Datasheet > LM237

LM237

更新时间： 2024-11-19 22:47:07

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
14页	247K
描述
NEGATIVE VOLTAGE REGULATORS THREE-TERMINAL ADJUSTABLE

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LM237 数据手册

LM137/LM237

LM337

THREE-TERMINAL ADJUSTABLE

NEGATIVE VOLTAGE REGULATORS

OUTPUT VOLTAGE ADJUSTABLE DOWN TO

V_ref

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

TO-3

TO-220

TO-39

EXCELLENT

0.002%/V

THERMAL

REGULATION:

50ppm/°C TEMPERATURE COEFFICIENT

DESCRIPTION

The LM137 series are adjustable 3-terminal nega-

tive voltage regulators capable of supplying in ex-

cess- 1.5Aovera -1.2 to -37Voutput voltagerange.

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-

mainsfullyfunctional even ifthe adjustment terminal

is disconnected.

PIN CONNECTIONS

TO-3

(bottom view)

TO-39

(bottom view)

TO-220

(front view)

1 - Adj

2 - Output

3 - Input

1 - Output

2 - Adj

Case is input

1 - Adj

2 - Output

3 - input

Heatsink surface connected to input

March 1993

1/14

12 3 4 5 6 7...14

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