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参数资料
| 型号： | MAX5945CAX+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 40/44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： | 1,000 |
| 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： | 0°C ~ 70°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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MAX5945
Quad Network Power Controller
for Power-Over-LAN
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(AGND = +32V to +60V, VEE = 0V, VDD to DGND = +3.3V, all voltages are referenced to VEE, unless otherwise noted. Typical
values are at AGND = +48V, DGND = +48V, VDD = (DGND + 3.3V), TA = +25°C. Currents are positive when entering the pin and
negative otherwise.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Internal Input Pullup/Pulldown
Resistor
RDIN
Pullup (pulldown) resistor to VDD (DGND) to set
default level
25
50
75
k
Open-Drain Output Low
Voltage
VOL
ISINK = 15mA
0.4
V
Open-Drain Leakage
IOL
Open-drain high impedance, VO = 3.3V
2
A
TIMING
Startup Time
tSTART
Time during which a current limit set by VSU_LIM
is allowed, starts when the GATE_
is turned on (Note 8)
50
60
70
ms
Fault Time
tFAULT
Maximum allowed time for an overcurrent
condition set by VFLT_LIM after startup (Note 8)
50
60
70
ms
Port Turn-Off Time
tOFF
Minimum delay between any port turning off,
does not apply in the case of a reset
0.5
0.75
1.0
ms
Detection Time
tDET
Maximum time allowed before detection
is completed
320
ms
Midspan Mode Detection
Delay
tDMID
2.0
2.4
s
Classification Time
tCLASS
Time allowed for classification
40
ms
VEEUVLO Turn-On Delay
tDLY
Time VAGND must be above the VEEUVLO
thresholds before the device operates
24
ms
RSTR bits = 00
16 x
tFAULT
RSTR bits = 01
32 x
tFAULT
RSTR bits = 10
64 x
tFAULT
Restart Timer
tRESTART
Time a port has to wait
before turning on after an
overcurrent fault,
RSTR_EN bit = high
RSTR bits = 11
0
ms
Watchdog Clock Period
tWD
Rate of decrement of the watchdog timer
164
ms
TIMING CHARACTERISTICS for 2-WIRE FAST MODE (Figures 5 and 6)
Serial Clock Frequency
fSCL
(Note 9)
400
kHz
Bus Free Time Between a
STOP and a START Condition
tBUF
(Note 9)
1.2
s
Hold Time for Start Condition
tHD, STA
(Note 9)
0.6
s
Low Period of the SCL Clock
tLOW
(Note 9)
1.2
s
High Period of the SCL Clock
tHIGH
(Note 9)
0.6
s
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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 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+ | 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 |
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