参数资料
型号: MAX5965AUAX+T
厂商: Maxim Integrated
文件页数: 5/54页
文件大小: 1334K
描述: IC PSE CTRLR FOR POE 36SSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
类型: 以太网供电控制器(PoE)
应用: IP 电话,LAN 网络供电,网络路由器和交换机
内部开关:
电源电压: 2.4 V ~ 3.6 V
工作温度: 0°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: 带卷 (TR)
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
_______________________________________________________________________________________   5
ELECTRICAL CHARACTERISTICS (continued)
(V
AGND
= 32V to 60V, V
EE
= 0V, V
DD
to V
DGND
= +3.3V, all voltages are referenced to V
EE
, unless otherwise noted. Typical values are at
V
AGND
= +48V, V
DGND
= +48V, V
DD
= (V
DGND
+ 3.3V), T
A
= +25癈. Currents are positive when entering the pin and negative other-
wise.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOAD DISCONNECT
DC Load Disconnect
Threshold
V
DCTH
Minimum V
SENSE_
 allowed before disconnect
(DC disconnect active), V
OUT_
 = 0V
2.5
3.75
5.0
mV
AC Load Disconnect
Threshold
I
ACTH
Current into DET_, for I < I
ACTH
 the port
powers off, ACD_EN_ bit = H; V
OSC
 = 2.2V,
MAX5965B (Note 6)
285
320
360
Oscillator Buffer Gain
A
OSC
V
DET_
/V
OSC
, ACD_EN_ bit = H, MAX5965B
2.9
3.0
3.1
V/V
OSC Fail Threshold
V
OSC_FAIL
Port does not power on if V
OSC
< V
OSC_FAIL
and ACD_EN_ bit is high, MAX5965B (Note 7)
1.8
2.2
V
OSC Input Impedance
Z
OSC
OSC input impedance when all the ACD_EN_
are active, MAX5965B
100
k&
Load Disconnect Timer
t
DISC
Time from V
SENSE_
 < V
DCTH
 to gate shutdown
(Note 8)
300
400
ms
DETECTION
Detection Probe Voltage
(First Phase)
V
DPH1
V
AGND
 - V
DET_
 during the first detection
phase
3.8
4
4.2
V
Detection Probe Voltage
(Second Phase)
V
DPH2
V
AGND
 - V
DET_
 during the second detection
phase
9.0
9.3
9.6
V
Current-Limit Protection
I
DLIM
V
DET_
 = V
AGND
, during detection, measure
current through DET_
1.5
1.8
2.2
mA
Short-Circuit Threshold
V
DCP
If V
AGND
 - V
OUT_
< V
DCP
 after the first
detection phase a short circuit to AGND is
detected
1
V
Open-Circuit Threshold
I
D_OPEN
First point measurement current threshold for
open condition
12.5
Resistor Detection Window
R
DOK
(Note 9)
19.0
26.5
k&
Detection rejects lower values
15.2
Resistor Rejection Window
R
DBAD
Detection rejects higher values
32
k&
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