I
V
V
V
V
V
V
V
V
V
V