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參數(shù)資料
| 型號： | NCP1081DEG |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 8/18頁 |
| 文件大小： | 257K |
| 描述： | IC CONV CTLR POE-PD 40W 20-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 74 |
| 類型： | 以太網(wǎng)供電開關(guān)（PoE） |
| 應(yīng)用： | 遠(yuǎn)程外設(shè)（工業(yè)控制，相機(jī)，數(shù)據(jù)訪問） |
| 內(nèi)部開關(guān)： | 是 |
| 電流限制： | 1.1A |
| 電源電壓： | 0 V ~ 57 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬）裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP-EP |
| 包裝： | 管件 |
NCP1081
http://onsemi.com
8
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Min.
Typ.
Max.
Units
Conditions
UVLO
Vuvlo_on
Default turn on voltage (VportP rising)
38
40
V
UVLO pin tied to VPORTN
1,2
Vuvlo_off
Default turn off voltage (VportP falling)
29.5
32
V
UVLO pin tied to VPORTN
1,2
Vhyst_int
UVLO internal hysteresis
6
V
UVLO pin tied to VPORTN
1,2
Vuvlo_pr
UVLO external programming range
25
50
V
UVLO pin connected to the
resistor divider (R1 & R2).
For information only
Vhyst_ext
UVLO external hysteresis
15
%
UVLO pin connected to the
resistor divider (R1 & R2)
Uvlo_Filter
UVLO on/off filter time
90
mS
For information only
PASSSWITCH AND CURRENT LIMITS
Ron
Passswitch Rdson
0.6
1.2
W
Max Ron specified at
Tj = 130癈
I_Rinrush1
Rinrush = 150 kW (Note 9)
95
125
155
mA
Measured at RTN
VPORTN
1,2
= 3 V
I_Rinrush2
Rinrush = 57.6 kW (Note 9)
260
310
360
mA
Measured at RTN
VPORTN
1,2
= 3 V
I_Rilim1
Rilim1 = 84.5 kW (Note 9)
450
510
570
mA
Current limit threshold
I_Rilim2
Rilim1 = 66.5 kW (Note 9)
600
645
690
mA
Current limit threshold
I_Rilim3
Rilim1 = 55.6 kW (Note 9)
720
770
820
mA
Current limit threshold
I_Rilim4
Rilim1 = 38.3 kW (Note 9)
970
1100
1230
mA
Current limit threshold
INRUSH AND ILIM1 CURRENT LIMIT TRANSITION
Vds_pgood
VDS required for power good status
0.8
1
1.2
V
RTNVPORTN
1,2
falling; Volt-
age with respect to VPORTN
1,2
Vds_pgood_hyst
VDS hysteresis required for power
good status
8.2
V
Voltage with respect to
VPORTN
1,2
9. The current value corresponds to the PoEPD input current (the current flowing in the external Rdet and the quiescent current of the device
are included). Resistors are assumed to have 1% accuracy.
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