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参数资料
| 型号： | MAX5935EAX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/44页 |
| 文件大小： | 700K |
| 描述： | IC CTRLR POWER QUAD 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 类型： | 以太网供电控制器（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 无 |
| 电源电压： | -32 V ~ -60 V |
| 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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Quad Network Power Controller
for Power-Over-LAN
______________________________________________________________________________________ 11
PIN
NAME
FUNCTION
1
RESET
Hardware Reset. Pull RESET low for at least 300祍 to reset the device. All internal registers reset to
their default value. The address (A0A3), and AUTO and MIDSPAN input logic levels latch on during
low-to-high transition of RESET. Internally pulled up to V
DD
with a 50k& resistor.
2
MIDSPAN
MIDSPAN Mode Input. An internal 50k& pulldown resistor to DGND sets the default mode to endpoint
PSE operation (power-over-signal pairs). Pull MIDSPAN TO VDIG to set MIDSPAN operation. The
MIDSPAN value latches after the IC is powered up or reset (see the PD Detection section).
3
INT
Open-Drain Interrupt Output. INT goes low whenever a fault condition exists. Reset the fault condition
using software or by pulling RESET low (see the Interrupt section of the Detailed Description for more
information about interrupt management).
4
SCL
Serial Interface Clock Line
5
SDAOUT
Serial Output Data Line. Connect the data line optocoupler input to SDAOUT (see the Typical
Application Circuit). Connect SDAOUT to SDAIN if using a 2-wire I
2
C-compatible system.
6
SDAIN
Serial Interface Input Data Line. Connect the data line optocoupler output SDAIN (see the Typical
Application Circuit). Connect SDAIN to SDAOUT if using a 2-wire wire I
2
C-compatible system.
71
A3, A2, A1, A0
Address Bit. A3, A2, A1, and A0 form the lower part of the devices address. Address inputs default
high with an internal 50k& pullup resistor to V
DD
. The address values latch when V
DD
or V
EE
ramps
up and exceeds its UVLO threshold or after a reset. The 3 MSB bits of the address are set to 010.
1114
DET1, DET2,
DET3, DET4
Detection and Classification Voltage Output. Use DET1 to set the detection and classification probe
voltages on port 1. Use DET1 for the AC voltage sensing of port 1 when using the AC disconnect
scheme (see the Typical Application Circuit).
15
DGND
Connect to Digital Ground
16
V
DD
Positive Digital Supply. Connect to digital supply (referenced to DGND).
172
SHD1, SHD2,
SHD3, SHD4
Port Shutdown Input. Pull SHD_ low to turn-off the external FET on port_. Internally pulled up to V
DD
with a 50k& resistor.
21
AGND
Analog Ground. Connect to the high-side analog supply.
22, 25,
2
2
SENSE4, SENSE3,
SENSE2, SENSE1
MOSFET Source Current-Sense Negative Input. Connect to the source of the power MOSFET and
connect a current-sense resistor between SENSE_ and V
EE
(see the Typical Application Circuit).
23, 26,
GATE4, GATE3,
GATE2, GATE1
Port_ MOSFET Gate Driver. Connect GATE_ to the gate of the external FET (see the Typical
Application Circuit).
24, 27,
1 4
OUT4, OUT3,
OUT2, OUT1
MOSFET Drain-Output Voltage Sense. Connect OUT_ to the power MOSFET drain through a resistor
(100& to 100k&). The low leakage at OUT_ limits the drop across the resistor to less than 100mV
(see the Typical Application Circuit).
28
V
EE
Low-Side Analog Supply Input. Connect the low-side analog supply to V
EE
(-48V). Bypass with a 1礔
capacitor between AGND and V
EE
.
35
AUTO
AUTO or SHUTDOWN Mode Input. Force high to enter AUTO mode after a reset or power-up. Drive
low to put the MAX5935 into SHUTDOWN mode. In SHUTDOWN mode, software controls the
operational modes of the MAX5935. A 50k& internal pulldown resistor defaults AUTO low. AUTO
latches when V
DD
or V
EE
ramps up and exceeds its UVLO threshold or when the device resets.
Software commands can take the MAX5935 out of AUTO while AUTO is high.
36
OSC_IN
Oscillator Input. AC-disconnect detection function uses OSC_IN. Connect a 100Hz ?0%, 2V
P-P
?%, +1.2V offset sine wave to OSC_IN. If the oscillator positive peak falls below OSC_FAIL
threshold of 2V, the ports that have the AC function enabled shut down and are not allowed to power
up. When not using the AC-disconnect detection function, leave OSC_IN unconnected.
Pin Description
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5935EAX+ | 功能描述:热插拔功率分布 Quad Network Power 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 |
| MAX5935EAX+T | 功能描述:热插拔功率分布 Quad Network Power 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 |
| MAX5935EAX-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 |
| MAX5936AAESA | 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 |
| MAX5936AAESA+ | 功能描述:热插拔功率分布 48V- Hot-Swap 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 |
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