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参数资料
| 型号： | NCP1083DEG |
| 厂商： | ON Semiconductor |
| 文件页数： | 10/18页 |
| 文件大小： | 257K |
| 描述： | IC CONV CTLR POE-PD 40W 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： | 1.1A |
| 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 |
NCP1083
http://onsemi.com
10
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
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
For information only
100
ns
OSCILLATOR
DutyC
Maximum duty cycle
Fixed internally
80%
Frange
Oscillator frequency range
100
500
kHz
F_acc
Oscillator frequency accuracy
?5
%
CURRENT CONSUMPTION
IvportP
1
VPORTP internal current consumption
(Note 14)
DCDC controller off
2.5
3.5
mA
IvportP
2
VPORTP internal current consumption
(Note 15)
DCDC controller on
4.7
6.5
mA
THERMAL SHUTDOWN
TSD
Thermal shutdown threshold
Tj = junction temperature
150
癈 Tj
Thyst
Thermal hysteresis
Tj = junction temperature
15
癈 Tj
THERMAL RATINGS
T
A
Ambient temperature
40
85
癈
T
J
Junction temperature
Parametric values guaranteed
Max 1000 hours
125
150
癈
癈
14.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
15.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
Figure 6. (Ivddl_load)max with Auxiliary
Supply Operation
Figure 7. (Ivddh_load+Ivddl_load)max with
Auxiliary Supply Operation
VPORTPARTN VOLTAGE DURING PWM
OPERATION (V)
VPORTPARTN VOLTAGE DURING PWM
OPERATION (V)
13
12
11.5
11
10.5
10
9.0
8.5
4.0
4.5
5.0
6.5
7.5
8.5
9.5
10.5
0.50
0.75
1.00
1.25
1.75
2.00
2.25
2.50
9.5
12.5
13.5
5.5
6.0
7.0
8.0
9.0
10.0
13
12
11.5
11
10.5
10
9.0
8.5
9.5
12.5
13.5
1.50
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