FAIRCHILD MC78LXXA (LM78LXX, KA78LXXA) Data Sheet
Summary
Discover reliable and stable power conditioning with the MC78LXX series of fixed positive voltage regulators. Engineered to provide regulated outputs from 5V through 24V, these ICs are ideal for electronics projects requiring up to 100mA of constant current. The technical manual provides comprehensive coverage of electrical characteristics, including load regulation, thermal overload protection, and application guidelines, enabling engineers and design professionals to select the perfect voltage variant for demanding DC power applications.
Page 1 Text Content
查询MC78L05A供应商 MC78LXXA (LM78LXX, KA78LXXA) FIXED VOLTAGE REGULATOR (POSITIVE)
3-TERMINAL 0.1A POSITIVE VOLTAGE
TO-92
REGULATORS The MC78LXX series of fixed voltage monolithic integrated circuit voltage regulators are suitable for application that required supply up to 100m A.
1: Output 2: GND 3: Input
8 SOP
FEATURES • Maximum Output Current of 100m A • Output Voltage of 5V, 6V, 8V, 9V, 10V, 12V, 15V, 18V and 24V • Thermal Overload Protection • Short Circuit Current Limiting • Output Voltage Offered in ± 5% Tolerance 1: Output 2: GND 3: GND 4: NC
5: NC 6: GND 7: GND 8: Input
ORDERING INFORMATION
Device Package Operating Temperature
MC78LXXACP (LM78LXXACZ) (KA78LXXAZ) TO-92 - 45 ~ + 125°C °
MC78LXXACD (KA78LXXAD) 8 SOP 0 ~ + 125°C
BLOCK DIAGRAM
THERMAL SHUTDOWN
CIRCUIT
REFERENCE VOLTAGE
SHORT CIRCUIT
PROTECTION RSC
Rev. C
1999 Fairchild Semiconductor Corporation
Page Summary Contents For FAIRCHILD MC78LXXA (LM78LXX, KA78LXXA) Data Sheet
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 7 |
| File Size | 119.72 KB |
| Published | May 30, 2026 |
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Frequently Asked Questions
What is the function of 'XX' in the MC78LXX series?
To specify the desired output voltage value.
Are external components needed for optimal performance?
Bypass Capacitors are recommended for optimum stability and transient response and should be located as close as possible to the regulator.
What is the maximum operating junction temperature range?
The typical operating junction temperature range specified in multiple tables is up to 125°C or higher (e.g., 175°C for specific models).
How do I determine the current handling capability?
Maximum output current and input voltage are highly dependent on heat sinking and/or lead length, as noted in the datasheet.