参数资料
型号: NCP1080DEG
厂商: ON Semiconductor
文件页数: 9/15页
文件大小: 221K
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:
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
NCP1080
http://onsemi.com
9
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Min.
Typ.
Max.
Units
Conditions
ERROR AMPLIFIER
Vbg_fb
Reference voltage
1.15
1.2
1.25
V
Voltage with respect to ARTN
Av_ol
DC open loop gain

80

dB
For information only
GBW
Error amplifier GBW
1


MHz
For information only
SOFTSTART
Vss
Softstart voltage range

1.15

V
Vss_r
Softstart low threshold (rising edge)
0.35
0.45
0.55
V
Iss
Softstart source current
3
5
7
mA
CURRENT LIMIT COMPARATOR
CSth
CS threshold voltage
324
360
396
mV
Tblank
Blanking time

100

ns
For information only
OSCILLATOR
DutyC
Maximum duty cycle

80%

Fixed internally
Frange
Oscillator frequency range
100

500
kHz
F_acc
Oscillator frequency accuracy
?5
%
CURRENT CONSUMPTION
IvportP
1
VPORTP internal current consumption
(Note 10)

2.5
3.5
mA
DCDC controller off
IvportP
2
VPORTP internal current consumption
(Note 11)

4.7
6.5
mA
DCDC controller on
THERMAL SHUTDOWN
TSD
Thermal shutdown threshold
150


癈 Tj
T
J
 = junction temperature
Thyst
Thermal hysteresis

15

癈 Tj
T
J
 = junction temperature
THERMAL RATINGS
T
A
Ambient temperature
40

85
T
J
Junction temperature


125
150
Parametric values guaranteed
Max 1000 hours
10.Conditions
a. No current through the passswitch
b. DCDC controller inactive (SS shorted to RTN)
c. No external load on VDDH and VDDL
d. VPORTP = 57 V
11.Conditions
a. No current through the passswitch
b. Oscillator frequency = 100 kHz
c. No external load on VDDH and VDDL
d. Aux winding not used
e. 2 nF on GATE, DCDC controller enabled
f. VPORTP = 57 V
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