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参数资料
| 型号： | MAX5922BEUI+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 10/21页 |
| 文件大小： | 437K |
| 描述： | IC NETWORK PWR SW +48V 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | 远程外设（工业控制，相机，数据访问） |
| 内部开关： | 是 |
| 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： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
+48V, Single-Port Network Power Switch
For Power-Over-LAN
10 ______________________________________________________________________________________
PIN
NAME
FUNCTION
*
AGND
Analog Ground. This is the return of analog power input. AGND can vary ?V from DGND. AGND and
DGND must be connected together at a single point in the system.
1, 2
DRAIN
Drain connection for the integrated MOSFET. Connect a sense resistor, R
SENSE
, from DRAIN to IN.
These pins are also the current-sense resistor negative terminal. R
SENSE
sets the overcurrent-limit
and open-circuit detection threshold. These two pins must be connected together.
3, 6, 26
N.C.
No Connection. Not internally connected. Leave pins 6 and 26 open. Pins 6 and 26 are left
unconnected to provide additional spacing between the high-voltage pins and other pins.
4
IN
Input Voltage. Connect to a positive voltage source between +32V to +60V from IN to AGND. This is
the current-sense resistor positive terminal. Bypass to AGND with a 47礔, 100V electrolytic capacitor
and a 0.1礔, 100V ceramic capacitor. Place the ceramic capacitor close to this pin.
5
RCL
Classification Sense Resistor. Connect a 150& ?% resistor from RCL to IN for sensing the
classification current. Leave RCL floating when the PD classification function is not used.
7
AGND_S
Analog Ground Sense. Connect a 1& resistor from AGND_S to AGND. This resistor protects the IC
during an output short-circuit condition.
8
UVLO
Undervoltage Lockout Adjustment Input. Referenced to AGND. Connect to the center point of a
resistive-divider from IN to AGND to adjust the UVLO threshold. Leave open for default value.
9
RDT
Detection Sense Resistor. Connect an 18.2k& ?% resistor from RDT to AGND for sensing the PD
detection current. Add a 680nF capacitor in parallel to this resistor to filter out the power-line noise.
Connect RDT to AGND when the PD detection function is not used.
10
FAULT
Fault Signal Open-Drain Logic Output. Reference to DGND. FAULT is latched low when:
1. An overtemperature condition occurs and/or,
2. An overcurrent condition that has lasted for more than t
OC
.
11
POK
Power-OK, Open-Drain Logic Output. Reference to DGND. POK goes open drain a time t
POK_HIGH
after V
OUT
raises to within V
THPOK
from V
IN
. POK goes low a time t
POK_LOW
after V
OUT
falls out of the
V
THPOK
from V
IN
.
12
ZC
Zero-Current Fault Signal. Open-drain logic output. Reference to DGND. ZC is latched low when there
is a zero-current condition lasting longer than t
ZCDEL
. ZC is open-drain otherwise. The zero-current
detection circuit is enabled immediately after the POK signal goes high. The ZC is unlatched after a
valid PD has been detected and eventually classified.
13
TP1
Must be Left Open or Connected to AGND
14
TP2
Must be Left Open or Connected to AGND
15
TP3
Must be Left Open or Connected to AGND
16
CL2
Classification Report Logic Output Bit 2. See the PD Classification section (Table 2).
17
CL1
Classification Report Logic Output Bit 1. See the PD Classification section (Table 2).
18
CL0
Classification Report Logic Output Bit 0. See the PD Classification section (Table 2).
19
DGND
Digital Ground. DGND can vary ?V from AGND. DGND and AGND must to be connected together at
a single point in the system.
20
LATCH
Fault Management Selection Digital Input. Referenced to DGND. Connect to a logic high to latch off
after a fault condition. Connect to a logic low for automatic restart after a fault condition (see the Fault
Management section).
Pin Description
*This is not a device pin.
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相关代理商/技术参数 |
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| MAX5922BEUI+ | 功能描述:热插拔功率分布 48V Single-Port Network Power Switch 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 |
| MAX5922BEUI+T | 功能描述:热插拔功率分布 48V Single-Port Network Power Switch 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 |
| MAX5922BEUI-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 |
| MAX5922CEUI | 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 |
| MAX5922CEUI+ | 功能描述:热插拔功率分布 48V Single-Port Network Power Switch 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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