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| 型号： | MAX5942ACSE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/24页 |
| 文件大小： | 0K |
| 描述： | IC IEEE 802.3AF POE SYSTM 16SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 控制器类型： | 以太网供电控制器（POE） |
| 接口： | IEEE 802.3af |
| 电源电压： | 48V |
| 电流 - 电源： | 1mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
MAX5942A/MAX5942B
IEEE 802.3af Power-Over-Ethernet
Interface/PWM Controller for Power Devices
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (PWM Controller) (continued)
(All voltages referenced to V-. VDD = 13V, a 10F capacitor connects VCC to V-, VCS = V-, V+ = 48V, 0.1F capacitor connected to
SS_SHDN, NDRV = open circuit, VFB = 3V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IVDD(NS)
VDD = 36V, driver not switching
0.9
1.6
VDD Supply Current
IVDD(S)
VDD = 36V, driver switching, VOPTO = 4V
1.9
3.2
mA
V+ Shutdown Current
VSS_SHDN = 0V, V+ = 67V
180
290
A
VDD Shutdown Current
VSS_SHDN = 0V
4
20
A
PREREGULATORS/STARTUP
V+ Input Voltage
18
67
V
VDD Supply Voltage
13
36
V
INTERNAL REGULATORS
Powered from V+, ICC = 7.5mA, VDD = 0V
7.5
9.8
12
VCC Output Voltage
Powered from VDD, ICC = 7.5mA
9.0
10.0
11.0
V
VCC Undervoltage Lockout
VCC_UVLO
VCC falling
6.6
V
OUTPUT DRIVER
Peak Source Current
VCC = 11V (externally forced)
570
mA
Peak Sink Current
VCC = 11V (externally forced)
1000
mA
NDRV High-Side Driver
Resistance
ROH
VCC = 11V, externally forced, NDRV
sourcing 50mA
412
NDRV Low-Side Driver
Resistance
ROL
VCC = 11V, externally forced, NDRV sinking
50mA
1.6
4
ERROR AMPLIFIER
FB Input Resistance
RIN
50
k
FB Input Bias Current
IFB
VFB = VSS_SHDN
±1
A
Error Amplifier Gain (Inverting)
AVCL
-20
V/V
Closed-Loop 3dB Bandwidth
200
kHz
FB Input Voltage Range
23
V
SLOPE COMPENSATION
Slope Compensation
VSCOMP
MAX5942A
26
mV/s
THERMAL SHUTDOWN
Thermal Shutdown Temperature
+150
°C
Thermal Hysteresis
25
°C
CURRENT LIMIT
CS Threshold Voltage
VILIM
FB = 4V
419
465
510
mV
CS Input Bias Current
0V
≤ VCS ≤ 2V, FB = 4V
-1
+1
A
Current-Limit Comparator
Propagation Delay
25mV overdrive on CS, FB = V-
180
ns
CS Blanking Time
FB = GND, only PWM comparator is blanked
70
ns
OSCILLATOR
Clock Frequency Range
FB = V-
235
275
314
kHz
MAX5942A, FB = V-
75
85
Max Duty Cycle
MAX5942B, FB = V-
44
50
%
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5942AESE | 功能描述:电源开关 IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
| MAX5942AESE+ | 功能描述:输入/输出控制器接口集成电路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX5942AESE+T | 功能描述:输入/输出控制器接口集成电路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX5942AESE-T | 功能描述:电源开关 IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
| MAX5942BCSE | 功能描述:电源开关 IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
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