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參數(shù)資料
| 型號： | LM1851 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Ground Fault Interrupter |
| 中文描述： | 接地故障遮斷 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 165K |
| 代理商： | LM1851 |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Current
19 mA
Power Dissipation (Note 1)
1250 mW
Operating Temperature Range
b
40
§
C to
a
70
§
C
b
55
§
C to
a
150
§
C
Storage Temperature Range
Soldering Information
Dual-In-Line Package (10 sec.)
Small Outline Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
260
§
C
215
§
C
220
§
C
See AN-450 ‘‘Surface Mounting and Their Effects on Prod-
uct Reliability’’ for other methods of soldering surface
mount devices.
DC Electrical Characteristics
T
A
e
25
§
C, I
SS
e
5 mA
Parameter
Conditions
Min
Typ
Max
Units
Power Supply Shunt
Regulator Voltage
Pin 8, Average Value
22
26
30
V
Latch Trigger Voltage
Pin 7
15
17.5
20
V
Sensitivity Set Voltage
Pin 8 to Pin 6
6
7
8.2
V
Output Drive Current
Pin 1, With Fault
0.5
1
2.4
mA
Output Saturation Voltage
Pin 1, Without Fault
100
240
mV
Output Saturation Resistance
Pin 1, Without Fault
100
X
Output External Current
Sinking Capability
Pin 1, Without Fault,
V
pin 1
Held to 0.3V (Note 4)
2.0
5
mA
Noise Integration
Sink Current Ratio
Pin 7, Ratio of Discharge
Currents Between No Fault
and Fault Conditions
2.0
2.8
3.6
m
A/
m
A
AC Electrical Characteristics
T
A
e
25
§
C, I
SS
e
5 mA
Parameter
Conditions
Min
Typ
Max
Units
Normal Fault Current
Sensitivity
Figure 1 (Note 3)
3
5
7
mA
Normal Fault Trip Time
500
X
Fault,Figure 2 (Note 2)
18
ms
Normal Fault with
Grounded Neutral Fault
Trip Time
500
X
Normal Fault,
2
X
Neutral,Figure 2 (Note 2)
18
ms
Note 1:
For operation in ambient temperatures above 25
§
C, the device must be derated based on a 125
§
C maximum junction temperature and a thermal resistance
of 80
§
C/W junction to ambient for the DIP and 162
§
C/W for the SO Package.
Note 2:
Average of 10 trials.
Note 3:
Required UL sensitivity tolerance is such that external trimming of LM1851 sensitivity will be necessary.
Note 4:
This externally applied current is in addition to the internal ‘‘output drive current’’ source.
TL/H/5177–2
FIGURE 1. Normal Fault Sensitivity Test Circuit
2
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