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参数资料
| 型号： | MAX5952CUAX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 29/50页 |
| 文件大小： | 1006K |
| 描述： | IC PSE CNTRLR FOR POE 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 |
| 工作温度： | 0°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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High-Power, Quad, PSE Controller
for Power-Over-Ethernet
______________________________________________________________________________________ 29
The MAX5952 continuously monitors the power sup-
plies and sets the appropriate bits in the supply event
register (Table 12). V
DD_OV
/V
EE_OV
is set to 1 whenev-
er V
DD
/V
EE
exceeds its overvoltage threshold.
V
DD_UV
/V
EE_UV
is set to 1 whenever V
DD
/V
EE
falls
below its undervoltage threshold.
OSC_FAIL is set to 1 whenever the amplitude of the
oscillator signal at the OSC_ input falls below a level
that might compromise the AC disconnect detection
function. OSC_FAIL generates an interrupt only if at
least one of the ACD_EN (R13h[7:4]) bits is set high.
A thermal shutdown circuit monitors the temperature of
the die and resets the MAX5952 if the temperature
exceeds +150癈. TSD is set to 1 after the MAX5952
returns to normal operation. TSD is also set to 1 after
every UVLO reset.
When V
DD
and/or |V
EE
| is below its UVLO threshold, the
MAX5952 is in reset mode and securely holds all ports
off. When V
DD
and |V
EE
| rise to above their respective
UVLO thresholds, the device comes out of reset as
soon as the last supply crosses the UVLO threshold.
The last supply corresponding UV and UVLO bits in the
supply event register is 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 is cleared. A reset sets
R0Ah/R0Bh to 10100001b if V
DD
comes up after V
EE
or
to 10010100b if V
EE
comes up after V
DD
.
Table 12. Supply Event Register
ADDRESS =
0Ah
0Bh
SYMBOL
BIT
R/W
R/W
DESCRIPTION
TSD
7
R
CoR
Overtemperature shutdown
V
DD_OV
6
R
CoR
V
DD
overvoltage condition
V
DD_UV
5
R
CoR
V
DD
undervoltage condition
V
EE_UVLO
4
R
CoR
V
EE
undervoltage lockout condition
V
EE_OV
3
R
CoR
V
EE
overvoltage condition
V
EE_UV
2
R
CoR
V
EE
undervoltage condition
OSC_FAIL
1
R
CoR
Oscillator amplitude is below limit
V
DD_UVLO
0
R
CoR
V
DD
undervoltage lockout condition
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5952CUAX+ | 功能描述:热插拔功率分布 Quad PSE Controller for POE 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 |
| MAX5952CUAX+T | 功能描述:热插拔功率分布 Quad PSE Controller for POE 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 |
| MAX5952DEAX+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5952DEAX+T | 制造商:Maxim Integrated Products 功能描述:HIGH-POWER QUAD PSE CONTROLLER FOR - Tape and Reel |
| MAX5952DUAX+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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