參數(shù)資料
型號(hào): MAX5953DUTM+
廠商: Maxim Integrated
文件頁(yè)數(shù): 6/27頁(yè)
文件大小: 371K
描述: IC INTERFACE 802.3AF 48TQFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 43
類(lèi)型: 以太網(wǎng)供電開(kāi)關(guān)(PoE)
應(yīng)用: 遠(yuǎn)程外設(shè)(工業(yè)控制,相機(jī),數(shù)據(jù)訪(fǎng)問(wèn))
內(nèi)部開(kāi)關(guān):
電源電壓: 11 V ~ 76 V
工作溫度: 0°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 48-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 48-TQFN-EP(7x7)
包裝: 管件
IEEE 802.3af PD Interface and PWM Controllers
with Integrated Power MOSFETs
6  _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (DC-DC Controller) (continued)
(All voltages referenced to GND, unless otherwise noted. V
HVIN
= +48V, C
INBIAS
= 1礔, C
REGOUT
= 2.2礔, R
RTCT
= 25k&, C
RTCT
=
100pF, C
BST
= 0.22礔, V
CSS
= V
CS
= 0V, V
RAMP
= V
DCUVLO
= 3V, T
J
= 0癈 to +125癈, unless otherwise noted. Typical values are at
T
J
= +25癈, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
NIT
UNDERVOLTAGE LOCKOUT (DCUVLO)
Threshold Voltage
V
REF DCUVLO
V
DCUVLO
 rising
1.14
1.26
1.38
V
Hysteresis
V
HYS DCUVLO
140
mV
Input Bias Current
I
IN,DCUVLO
V
DCUVLO
 = 3V
-100
+100
nA
SUPPLY CURRENT
From V
HVIN
 = 11V to 76V,
V
CSS
 = 0V, V
INBIAS
 = 11V
0.7
1.5
From V
INBIAS
 = 11V to 76V,
V
CSS
 = 0V, V
HVIN
 = 76V
4.4
6.4
Supply Current
From V
HVIN
 = 76V, V
OPIO
 = 4V
7
mA
Standb Su   l Current
V
D   VL
 = 0V
1
mA
Note 1:   Limits at 0?/SPAN>C are guaranteed by design, unless otherwise noted.
Note 2:   The input offset current is illustrated in Figure 1.
Note 3:   Effective differential input resistance is defined as the differential resistance between V+ and V
EE
without any external
resistance.
Note 4:   Classification current is turned off whenever the IC is in power mode.
Note 5:   See Table 2 in the Classification Mode section. R
DISC
and R
RCLASS
must be 1%, 100ppm or better. I
CLASS
includes the IC
bias current and the current drawn by R
DISC
.
Note 6:   See the Thermal Dissipation section.
Note 7:   When UVLO is connected to the midpoint of an external resistor-divider with a series resistance of 25.5k& (?/SPAN>1%), the turn-
on threshold set point for the power mode is defined by the external resistor-divider. Make sure the voltage on UVLO does
not exceed its maximum rating of 8V when V
IN
is at the maximum voltage.
Note 8:   When V
UVLO
is below V
TH,G,UVLO
, the MAX5953A/MAX5953C set the turn-on voltage threshold internally (V
UVLO,ON
).
Note 9:   An input voltage or V
UVLO
glitch below their respective thresholds shorter than or equal to t
OFF_DLY
does not cause the
MAX5953A/MAX5953B/MAX5953C/MAX5953D to exit power-on mode (as long as the input voltage remains above an
operable voltage level of 12V).
Note 10: Guaranteed by design, not tested in production for MAX5953B/MAX5953D.
Note 11: PGOOD references to OUT while PGOOD references to V
EE
.
Note 12: Output switching frequency is 
1
/
2
oscillator frequency.
Figure 1. Effective Differential Input Resistance/Offset Current
I
IN
I
INi + 1
I
INi
I
OFFSET
dR
i
1V
V
INi
V
INi + 1
I
OFFSET
 E I
INi
 -
V
INi
dR
i
dR
i
 E
(V
INi + 1
 - V
INi
)
 =
1V
 
(I
INi + 1
 - I
INi
)
 
(I
INi + 1
 - I
INi
)
V
IN
相關(guān)PDF資料
PDF描述
MAX5954LETX+T IC PCI EXP/HOT-PLUG CTRLR 36TQFN
MAX5955BEEE+ IC DUAL HOT-SWAP CTRLR 16-QSOP
MAX5957AETN+T IC TRPL PCI EXP/HOT-PLUG 56-TQFN
MAX5960AECS+T IC CTRLR HOT-PLUG QD 80-TQFP
MAX5963UTL+T IC HOT SWAP DIO ORING CTL 40TQFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5953DUTM+ 功能描述:電壓模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX5953DUTM+T 功能描述:電壓模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX5954AETX+ 功能描述:熱插拔功率分布 Single PCIe Hot Plug Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5954AETX+T 功能描述:熱插拔功率分布 Single PCIe Hot Plug Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5954LETX+ 功能描述:熱插拔功率分布 Single PCIe Hot Plug Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube