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參數資料
| 型號： | LM137 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Three Terminal Adjustable Negative Voltage Regulator(三端可調負電壓穩(wěn)壓器) |
| 中文描述： | 三端可調負電壓穩(wěn)壓器（三端可調負電壓穩(wěn)壓器） |
| 文件頁數： | 1/14頁 |
| 文件大小： | 245K |
| 代理商： | LM137 |
LM137/LM237
LM337
March 1993
NEGATIVE VOLTAGE REGULATORS
THREE-TERMINAL ADJUSTABLE
.
OUTPUT VOLTAGE ADJUSTABLE DOWN TO
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
0.002%/V
.
50ppm/
°
C TEMPERATURE COEFFICIENT
V
ref
.
1.5A GUARANTEED OUTPUT CURRENT
THERMAL
REGULATION:
DESCRIPTION
The LM137 series are adjustable 3-terminal nega-
tive voltage regulators capable of supplying in ex-
cess- 1.5Aovera -1.2to-37Voutput voltagerange.
Theyare exceptionally easy to useand 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
LM137series offer fulloverload 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-
mainsfullyfunctionaleveniftheadjustment terminal
is disconnected.
TO-3
PIN CONNECTIONS
1 - Output
2 - Adj
Case is input
1 - Adj
2 - Output
3 - Input
Heatsink surface connected to input
TO-220
TO-3
(bottomview)
TO-39
(bottom view)
TO-220
(frontview)
1 - Adj
2 - Output
3 - input
TO-39
1/14
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