LM78L 100mA Fixed Output Linear Regulator

1 Features

• Input voltage: up to 30V operating

– New chip: 45V absolute maximum

– Legacy chip: 35V absolute maximum

• Available output voltages:

– New chip: 3.3V, 5V, 6V, 12V, 15V

– Legacy chip: 5V, 6.2V, 8.2V, 9V, 12V, 15V

• Output current: 100mA

• Internal thermal overload protection

• Output current limiting

• No external components required for stability

• Wide absolute maximum junction temperature:

– New chip: -40°C to 150°C

– Legacy chip: see the Absolute Maximum

Ratings

• Package options:

– SOIC

– SOT-89 (new chip only)

– TO-92 (legacy chip only)

– DSBGA (legacy chip only)

• Refer to the Device Nomenclature table for

information about legacy and new chip orderables

2 Applications

• Servo & stepper drives

• Battery chargers

• Portable instrumentation

• LED lighting

• Appliances

3 Description

The

LM78L

series

(LM78Lxx

throughout

this

document) of positive linear regulators is available

with several fixed output voltages, making the devices

useful in a wide range of applications. Used as a

Zener-diode and resistor combination replacement,

the LM78Lxx typically provides an effective output

impedance improvement of two orders of magnitude

and lower quiescent current. These regulators

can provide local, on-card regulation, eliminating

distribution problems associated with single-point

regulation. The available voltages allow the LM78Lxx

to be used in logic systems, instrumentation, industrial

power delivery and more.

The LM78Lxx with new chip is available in SOIC (D)

package and SOT-89 (PK) package. The LM78Lxx

series regulators can deliver up to 100mA output

current. Current limiting is included to limit the peak

output current to a safe value. If internal power

dissipation is too high, the thermal shutdown circuit

prevents the IC from overheating.

Table 3-1. Package Information

PART NUMBER

PACKAGE (1)

PACKAGE SIZE(2)

LM78L

D (SOIC, 8)

4.90mm × 6.00mm

PK (SOT-89, 3)

4.50mm × 4.095mm

LP (TO-92, 3)

5.20mm × 3.68mm

YPB (DSBGA, 8)

1.30mm × 1.30mm

(1)

For more information, see the Mechanical, Packaging, and

Orderable Information.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

*Not required for stability

LM78Lxx

INPUT

OUTPUT

GND

CIN*

0.33µF

COUT*

0.1µF

VOUT

VIN

Fixed Output Regulator Circuit

LM78L

SNVS754N – JANUARY 2000 – REVISED APRIL 2026

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.