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參數(shù)資料
| 型號(hào)： | MAX5984DETI+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CTRLR PD IEEE W/MOSFT 28TQFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | * |
2 ______________________________________________________________________________________
MAX5984
Single-Port, 40W, IEEE 802.3af/802.3at PSE
Controller with Integrated MOSFET
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.
(Voltages referenced to VEE, unless otherwise noted.)
AGND, DET, LED ..................................................-0.3V to +80V
OUT ......................................................-0.3V to (VAGND + 0.3V)
OUTP.......................................................-6V to (VAGND + 0.3V)
VEE_DIG...............................................................-0.3V to +0.3V
OSC.........................................................................-0.3V to +6V
EN, 2-EVENT/PWMEN/LSCEN, MIDSPAN,
LEGACY, ILIM1, ILIM2..........................................-0.3V to +4V
Maximum Current Into LED................................................40mA
Maximum Current Into OUT .........................Internally regulated
Continuous Power Dissipation (TA = +70NC)
TQFN (derate 34.5mW/NC above +70NC)...............2758.6mW
Operating Temperature Range.......................... -40NC to +85NC
Storage Temperature Range............................ -65NC to +150NC
Junction Temperature .....................................................+150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
ELECTRICAL CHARACTERISTICS
(VAGND - VEE = 32V to 60V, TA = -40NC to +85NC, all voltages are referenced to VEE, unless otherwise noted. Typical values are at
VAGND - VEE = 54V, TA = +25NC. Currents are positive when entering the pin and negative otherwise.) (Note 2)
ABSOLUTE MAXIMUM RATINGS
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
TQFN
Junction-to-Ambient Thermal Resistance .......................29NC
Junction-to-Case Thermal Resistance ..............................2NC
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLIES
Operating Voltage Range
VAGND
VAGND - VEE
32
60
V
Supply Current
IEE
VOUT = VEE, all logic inputs unconnected,
measured at AGND in power mode
2.5
4
mA
CURRENT LIMIT
Current Limit
ILIM
Maximum
ILOAD
allowed
during
current-limit
conditions,
VOUT = 0V
(Note 3)
Class 0, 1, 2, 3
400
420
441
mA
Class 4
684
720
756
Class 5 if ILIM1 = VEE, ILIM2
= unconnected
807
850
893
Class 5 if ILIM1 =
unconnected, ILIM2 = VEE
855
900
945
Class 5 if ILIM1 = VEE, ILIM2
= VEE
902
950
998
Foldback Initial OUT Voltage
VFLBK_ST
VAGND - VOUT below which the current
limit starts folding back
27
V
Foldback Final OUT Voltage
VFLBK_END
VAGND - VOUT below which the current
limit reaches ITH_FB
10
V
Minimum Foldback Current Limit
Threshold
ITH_FB
VOUT = VAGND
166
mA
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