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参数资料
型号： NCP1082DEG
厂商： ON Semiconductor
文件页数： 8/17页
文件大小： 214K
描述： IC CONV CTLR POE-PD 13W 20-TSSOP
标准包装： 74
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
电流限制： 500mA
电源电压： 0 V ~ 57 V
工作温度： -40°C ~ 85°C
安装类型： 表面贴装
封装/外壳： 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘
供应商设备封装： 20-TSSOP-EP
包装： 管件
NCP1082
http://onsemi.com
8
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
AUXILIARY SUPPLY OPERATION  AUX PIN
Vaux_off
Voltage range of the AUX pin where the
auxiliary supply circuit is guaranteed not
operational.
Voltage with respect to
VPORTN
1,2.


0.2
V
Vaux_on
Voltage range of the AUX pin where the
auxiliary supply circuit is guaranteed
operational.
Voltage with respect to
VPORTN
1,2
1.5

3.3
V
Raux
Total resistance value of the resistor di-
vider connected to the AUX pin (sum of
R
aux1
 and R
aux3
)
Between VAUX supply &
VPORTN
1,2


25
kW
AUXILIARY SUPPLY OPERATION  VDDL REGULATOR
Ivddl_load1
Current load on the VDDL pin with
VPORTP  ARTN = 8.5 V (Notes 7 and 8)
Ivddh_load + Ivddl_load
< 4.5 mA


1
mA
Ivddl_load2
Current load on the VDDL pin with
VPORTP  ARTN > 12.5 V
(Notes 7 and 8)
Ivddh_load + Ivddl_load
< 10 mA


2.25
mA
AUXILIARY SUPPLY OPERATION  VDDH REGULATOR
Ivddh_load1
Current load on the VDDH regulator with
VPORTP  ARTN = 8.5 V (Notes 7 and 8)
Ivddh_load + Ivddl_load
< 4.5 mA


4.5
mA
Ivddh_load2
Current load on the VDDH regulator with
VPORTP  ARTN > 12.5 V
(Notes 7 and 8)
Ivddh_load + Ivddl_load
< 10 mA


10
mA
PASSSWITCH AND CURRENT LIMITS
Ron
Passswitch Rdson
Max Ron specified at
T
J
 = 130癈

0.6
1.2
W
I_Rinrush1
Rinrush = 150 kW (Note 9)
Measured at RTN
VPORTN
1,2
 = 3 V
95
125
155
mA
I_Rinrush2
Rinrush = 57.6 kW (Note 9)
Measured at RTN
VPORTN
1,2
 = 3 V
260
310
360
mA
I_Rilim1
Rilim1 = 84.5 kW (Note 9)
Current limit threshold
450
510
570
mA
INRUSH AND ILIM1 CURRENT LIMIT TRANSITION
Vds_pgood
VDS required for power good status
RTNVPORTNx falling; volt-
age with respect to
VPORTN
1,2
0.8
1
1.2
V
Vds_pgood_hyst
VDS hysteresis required for power good
status
Voltage with respect to
VPORTN
1,2

8.2

V
7.  Ivddl_load = current flowing out of the VDDL pin.
Ivddh_load = current flowing out of the VDDH pin + current delivered to the Gate Driver (function of the frequency, VDDH voltage & MOSFET
gate capacitance).
8.  See Figures 6 and 7 for specifications on the load current at lower or higher VPORTP-ARTN voltages. In case the application requires more
current capability on VDDL and VDDH, it is recommended to externally supply the VDDH pin with a bias winding from the transformer or
to add a diode between VAUX(+) and VDDH pin (verify the VAUX voltage does not exceed the VDDH voltage range).
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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NCP1082DER2G 功能描述:直流/直流开关转换器 POE-PD 13W DC-DC AUX SUPP RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
NCP1083 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Integrated High Power PoE-PD Interface & DC-DC Converter Controller with 9V Auxiliary Supply Support
NCP10-837R-D 制造商:Panduit Corp 功能描述:
NCP1083DEG 功能描述:DC/DC 开关控制器 POE-PD 40W DC-DC AUX SUPP RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
NCP1083DER2G 功能描述:DC/DC 开关控制器 POE-PD 40W DC-DC AUX SUPP RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
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