© Semiconductor Components Industries, LLC, 2000

March, 2000 – Rev. 4

1

Publication Order Number:

MC33275/D

MC33275

Low Dropout 300 mA

Voltage Regulator

The MC33275 series are micropower low dropout voltage

regulators available in a wide variety of output voltages as well as

packages, DPAK, SOT–223, and SOP–8 surface mount packages.

These devices feature a very low quiescent current and are capable of

supplying output currents up to 300 mA. Internal current and thermal

limiting protection are provided by the presence of a short circuit at the

output and an internal thermal shutdown circuit.

The MC33275 is available as a MC33375 which includes an On/Off

control.

Due to the low input–to–output voltage differential and bias current

specifications, these devices are ideally suited for battery powered

computer, consumer, and industrial equipment where an extension of

useful battery life is desirable.

Features:

Voltage

Simplified Block Diagram

Thermal &

Anti–sat

Protection

54 K

Rint

This device contains 41 active transistors

1.23 V

V. Ref.

Gnd

LOW DROPOUT

MICROPOWER VOLTAGE

REGULATOR

ORDERING INFORMATION

PLASTIC

D SUFFIX

CASE 751

http://onsemi.com

PLASTIC

ST SUFFIX

CASE 318E

1

3

4

8

1

1

3

4

PLASTIC

DT SUFFIX

CASE 369A

Gnd

4

12

3

MC33375

Gnd

Input

Gnd

Gnd

Gnd

Output

Gnd

Gnd

N/C

1

2

3

4

8

7

6

5

MC33375

Pins 4 and 5 Not Connected

Gnd

4

12

3

MC33275

Gnd

See detailed ordering and shipping information in the

package dimensions section on page 9 of this data sheet.