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| 型号： | MAX5945CAX+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/44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
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(Voltages referenced to VEE, unless otherwise noted.)
AGND, DGND, DET_, VDD, RESET, A3, A2, A1, A0, SHD_,
OSC_IN, SCL, SDAIN, OUT_ and AUTO............-0.3V to +80V
GATE_ (internally clamped, Note 1)....................-0.3V to +11.4V
SENSE_ ..................................................................-0.3V to +24V
VDD, RESET, A3, A2, A1, A0, SHD_, OSC_IN, SCL, SDAIN and
AUTO to DGND ....................................................-0.3V to +7V
INT and SDAOUT to DGND....................................-0.3V to +12V
Maximum Current into INT, SDAOUT, DET_ .......................80mA
Maximum Power Dissipation
36-Pin SSOP (derate 11.4mW/°C above +70°C) .........941mW
Operating Temperature Ranges:
MAX5945EAX ..................................................-40°C to +85°C
MAX5945CAX .....................................................0°C to +70°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(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
POWER SUPPLIES
VAGND
VAGND - VEE
32
60
VDGND
060
VDD to VDGND, VDGND = VAGND
1.71
5.50
Operating Voltage Range
VDD
VDD to VDGND, VDGND = VEE
3.0
5.5
V
IEE
OUT_ = VEE, SENSE_ = VEE, DET_ = AGND,
all logic inputs open, SCL = SDAIN = VDD,
INT and SDAOUT open; measured at AGND
in power mode after GATE_ pullup
4.2
6.8
Supply Currents
IDIG
All logic inputs high, measured at VDD
2.7
5.6
mA
GATE DRIVER AND CLAMPING
GATE_ Pullup Current
IPU
Power mode, gate drive on, VGATE = VEE (Note 2)
-40
-50
-60
A
Weak GATE_ Pulldown Current
IPDW
SHD_ = DGND, VGATE_ = VEE + 5V
30
40
50
A
Maximum Pulldown Current
IPDS
VSENSE = 1V, VGATE_ = VEE + 2V
100
mA
External Gate Drive
VGS
VGATE - VEE , power mode, gate drive on
9
10
11
V
CURRENT LIMIT
Current-Limit Clamp Voltage
VSU_LIM
Maximum VSENSE_ allowed during current limit,
VOUT_ = VEE (Note 3)
202
212
220
mV
Default, class 0,
class 3, class 4
178.5
196
Class 1
49
61
Overcurrent Threshold After
Startup
VFLT_LIM
Overcurrent VSENSE_
threshold allowed for
t
≤ tFAULT after startup;
VOUT_ = VEE
Class 2
90
104
mV
Foldback Initial OUT_ Voltage
VFLBK_ST
VOUT_ - VEE, above which the current-limit trip
voltage starts folding back
30
V
Foldback Final OUT_ Voltage
VFLBK_END
VOUT_ - VEE, above which the current-limit trip
voltage reaches VTH_FB
50
V
Note 1: GATE_ is internally clamped to 11.4V above VEE. Driving GATE_ higher than 11.4V above VEE may damage the device.
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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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