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Datasheet: MLX12101 (Melexis, Inc.)

Sensor Protection ic

 

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3901012101
Page 1
Oct/02
Rev. 002

s
Small Package (SOT-23)
s
Low Dropout Voltage (typical 30mV)
s
Large Temperature Range
s
Overvoltage protection
s
Reverse Polarity Protection
s
Low Supply Current
s
Sensor Over voltage Protection
s
Sensor Reverse Polarity Protection
Part No.
Temperature Suffix
Package
MLX12101
E (-40
o
C to 125
o
C)
SO (SOT-23)
This integrated circuit serves as a protection
circuit where sensitive 5V IC's are supplied by
long wires that can be short-circuited to the wiring
harness of a car. The device is connected
between the 5V input, the 5V output and the
system ground.
When the 5V input is below 5.5 Volts, the switch
between 5V input and 5V output is closed. When
the 5V input goes above 6.7 Volt (This case
occurs when the supply wire is short-circuited to
battery plus), the output is shut off. When the 5V
input goes negative ( this is the case when the
battery is reversed), a reverse polarity diode pre-
vents the 5V output from going negative
.
Note:
Static sensitive device, please observe ESD
precautions.
3901012101
Page 2
Oct/02
Rev. 002
!
DC Operating Parameters T
A
= -40
o
C to 125
o
C, V
DD
= 5V (unless otherwise specified
)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Recommended Operating Conditions
Input Voltage
V
IN
4.5
5.0
5.5
V
Output Current
I
OUT
8
mA
Output Signal Specifications
Switch-Off Time (V
OU
<5V)
t
off
V
in
jump from 5V to 12V
150
1000
S
Reverse Current
I
R
Though V
OUT
with V
DD
and V
SS
connected
5
mA
Reverse Output Voltage
V
Rout
V
SS
-1
V
Voltage Drop-out,
V
OUT
-V
IN
V
D
V
IN
= 4.5V, I
OUT
= 8mA
55
mV
General Specifications
Overall Supply Current
I
supply
No Load
500
A
Switch-off Voltage
V
t
V
IN
= 4.5V, I
OUT
= 8mA
5.5
6.8
V
"
#
$
Parameter
Value
Unit
Comment
Max Operating Voltage Range
-14 to 16
V
Max Output Current
100
mA
Supply Current
0.5
mA
I
load
= 0 mA
Operating temperature
-40 to 125
o
C
Maximum junction temperature
o
C
150
3901012101
Page 3
Oct/02
Rev. 002
Figure 2
Figure 3
3901012101
Page 4
Oct/02
Rev. 002
%&
The 12101 is designed for EMC protection in automotive applications
Figure 4
Figure 5
3901012101
Page 5
Oct/02
Rev. 002
' (
) (*
%


Input 5~12V

Output 0~12V
5V/div.
5
S/div.
Pin number
Description
1
5V output
2
Ground
3
5V input
+
, %* -.
/
%* -
0
/
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