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PDF LM137H Data sheet ( Hoja de datos )

Número de pieza LM137H
Descripción NEGATIVE VOLTAGE REGULATORS THREE-TERMINAL ADJUSTABLE
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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No Preview Available ! LM137H Hoja de datos, Descripción, Manual

LM137/LM237
LM337
THREE-TERMINAL ADJUSTABLE
NEGATIVE VOLTAGE REGULATORS
. OUTPUT VOLTAGE ADJUSTABLE DOWN TO
Vref
. 1.5A GUARANTEED OUTPUT CURRENT
. 0.3%/V TYPICAL LOAD REGULATION
. 0.01%/V TYPICAL LINE REGULATION
. CURRENT LIMIT CONSTANT WITH TEM-
PERATURE
. RIPPLE REJECTION : 77dB
. STANDARD 3-LEAD TRANSISTOR PACK-
AGES
. EXCELLENT THERMAL REGULATION:
0.002%/V
. 50ppm/°C TEMPERATURE COEFFICIENT
TO-3
DESCRIPTION
The LM137 series are adjustable 3-terminal nega-
tive voltage regulators capable of supplying in ex-
cess - 1.5A over a -1.2 to - 37V output voltage range.
They are exceptionally easy to use and require only
two external resistors to set the output voltage. Fur-
ther, both line and load regulation are better than
standard fixed regulators. Also, LM137 regulators
are supplied in standard transistor packages which
are easily mounted and handled. In addition to
higher performance than fixed regulators, the
LM137 series offer full overload protection available
only in integrated circuits. Included on the chip are
current limit, thermal overload protection and safe
area protection. All overload protection circuitry re-
mains fully functional even if the adjustment terminal
is disconnected.
PIN CONNECTIONS
TO-3
(bottom view)
TO-39
(bottom view)
TO-220
TO-39
TO-220
(front view)
March 1993
1 - Output
2 - Adj
Case is input
1 - Adj
2 - Output
3 - input
1 - Adj
2 - Output
3 - Input
Heatsink surface connected to input
1/14

1 page




LM137H pdf
LM137-LM237-LM337
5/14

5 Page





LM137H arduino
DIM.
A
B
C
D
E
G
N
P
R
U
V
MIN.
11.00
0.97
1.50
8.32
19.00
10.70
16.50
25.00
4.00
38.50
30.00
LM137-LM237-LM337
TO-3 MECHANICAL DATA
mm
TYP.
MAX.
13.10
1.15
1.65
8.92
20.00
11.10
17.20
26.00
4.09
39.30
30.30
MIN.
0.433
0.038
0.059
0.327
0.748
0.421
0.649
0.984
0.157
1.515
1.187
inch
TYP.
MAX.
0.516
0.045
0.065
0.351
0.787
0.437
0.677
1.023
0.161
1.547
1.193
AD
P
GC
R
P003F
11/14

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