1FEATURES

2• Complete Specifications at 1A Load

• Output Voltage Tolerances of ±4% at T j = 25°C

• Internal Thermal Overload Protection

• Internal Short-circuit Current Limit

• Output Transistor Safe Area Protection

• P+ Product Enhancement Tested

DESCRIPTION

The LM140K monolithic 3-terminal positive voltage

regulator employs internal current-limiting, thermal

shutdown and safe-area compensation, making them

essentially indestructible. If adequate heat sinking is

provided, they can deliver over 1.0A output current.

They are intended as fixed voltage regulators in a wide range of applications including local (on-card)

regulation for elimination of noise and distribution

problems associated with single-point regulation. In

addition to use as fixed voltage regulators, these

devices can be used with external components to

obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire

series of regulators easy to use and minimize the

number of external components. It is not necessary to

bypass the output, although this does improve

transient response. Input bypassing is needed only if

the regulator is located far from the filter capacitor of

the power supply.

The LM140K is available in 5V, 12V and 15V options

in the steel TO-3 power package.