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| 型号： | MAX5935EAX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 29/44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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sets a minimum duty cycle that protects the external
MOSFET from overheating during prolonged output
overcurrent conditions.
A reset sets R16h = 00h.
Setting CL_DISC to 1 (Table 20) enables port-over-
class current protection, where the MAX5935 scales
down the overcurrent limit (V
FLT_LIM
) according to the
port classification status. This feature provides protec-
tion to the system against PDs that violate their maxi-
mum class current allowance.
A reset sets R17h = 0xC0.
Power-enable pushbutton (Table 21) for SEMI and
MANUAL modes. Setting PWR_ON_ to 1 turns on
power to the corresponding port. Setting PWR_OFF_ to
1 turns off power to the port. PWR_ON is ignored when
the port is already powered and during shutdown.
PWR_OFF is ignored when the port is already off and
during shutdown. After execution, the bits reset to 0.
During detection or classification if PWR_ON_ goes
high, the MAX5935 gracefully terminates the current
operation and turn-on power to the port. The MAX5935
ignores the PWR_ON_ in AUTO mode. A reset sets
R19h = 00h.
Quad Network Power Controller
for Power-Over-LAN
______________________________________________________________________________________ 29
ADDRESS = 15h
SYMBOL
BIT
R/W
DESCRIPTION
Reserved
7
R
Reserved
Reserved
6
R
Reserved
Reserved
5
R
Reserved
Reserved
4
R
Reserved
BCKOFF4
3
R/W Enable Cadence timing on Port 4
BCKOFF3
2
R/W Enable Cadence timing on Port 3
BCKOFF2
1
R/W Enable Cadence timing on Port 2
BCKOFF1
0
R/W Enable Cadence timing on Port 1
Table 18. Backoff Enable Register
ADDRESS = 16h
SYMBOL
BIT
R/W
DESCRIPTION
RSTR 1
7
R/W
Restart timer ro rammin bit 1
R TR
6
R/W
R
r im r r r mmin i
TSTART 1
5
R/W
Startu timer ro rammin bit 1
T TART
4
R/W
r
im r r r mmin i
TFA LT 1
3
R/W
v r rr n im r r r mmin i 1
TFAULT 0
2
R/W
Overcurrent timer ro rammin bit 0
TDI
1
1
R/W
L
i nn
im r r r mmin i 1
TDISC 0
0
R/W
Load disconnect timer ro rammin bit 0
Table 19. Timing Register
Bit[1:0]
RSTR
t
DISC
t
START
t
FAULT
00
16 x t
FAULT
t
DISC
nominal
(350ms, typ)
t
START
nominal
(60ms, typ)
t
FAULT
nominal
(60ms, typ)
01
32 x t
FAULT
1/4 x t
DISC
nominal
1/2 x t
START
nominal
1/2 x t
FAULT
nominal
10
64 x t
FAULT
1/2 x t
DISC
nominal
2 x t
START
nominal
2 x t
nominal
11
0 x t
FAULT
2 x t
DISC
nominal
4 x t
START
nominal
4 x t
FA LT
nominal
Table 19a. Startup, Fault, and Load Disconnect Timers with Default Values in the
Register 27h and 28h
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| 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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