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AX78LXX Datasheet

  • AX78LXX

  • 3-Terminal Positive Voltage Regulators

  • 10頁

  • ETC

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AX78LXXAM/BM
AX78LXXAA/BA
3-Terminal Positive Voltage Regulators
AX78LXX Series Pin Assignment
3-Lead Plastic
SOT-89
Package Code: M
Pin 1: V
OUT
Pin 2: GND
Pin 3: V
IN
3-Lead Plastic
TO-92
Package Code: A
Pin 1: V
OUT
Pin 2: GND
Pin 3: V
IN
12
3
1
2
3
Description
These regulators employ internal current-limiting and thermal-shutdown, making
them essentially indestructible. They can deliver up to 100mA output current.
Features
鈥?/div>
Maximum Output Current of 100mA (T
C
=25擄C)
鈥?/div>
Internal Short-Circuit Current Limiting
鈥?/div>
Internal Thermal Overload Protection
鈥?/div>
TO-92 & SOT-89 Package
Typical Application
V
IN
C
IN
Absolute Maximum Ratings
(T
A
=25擄C, Unles Otherwise Specified)
Characteristic
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Thermal Resistance
Symbol
V
IN
P
D
T
opr
T
stg
T
j
R
th(j-a)
TO-92
SOT-89
-30 to 85
-55 to 150
150
208
o
1
AX78LXX
Series
2
3
V
OUT
C
OUT
(Note 2)
0.33uF
Rating
40
700
500
Unit
V
mW
mW
o
o
o
(Note 1)
0.1uF
Note 1: C
IN
is required if regulator is located an
appreciable distance from power supply filter.
Note 2: C
OUT
is not needed for stability;
however, it does improve transient response.
Values of less than 0.1uF could cause
instability.
C
C
C
C/W
Schematic Diagram & Equivalent Circuit
Schematic Diagram
Equivalent Circuit
V
IN
Input
3
Series
Pass
Element
Current
Generator
SOA
Protection
Output
1
Starting
Circuit
Reference
Voltage
Error
Amplifier
Thermal
Protection
GND
2
V
OUT
AVANTICS - AX78LXX Series
Specification No.: 050309-FE0004

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