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| 型号： | MAX5953AUTM+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/27页 |
| 文件大小： | 371K |
| 描述： | IC INTERFACE 802.3AF 48TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 是 |
| 电源电压： | 11 V ~ 76 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（7x7） |
| 包装： | 带卷 (TR) |
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IEEE 802.3af PD Interface and PWM Controllers
with Integrated Power MOSFETs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= (V+ - V
EE
) = 48V, GATE = PGOOD = PGOOD = unconnected, GND = OUT, HVIN = V+, UVLO = V
EE
, T
J
= 0癈 to +125癈, unless
otherwise noted. Typical values are at T
J
= +25癈. All voltages are referenced to V
EE
, unless otherwise noted.) (Note 1)
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.
V+ to V
EE
................................................................-0.3V to +90V
OUT, PGOOD, PGOOD to V
EE
.....................-0.3V to (V+ + 0.3V)
RCLASS, GATE to V
EE
...........................................-0.3V to +12V
UVLO to V
EE
............................................................ -0.3V to +8V
PGOOD to OUT........................................... -0.3V to (V+ + 0.3V)
HVIN, INBIAS, DRNH, XFRMRH,
XFRMRL to GND.................................................-0.3V to +80V
BST to GND........................................................... -0.3V to +95V
BST to XFRMRH .................................................... -0.3V to +12V
PGND to GND .......................................................-0.3V to +0.3V
DCUVLO, RAMP, CSS, OPTO, FLTINT, RCFF,
RTCT to GND..................................................... -0.3V to +12V
SRC, CS to GND...................................................... -0.3V to +6V
REGOUT, DRVIN to GND.......................................-0.3V to +12V
REGOUT to HVIN .................................................. -80V to +0.3V
REGOUT to INBIAS ............................................... -80V to +0.3V
PPWM to GND....................................-0.3V to (V
REGOUT
+ 0.3V)
Maximum Input/Output Current (Continuous)
OUT to V
EE
....................................................................500mA
V+, RCLASS to V
EE
.........................................................70mA
UVLO, PGOOD, PGOOD to V
EE
.....................................20mA
GATE to V
EE
....................................................................80mA
REGOUT to GND ............................................................50mA
DRNH, XFRMRH, XFRMRL, SRC to GND (Average),
T
J
= +125癈..................................................................0.9A
PPWM to GND ..............................................................?0mA
Continuous Power Dissipation* (T
A
= +70癈)
48-Pin TQFN 7mm X 7mm
(derate 27.8mW/癈 above +70癈).............................2222mW
?/DIV>
JA
................................................................................36癈/W
Operating Ambient Temperature Range ................0癈 to +85癈
Operating Junction Temperature Range..............0癈 to +125癈
Junction Temperature......................................................+150癈
Storage Temperature Range.............................-60癈 to +150癈
Lead Temperature (soldering, 10s).................................+300癈
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
NIT
POWERED DEVICE (PD) INTERFACE
DETECTION MODE
Input Offset Current
I
OFFSET
V
IN
= 1.4V to 10.1V (Note 2)
10
礎
Effective Differential Input
Resistance (Note 3)
dR
V
IN
= 1.4V, up to 10.1V with 1V step
550
k&
CLASSIFICATION MODE
Classification Current Turn-Off
Threshold
V
TH CLASS
V
IN
rising (Note 4)
20.8
21.8
22.5
V
Class 0, R
RCLASS
= 10k&
0
2
Class 1, R
RCLASS
= 732&
9.17
11.83
Class 2, R
RCLASS
= 392&
17.29
19.71
Class 3, R
RCLASS
= 255&
26.45
29.55
Classification Current
I
CLASS
V
IN
= 12.6V
to 20V,
R
DISC
=
25.5k&
(Notes 5, 6)
Class 4, R
RCLASS
= 178&
36.6
41.4
mA
POWER MODE
Operating Supply Voltage
V
IN
V
IN
= (V+ - V
EE
)
67
V
Operating Supply Current
I
IN
Measure at V+, not including R
DISC
,
GATE = V
EE
, HVIN = GND = OUT
0.4
1
mA
MAX5953A/MAX5953C
37.4
38.6
40.2
Default Power Turn-On Voltage
V
UVLO ON
V
IN
increasing
MAX5953B/MAX5953D
34.3
35.4
36.9
V
Default Power Turn-Off Voltage
V
UVLO OFF
V
IN
decreasing, MAX5953A/MAX5953C
30
V
*As per JEDEC 51 standard.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5953BUTM+ | 功能描述:电压模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5953BUTM+T | 功能描述:电压模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5953CUTM+ | 功能描述:电压模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5953CUTM+T | 功能描述:电压模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5953DUTM+ | 功能描述:电压模式 PWM 控制器 IEEE 802.3af PD Int & PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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