L146.pdf 데이터시트 (총 11 페이지) - 파일 다운로드 L146 데이타시트 다운로드

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LINEAR INTEGRATED CIRCUIT
HIGH PRECISION HIGH VOLTAGE REGULATOR
• INPUT VOLTAGE UP TO 80V
• OUTPUT VOLTAGE ADJUSTABLE FROM 2 TO 77V
• POSITIVE OR NEGATIVE SUPPLY OPERATION
• SERIES. SHUNT, SWITCHING OR FLOATING OPERATION
• OUTPUT CURRENT UP TO 150 mA WITHOUT EXTERNAL PASS TRANSISTOR
• ADJUSTABLE CURRENT LIMITING
• THERMAL PROTECTION
The L 146 is a monolithic integrated programmable voltage regulator in 14-lead dual in-line plastic
package and 10-lead Metal Can (TO-l00 type). It is made with high voltage technology and provides
internal current limiting and thermal shut down protection; when current exceeds 150 mA an external
NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote
shut down. The L 146 is intended to widen the application range of L 123 up to 80V.
ABSOLUTE MAXIMUM RATINGS
VI
Vi-Vo
10
Iref
Ptot
T stg
Input voltage
Voltage drop
Output current
Current from V ref
=Power dissipation (at Tamb 70°C) Plastic DIP
TO-l00
Operating junction temperature L 146
L146C
Storage temperature
80 V
78 V
150 mA
8 mA
1W
520 mW
-25 to + 85°C
o to +70 °C
-65 to +150°C
MECHANICAL DATA
Dimensions in mm
57 6/82

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CONNECTION DIAGRAMS
(top view)
CURRENT
LlM1T
INVERTING
INPUT
NON-
INVERTING 3
INPUT
Type
L146
L146 C
TO-100
L 146 T
L 146 CT
NC
CURRENT
LIMIT
CURRENT
SENSE
INVERT
INPUT
NON~
INVERT
INPUT
Vre!
-v,
NC
" FREQUENCY
COMP
" .v,
Vc
W V,
V,
NC
Plastic DIP
L 146 CB
BLOCK DIAGRAM
INVERT.
INPUT
FREQUENCY
COMPENS. Vc
SERIES PASS
TRANSISTORS
.....- - - - + < J ' Vo
NON-INVERT. CURRENT CURRENT
INPUT
LIMIT
SENSE
Vz
5-366411
THERMAL DATA
Rth j-amb Thermal resistance junction-ambient
58
TO-100 Plastic DIP
max 155°C/W 80°C/W

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SCHEMATIC DIAGRAM (pin number relative to the plastic package)
~--~-------.--------~ -------~------------~-------------~------~120·V5
Rl R3
Rll R14
01 Q2 ~~~Q~3--~------~--------+-------~~0~9-----------~ Q12
04
R2
05
iI'N~,
I
Ii
I
I
R6
Cl
R5
* ONLY IN PLASTIC DIP
02
R7
R8
L-----------'"O Vz *
CURRENT
x---c..---1------U LIM IT
LS_-36-65--------~30 ~~~~~NT
NON -INVERT -Vs
INPUT
INVERT.
INPUT
TEST CIRCUIT
12 ",0 Vo
L146
9 V.L
:+l2-CL-~-ci :=R:SCJ
3 CS ____
-0 REGULAT~D
41n~ ____ ~
OUTPUT
~OPF R35_3666/1
Vi = 12V
Vo= 5V 10= 1 mA
R1 //R 2 <; 10 Kn
59