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3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX

Data Sheet

Nov. 2012 Rev. 2. 2 BCD Semiconductor Manufacturing Limited

General Description

The AZ78LXX series are three terminal positive regu-

lators with several fixed output voltages. These regula-

tors can provide local on card regulation, eliminating

the distribution problems associated with single point

regulation. The AZ78LXX can be used in logic sys-

tems, instrumentation, HiFi, and other solid state elec-

tronic equipment. When used as a Zener diode/resistor

combination replacement, the AZ78LXX usually

results an effective output impedance improvement of

two orders of magnitude, and lower quiescent current.

With adequate heat sinking the AZ78LXX can deliver

100mA output current. Current limiting is included to

limit the peak output current to a safe value. Thermal

protection is also provided. If internal power

dissipation becomes too high for the heat sinking

provided, the thermal shutdown circuit takes over

preventing the IC from overheating.

The AZ78LXX are available in the plastic TO-92

(bulk or ammo packing), SOT-223 and SOT-89 pack-

ages.

Features

· Output Current up to 100mA

· Fixed Output Voltages of 5V, 8V, 9V and 12V

· Output Voltage Tolerances of ±5% over the Full

Temperature Range

· Internal Short Circuit Current-limiting

· Internal Thermal Overload Protection

· No External Components

Applications

· High Efficiency Linear Regulator

· Post Regulation for Switching Supply

· Microprocessor Power Supply

· Mother Board I/O Power Supply

Figure 1. Package Types of the AZ78LXX

SOT-223

SOT-89

TO-92(Bulk Packing)

TO-92(Ammo Packing)

1 2 3 4 5 6 ... 16 17

Résumé du contenu

Page 1

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet1Nov. 2012 Rev. 2. 2 BCD Semiconducto

Page 2 - Pin Configuration

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet10Nov. 2012 Rev. 2. 2 BCD Semiconduct

Page 3 - Functional Block Diagram

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet11Nov. 2012 Rev. 2. 2 BCD Semiconduct

Page 4 - Ordering Information

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet12Nov. 2012 Rev. 2. 2 BCD Semiconduct

Page 5

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet13Nov. 2012 Rev. 2. 2 BCD Semiconduct

Page 6 - Electrical Characteristics

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Page 7

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Page 8

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Page 9

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Page 10 - Data Sheet

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Page 11

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Page 12 - Typical Application

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet4Nov. 2012 Rev. 2. 2 BCD Semiconducto

Page 13 - Mechanical Dimensions

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Page 14

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Page 15 - SOT-223 Unit: mm(inch)

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet7Nov. 2012 Rev. 2. 2 BCD Semiconducto

Page 16 - SOT-89 Unit: mm(inch)

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet8Nov. 2012 Rev. 2. 2 BCD Semiconducto

Page 17

3-TERMINAL POSITIVE LINEAR REGULATOR AZ78LXX Data Sheet9Nov. 2012 Rev. 2. 2 BCD Semiconducto

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