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MC33264DM-2.8R2

Micropower smallCAP™ Voltage Regulators with On/Off Control

ON Semiconductor 

MC33264

Micropower smallCAP™

Voltage Regulators with

On/Off Control

The MC33264 series are micropower low dropout voltage

regulators available in SO−8 and Micro−8 surface mount packages and

a wide range of output voltages. These devices feature a very low

quiescent current (100 μA in the ON mode; 0.1 μA in the OFF mode),

and are capable of supplying output currents up to 100 mA. Internal

current and thermal limiting protection is provided. They require only

a small output capacitance for stability.

Additionally, the MC33264 has either active HIGH or active LOW

control (Pins 2 and 3) that allows a logic level signal to turn−off or

turn−on the regulator output.

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.

MC33264 Features:

• Low Quiescent Current (0.3 μA in OFF Mode; 95 μA in ON Mode)

• Low Input−to−Output Voltage Differential of 47 mV at 10 mA, and

131 mV at 50 mA

• Multiple Output Voltages Available

• Extremely Tight Line and Load Regulation

• Stable with Output Capacitance of Only

0.22 μF for 4.0 V, 4.75 V and 5.0 V Output Voltages

0.33 μF for 2.8 V, 3.0 V, 3.3 V and 3.8 V Output Voltages

• Internal Current and Thermal Limiting

• Logic Level ON/OFF Control

• Functionally Equivalent to TK115XXMC and LP2980

Representative Block Diagram

1

8

Vin

Vout

Thermal and

Anti−Sat

7

Protection

2

Base

On/Off

Rint

5

1.23 V

Vref

Adj

52.5 k

3

MC33264

6

On/Off

Gnd

This device contains 37 active transistors.

http://onsemi.com

LOW DROPOUT

MICROPOWER VOLTAGE

REGULATORS WITH

ON/OFF CONTROL

SEMICONDUCTOR

TECHNICAL DATA

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO−8)

8

1

DM SUFFIX

PLASTIC PACKAGE

CASE 846A

(Micro−8)

PIN CONNECTIONS

Input 1

On/Off 2

On/Off 3

N/C 4

8 Output

7 Base

6 Gnd

5 Adjust

(Top View)

ORDERING INFORMATION

Device

Operating

Temperature Range Package

MC33264D−2.8

MC33264D−3.0

MC33264D−3.3

MC33264D−3.8

MC33264D−4.0

MC33264D−4.75

MC33264D−5.0

TA = − 40° to +85°C

MC33264DM−2.8

MC33264DM−3.0

MC33264DM−3.3

MC33264DM−3.8

MC33264DM−4.0

MC33264DM−4.75

MC33264DM−5.0

SO−8

Micro−8

© Semiconductor Components Industries, LLC, 2006

1

September, 2006 − Rev. 5

Publication Order Number:

MC33264/D

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