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Product Detailed Parameters
- Description：IC REG LINEAR -12V 1.5A TO220FP
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-35V
- Voltage - Output (Min/Fixed)：-12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.1V @ 1A (Typ)
- Current - Output：1.5A
- Current - Quiescent (Iq)：3 mA
- Current - Supply (Max)：-
- PSRR：60dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack
- Supplier Device Package：TO-220FP
- Grade：-
- Qualification：-
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Overview
The L7912CP is a three-terminal negative voltage regulator from the L79xxC series, manufactured by STMicroelectronics. It provides a fixed output voltage of -12 V with an output current capability up to 1.5 A. The device features thermal overload protection, short-circuit protection, and output transition SOA protection. It operates within a junction temperature range of 0 to 150 °C and accepts DC input voltages up to -35 V for this output level. The component is housed in a TO-220 package.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Compatible with split power supply designs due to matching voltage options with the L78xx positive standard series.
- Includes internal thermal overload protection and short-circuit protection for enhanced reliability.
Applications
- Split power supplies requiring negative voltage rails
- Local on-card voltage regulation
- Negative voltage linear power supplies
Procurement Notes
Verify that the specific order code matches the required package type, as the L7912CP designation corresponds to the TO-220 form factor. Confirm environmental compliance status such as ECOPACK grades if restricted substances are a constraint. Ensure adequate heat sinking is planned, as delivering currents near the maximum rating requires appropriate thermal management to maintain safe operating temperatures.
Selection Notes
Select this component when a fixed negative voltage rail is required alongside a positive rail, leveraging its compatibility with the L78xx series. Consider the TO-220 package for through-hole mounting and robust thermal dissipation capabilities. Evaluate the dropout voltage requirements against the available input voltage headroom to ensure stable regulation under all expected load conditions.
Part Context
The L7912CP belongs to the L79xxC family of three-terminal negative regulators. This series offers various fixed output voltages including -5 V, -8 V, -12 V, and -15 V. The 'C' suffix indicates the standard tolerance version, while the 'P' suffix designates the TO-220 package style. These devices are designed for general-purpose linear regulation applications.
Replacement Considerations
L7912CV (TO-220 Dual Gauge frame)
FAQ
What is the maximum DC input voltage allowed for the L7912CP?
The absolute maximum DC input voltage is -35 V for the -12 V output variant.
Does the L7912CP include protection against short circuits?
Yes, the device incorporates internal short-circuit protection to safeguard against output faults.
