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Product Detailed Parameters
- Description：IC REG LINEAR 8V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Box (TB)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：5.5 mA
- Current - Supply (Max)：6 mA
- PSRR：45dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L78L08ACZ-AP is a three-terminal positive voltage regulator from the L78L series by STMicroelectronics. It provides a fixed output voltage of 8 V with an output current capability up to 100 mA. The device features internal current limiting and thermal shutdown protection, ensuring robust operation under overload conditions. It operates within a junction temperature range of 0 °C to 125 °C for the AC variant. The maximum DC input voltage is rated at 30 V. The component is housed in a TO-92 package with three pins: Pin 1 is Output (VOUT), Pin 2 is Ground (GND), and Pin 3 is Input (VIN).
Feature Summary
- Internal current limiting and thermal shutdown protection mechanisms ensure device reliability.
- Designed as a fixed voltage regulator suitable for local or on-card regulation applications.
- Capable of replacing Zener diode and resistor combinations with improved performance characteristics.
Applications
- Local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
- Replacement for Zener diode/resistor combinations in circuits requiring lower quiescent current and noise.
- Used with power pass elements to construct high-current voltage regulators.
Procurement Notes
Verify the specific suffix 'AP' against official manufacturer documentation to confirm packaging details such as cut tape or bulk availability. Ensure the 'AC' designation matches the required ±8% output voltage tolerance and operating temperature range. Confirm that the TO-92 package aligns with the printed circuit board footprint requirements before finalizing procurement orders.
Selection Notes
Select this component when a fixed 8 V output is required with a maximum load current of 100 mA. The AC suffix indicates an 8% voltage tolerance, which differs from the tighter 4% tolerance offered by the AB suffix. Consider the thermal resistance characteristics of the TO-92 package and the need for adequate heat sinking if operating near the maximum current limit to maintain safe junction temperatures.
Part Context
This part belongs to the L78L series of three-terminal positive linear voltage regulators manufactured by STMicroelectronics. The series includes various fixed output voltages ranging from 3.3 V to 24 V. These regulators are designed for general-purpose applications where simple, reliable voltage regulation is needed without external components. The L78L series is distinct from the higher-current L78 series.
Replacement Considerations
Direct pin-compatible replacements include other manufacturers' L78L08 variants in TO-92 packages, such as those from Texas Instruments or NXP, provided they meet the same electrical specifications and thermal requirements. Verify that any substitute component supports the 100 mA output current and 30 V maximum input voltage limits.
