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参数资料
| 型号： | MAX5945EAX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 41/44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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MAX5945
Quad Network Power Controller
for Power-Over-LAN
6
_______________________________________________________________________________________
Note 2: Default values. The charge/discharge currents are programmable through the serial interface (see the Register Map and
Description section).
Note 3: Default values. The current-limit thresholds are programmed through the I2C-compatible serial interface (see the Register
Map and Description section).
Note 4: This is the default value. Threshold can be programmed through serial interface R23h[2:0].
Note 5: AC disconnect works only if VDD - VDGND ≥ 3V.
Note 6: tDISC can also be programmed through the serial interface (R29h) (see the Register Map and Description section).
Note 7: RD = (VOUT_2 - VOUT_1) / (IDET_2 - IDET_1). VOUT_1, VOUT_2, IDET_2 and IDET_1 represent the voltage at OUT_ and the current
at DET_ during phase 1 and 2 of the detection.
Note 8: Default values. The startup and fault times can also be programmed through the I2C serial interface (see the Register Map
and Description section).
Note 9: Guaranteed by design. Not subject to production testing.
ANALOG SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX5945
toc01
INPUT VOLTAGE (V)
SUPPLY
CURRENT
(mA)
57
52
47
42
37
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
3.5
32
62
MEASURED AT AGND
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX5945
toc02
TEMPERATURE (°C)
SUPPLY
CURRENT
(mA)
60
35
10
-15
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
3.0
-40
85
DIGITAL SUPPLY CURRENT
vs. TEMPERATURE
MAX5945
toc03
TEMPERATURE (°C)
SUPPLY
CURRENT
(mA)
60
35
10
-15
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
-40
85
Typical Operating Characteristics
(VEE = -48V, VDD = +3.3V, AUTO = AGND = DGND = 0V, RESET = SHD_ = unconnected, RSENSE = 0.5, all registers = default setting,
TA = +25°C, unless otherwise noted.)
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
Setup Time for a Repeated
START Condition (Sr)
tSU, STA
(Note 9)
0.6
s
Data Hold Time
tHD, DAT
(Note 9)
0
150
ns
Data Setup Time
tSU, DAT
(Note 9)
100
ns
Rise Time of Both SDA and
SCL Signals, Receiving
tR
(Note 9)
20 + 0.1CB
300
ns
Fall Time of SDA Transmitting
tF
(Note 9)
20 + 0.1CB
300
ns
Setup Time for STOP Condition
tSU, STO
(Note 9)
0.6
s
Capacitive Load for Each Bus
Line
CB
(Note 9)
400
pF
Pulse Width of Spike
Suppressed
tSP
(Note 9)
50
ns
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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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