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参数资料
| 型号： | MAX5965AUAX+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 31/54页 |
| 文件大小： | 1334K |
| 描述： | IC PSE CTRLR FOR POE 36SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 类型： | 以太网供电控制器（PoE） |
| 应用： | IP 电话，LAN 网络供电，网络路由器和交换机 |
| 内部开关： | 无 |
| 电源电压： | 2.4 V ~ 3.6 V |
| 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： | 带卷 (TR) |
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High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
______________________________________________________________________________________ 31
The MAX5965A/MAX5965B continuously monitor the
power supplies and set the appropriate bits in the sup-
ply event register (Table 12). V
DD_OV
/V
EE_OV
is set to 1
whenever 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 func-
tion. 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 MAX5965A/MAX5965B if the
temperature exceeds +150癈. TSD is set to 1 after the
MAX5965A/MAX5965B return 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
MAX5965A/MAX5965B are 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 00100001b if V
DD
comes up after V
EE
or
to 00010100b 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 |
|---|---|
| MAX5965BCAX+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5965BCAX+T | 制造商:Maxim Integrated Products 功能描述:HIGH-POWER, QUAD, MONOLITHIC, PSE CONTROLLERS FOR POWER OVER - Tape and Reel |
| MAX5965BEAX+ | 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 |
| MAX5965BEAX+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 |
| MAX5965BUAX+ | 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 |
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