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参数资料
| 型号： | MAX5945EAX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/44页 |
| 文件大小： | 0K |
| 描述： | IC NETWORK PWR CTRL 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 控制器类型： | 网络电源控制器 |
| 接口： | I²C |
| 电源电压： | 3.3V |
| 电流 - 电源： | 4.2mA |
| 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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If the port remains in current limit or the PGOOD condi-
tion is not met at the end of the startup period, the port
shuts down and the corresponding STRT_FLT_ is set to
1. A 1 in any of the STRT_FLT_ bits forces R00h[6] to 1.
IVC_ is set to 1 whenever the port current exceeds the
maximum allowed limit for the class (determined during
the classification process). A 1 in any of IVC_ forces
R00h[6] to 1. When the CL_DISC (R17h[2]) is set to 1,
the port will also limit the load current according to its
class as specified in the Electrical Characteristics
table. As with any other events register, the startup
event register (Table 10) has two addresses. When
read through the R08h address, the content of the reg-
ister is left unchanged. When read through the CoR
R09h address, the register content will be cleared. A
reset sets R08h/R09h = 00h.
The MAX5945 continuously monitors the power supplies
and sets the appropriate bits in the supply event register
(Table 11). VDD_OV / VEE_OV is set to 1 whenever VDD /
VEE exceeds its overvoltage threshold. VDD_UV / VEE_UV
is set to 1 whenever VDD / VEE falls below its undervolt-
age 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
MAX5945
Quad Network Power Controller
for Power-Over-LAN
______________________________________________________________________________________
25
ADDRESS =
08h
09h
SYMBOL
BIT
R/W
DESCRIPTION
IVC4
7
R
CoR
Class overcurrent flag for port 4
IVC3
6
R
CoR
Class overcurrent flag for port 3
IVC2
5
R
CoR
Class overcurrent flag for port 2
IVC1
4
R
CoR
Class overcurrent flag for port 1
STRT_FLT4
3
R
CoR
Startup failed on port 4
STRT_FLT3
2
R
CoR
Startup failed on port 3
STRT_FLT2
1
R
CoR
Startup failed on port 2
STRT_FLT1
0
R
CoR
Startup failed on port 1
Table 10. Startup Event Register
ADDRESS =
0Ah
0Bh
SYMBOL
BIT
R/W
DESCRIPTION
TSD
7
R
CoR
Overtemperature shutdown
VDD_OV
6
R
CoR
VDD overvoltage condition
VDD_UV
5
R
CoR
VDD undervoltage condition
VEE_UVLO
4
R
CoR
VEE undervoltage lockout condition
VEE_OV
3
R
CoR
VEE overvoltage condition
VEE_UV
2
R
CoR
VEE undervoltage condition
OSC_FAIL
1
R
CoR
Oscillator amplitude is below limit
VDD_UVLO
0
R
CoR
VDD undervoltage lockout condition
Table 11. Supply Event Register
ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh
SYMBOL
BIT
R/W
DESCRIPTION
Reserved
7
R
Reserved
6
R
CLASS_[2]
5
R
CLASS_[1]
CLASS_
4
R
CLASS_[0]
Reserved
3
R
Reserved
2
R
DET_[2]
1
R
DET_[1]
DET_ST_
0
R
DET_[0]
Table 12. Port Status Registers
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5945EAX+ | 功能描述:热插拔功率分布 IEEE 802.3af Quad Net Pwr 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 |
| MAX5945EAX+T | 功能描述:热插拔功率分布 IEEE 802.3af Quad Net Pwr 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 |
| MAX5945EAX-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 |
| MAX5945EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit/Evaluation System for the MAX5945 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX5945EVSYS | 功能描述:电源管理IC开发工具 Evaluation Kit/Evaluation System for the MAX5945 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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