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参数资料
| 型号： | MAX5935EAX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 26/44页 |
| 文件大小： | 700K |
| 描述： | IC CTRLR POWER QUAD 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 类型： | 以太网供电控制器（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 无 |
| 电源电压： | -32 V ~ -60 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 管件 |
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crosses the UVLO threshold. The last supply corre-
sponding UV and UVLO bits in the supply event regis-
ter will be set to 1.
A 1 in any supply event registers bits forces R00h[7] to
1. As with any of the other events register, the supply
event register has two addresses. When read through
the R0Ah address, the content of the register is left
unchanged. When read through the CoR R0Bh
address, the register content will be cleared. A reset
sets R0Ah/R0Bh to 00100001 if V
DD
comes up after
V
EE
or to 00010100 if V
EE
comes up after V
DD
.
The port status register (Table 12) records the results of
the detection and classification at the end of each phase
in three encoding bits each. R0Ch contains detection
and classification status of port 1. R0Dh corresponds to
port 2, R0Eh corresponds to port 3, and R0Fh corre-
sponds to port 4. Tables 12a and 12b show the detec-
tion/classification result decoding charts, respectively.
As a protection, when POFF_CL (R17h[3], Table 20) is
set to 1, the MAX5935 prohibits turning on power to the
port that returns a status 111 after classification. A reset
sets 0Ch, 0Dh, 0Eh, and 0Fh = 00h.
PGOOD_ is set to 1 (Table 13) at the end of the power-up
startup period if the power-good condition is met (0 <
(V
OUT
- V
EE)
< PG
TH
). The power-good condition must
remain valid for more than t
PGOOD
to assert PGOOD_.
PGOOD_ is reset to 0 whenever the output falls out of the
power-good condition. A fault condition immediately
forces PGOOD_ low.
PWR_EN_ is set to 1 when the port power is turned on.
PWR_EN resets to 0 as soon as the port turns off. Any
transition of PGOOD_ and PWR_EN_ bits set the corre-
sponding bit in the power event registers R02h/R03h
(Table 7). A reset sets R10h = 00h.
A3, A2, A1, and A0 (Table 14) represent the four LSBs
of the MAX5935 address (Table 3). During a reset, the
devices latch into R11h. These four bits address from
the corresponding inputs as well as the state of the
MIDSPAN and AUTO inputs. Changes to those inputs
during normal operation are ignored.
The MAX5935 uses two bits for each port to set the mode
of operation (Table 15). Set the modes according to
Table 15a.
A reset sets R12h = AAAAAAAA where A represents
the latched-in state of the AUTO input prior to the reset.
Use software to change the mode of operation.
Software resets of ports (RESET_P_ bit, Table 22) do
not affect the mode register.
Setting DCD_EN_ to 1 enables the DC load disconnect
detection feature (Table 16). Setting ACD_EN_ to 1
enables the AC load disconnect feature. If enabled, the
load disconnect detection starts during power mode
and after startup when the corresponding PGOOD_ bit
in register R10h (Table 13) goes high. A reset sets
R13h = 0000AAAA, where A represents the latched-in
state of the AUTO input prior to the reset.
Quad Network Power Controller
for Power-Over-LAN
26 ______________________________________________________________________________________
DET_ST_ 2:0
DETECTED
DESCRIPTION
000
None
Detection status unknown.
001
DCP
Positive DC su l connected at the ort AGND - V
T
< 1.65V .
1
HIGH CAP
Hi h
i n
h
r
F .
011
RLOW
Low resistance at the ort. R
PD
< 17k&.
1
DET_OK
Detection pass. 17k& > R
PD
> 28k&.
1 1
RHIGH
Hi h r i n
h
r . R
2 k&.
110
OPEN0
O en ort I < 12.5 A .
111
DCN
N
iv D
l
nn
h
r V
- V
2V .
Table 12a. Detection Result Decoding Chart
CLASS_[2:0]
CLASS RESULT
000
Unknown
001
1
010
2
011
3
100
4
101
Undefined (treated as CLASS 0)
110
0
111
Current limit (>I
CILIM
)
Table 12b. Classification Result
Decoding Chart
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相关代理商/技术参数 |
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| MAX5935EAX+ | 功能描述:热插拔功率分布 Quad Network Power Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5935EAX+T | 功能描述:热插拔功率分布 Quad Network Power Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5935EAX-T | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936AAESA | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936AAESA+ | 功能描述:热插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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