3-TERMINAL POSITIVE LINEAR REGULATORS
Description
Preliminary Datasheet 500mA 3-TERMINAL POSITIVE VOLTAGE REGULATOR General Description
The AZ78MXX series are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications including local, on-card regulation.
This series of regulators are complete with internal current limiting, thermal shutdown protection, and safe-area compensation which make them virtually immune from output overload.
If adequate heat sinking are provided, these regulators can deliver output currents up to 0.
5A.
The AZ78MXX series are available in two standard plastic packages: TO-220 and TO-252.
AZ78MXX
Features
· · · · · Output Current up to 0.
5A Fixed Output Voltages of 5V, 6V, 8V, 9V and 12V Output Voltage Tolerances of ± 5% over the Full Temperature Range Internal Short Circuit Current-Limiting Internal Thermal Overload Protection
Applications
· · · Consumer Electronics Microprocessor Power Supply Mother Board I/O Power Supply
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TO-220
TO-252
Figure 1.
Package Types of AZ78MXX
May 2005 Rev.
1.
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BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 500mA 3-TERMINAL POSITIVE VOLTAGE REGULATOR Pin Configuration AZ78MXX
T Package (TO-220)
D Package (TO-252)
3 2 1 OUTPUT GND INPUT
3 2 1
OUTPUT GND INPUT
Figure 2.
Pin Configuration of AZ78MXX (Top View)
Pin Description
Pin Number Pin Name Function
1 2 3
INPUT GND OUTPUT
Voltage Input Ground Voltage Output
May 2005 Rev.
1.
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BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 500mA 3-TERMINAL POSITIVE VOLTAGE REGULATOR Functional Block Diagram
INPUT R9 Q9 Q14 R16 Q21 Q24 C1 R1 Q18 R12 Q3 Q6 Q10 R3 Q11 Q7 Q1 Q4 R4 Q8 R11 R5 R6 Q23 Q13 Q2 Q5 Q15 C2 Q19 Q12 R2 R8 R10 Q17 Q20 R19 R15 R7 Q16 R14 Q22 R18 R2 2 R17 R23 OUTPUT R20 R21
AZ78MXX
R13
GND
Figure 3.
Functional Block Diagram of AZ78MXX
May 2005 Rev.
1.
0
BCD Semiconductor Manufacturing Limited
3
Preliminary Datasheet 500mA 3-TERMINAL POSITIVE VOLTAGE REGULATOR Ordering Information
AZ78M...
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