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U4793B-FP 반도체 회로 부품 판매점

Overload Monitoring with Resistive Load/ VT = 44.5 mV



TEMIC Semiconductors 로고
TEMIC Semiconductors
U4793B-FP 데이터시트, 핀배열, 회로
U4793B
Overload Monitoring with Resistive Load, VT = 44.5 mV
Description
The IC U4793B in bipolar circuit, is designed to monitor
overload or a short circuit in automotive or industrial
applications. The threshold is tied to V4,6 = VS – VT
whereas VT = 44.5 mV. It is independent of the supply
voltage, VS. If the voltage drop across shunt resistor, Rsh,
exceeds this value, the output is turned on, otherwise the
output is turned off.
Without supply voltage or open input Pin 8, the output is
turned off. The output breakdown voltage is determined
by the Z-diodes Z3 and Z5 with a typical value of
VZ = 22 V.
A not used comparator input must be connected to Pin 7.
Features
D 10 kV – ESD protection
D Two comparators with common reference
D Tight threshold tolerance
D Constant threshold
D NPN output
D Interference and damage–protection
according to VDE 0839
D EMI protection
D Reversal polarity protection
D Load-dump protection
Ordering Information
Extended Type Number
U4793B
U4793B–FP
Block Diagram
Package
DIP8
SO8
Remarks
VS
2
7
Rsh Z2
4
+
Rsh
8
0.6 VS
+
VBatt
5 OUT1
&
Z5
6
Load
+
–&
1
R1 150 W
Figure 1. Schematic and application circuit
3 OUT2
Z3
95 10608
TELEFUNKEN Semiconductors
Rev. A2, 06-Mar-97
1 (5)


U4793B-FP 데이터시트, 핀배열, 회로
U4793B
Pin Description
GND 1
VS 2
OUT2 3
IN1 4
8
Input
switch
7 VRef
6 IN2
5 OUT1
95 10634
Pin Symbol
Function
1 GND Reference point, ground
2 VS Supply voltage
3 OUT2 Output 2
4 IN1 Input 1
5 OUT1 Output 1
6 IN2 Input 2
7 VRef Reference voltage
8 Input Input switch
Absolute Maximum Ratings
Parameters
Supply voltage
Current consumption
t = 2 ms, measured at Pin 1 (GND)
Output current
Input voltage
reference point Pin 7
Power dissipation
Tamb = 95 °C
Tamb = 60 °C
DIP 8
SO 8
DIP 8
SO 8
Ambient temperature range
Storage temperature range
Junction temperature
Thermal Resistance
Junction ambient
Parameters
DIP8
SO8
Pin 2, 7
Pin 1
Pin 3, 5
Pin 4, 6
Symbol
VS
I1
I3,5
–V4,6
Ptot
Ptot
Tamb
Tstg
Tj
Symbol
RthJA
RthJA
Value
16.5
1.5
20
6
420
360
690
560
–40 to +95
–55 to +125
150
Value
110
160
Unit
V
A
mA
V
mW
mW
°C
°C
°C
Unit
K/W
K/W
2 (5) TELEFUNKEN Semiconductors
Rev. A2, 06-Mar-97




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U4793B-FP

Overload Monitoring with Resistive Load/ VT = 44.5 mV - TEMIC Semiconductors



U4793B-FP

Overload Monitoring with Resistive Load/ VT = 44.5 mV - TEMIC Semiconductors