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LM337Y Folha de dados(PDF) 3 Page - Texas Instruments

Nome de Peças LM337Y
Descrição Electrónicos  3-TERMINAL ADJUSTABLE REGULATORS
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Recommended Operating Conditions
Electrical Characteristics
LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047J – NOVEMBER 1981 – REVISED MAY 2007
MIN
MAX
UNIT
|VI – VO| ≤ 40 V, P ≤ 15 W
10
1500
IO
Output current
mA
|VI – VO| ≤ 10 V, P ≤ 15 W
6
1500
LM237
–25
150
TJ
Operating virtual junction temperature
°C
LM337
0
125
over recommended ranges of operating virtual junction temperature (unless otherwise noted)
LM237
LM337
PARAMETER
TEST CONDITIONS(1)
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
TJ = 25°C
0.01
0.02
0.01
0.04
Input regulation(2)
VI – VO = –3 V to –40 V
%/V
TJ = MIN to MAX
0.02
0.05
0.02
0.07
VO = –10 V, f = 120 Hz
60
60
Ripple rejection
dB
VO = –10 V, f = 120 Hz, CADJ = 10 µF
66
77
66
77
|VO| ≤ 5 V
25
50
mV
IO = 10 mA to 1.5 A,
TJ = 25°C
|VO| ≥ 5 V
0.3
0.5
0.3
1
%
Output regulation
|VO| ≤ 5 V
50
70
mV
IO = 10 mA to 1.5 A
|VO| ≥ 5 V
1
1.5
%
Output-voltage change
TJ = MIN to MAX
0.6
0.6
%
with temperature
Output-voltage
After 1000 h at TJ = MAX and VI – VO = –40 V
0.3
1
0.3
1
%
long-term drift
Output noise voltage
f = 10 Hz to 10 kHz, TJ = 25°C
0.003
0.003
%
|VI – VO| ≤ 40 V
2.5
5
2.5
10
Minimum output current to
mA
maintain regulation
|VI – VO| ≤ 10 V
1.2
3
1.5
6
|VI – VO| ≤ 15 V
1.5
2.2
1.5
2.2
Peak output current
A
|VI – VO| ≤ 40 V, TJ = 25°C
0.24
0.4
0.15
0.4
ADJUSTMENT current
65
100
65
100
µA
Change in ADJUSTMENT
VI – VO = –2.5 V to –40 V, IO = 10 mA to MAX,
2
5
2
5
µA
current
TJ = 25°C
Reference voltage
VI – VO = –3 V to –40 V,
TJ = 25°C
–1.225
–1.25 –1.275 –1.213
–1.25 –1.287
(OUTPUT to
IO = 10 mA to 1.5 A,
V
TJ = MIN to MAX
–1.2
–1.25
–1.3
–1.2
–1.25
–1.3
ADJUSTMENT)
P
≤ rated dissipation
Thermal regulation
Initial TJ = 25°C, 10-ms pulse
0.002
0.02
0.003
0.04
%/W
(1)
Unless otherwise noted, the following test conditions apply: |VI – VO| = 5 V and IO = 0.5 A. For conditions shown as MIN or MAX, use
the appropriate value specified under recommended operating conditions. All characteristics are measured with a 0.1-
µF capacitor
across the input and a 1-
µF capacitor across the output. Pulse-testing techniques are used to maintain the junction temperature as close
to the ambient temperature as possible. Thermal effects must be taken into account separately.
(2)
Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
3
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