Product overview
Description
The L79 series of three-terminal negative regulators is available in TO-220, TO-220FP and D²PAK packages and several fixed output voltages, making it useful in a wide range of applications.
These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L78 positive standard series, they are particularly suited for split power supplies. If adequate heat sinking is provided, they can deliver over 1.5 A output current.
Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
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All features
- Output current up to 1.5 A
- Output voltages: -5, -8, -12, and -5 V
- Thermal overload protection
- Short-circuit protection
- Output SOA protection
- Output tolerance 2% (AC version) or 4% (C version) at 25 °C
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
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Power Management Design Center
Power Supply Design Tool
• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type: DC/DC AC/DC Solar Battery Charger
Power Management Design Center
LED Lighting Design Tool
• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type: DC/DC AC/DC
Power Management Design Center
Digital Power Workbench
• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
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Thermal-electrical Simulators for Components
AC Switches Simulator
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• Get junction temperature and blocking voltage graphs
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Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
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• Estimate power losses
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Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
Twister Sim
• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
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Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Thermal-electrical Simulators for Components
PCB Thermal Simulator
• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.
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Signal Conditioning Design Tool
Active Filters
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• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool
Comparators
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• Provides I/O signal waveforms
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Signal Conditioning Design Tool
Low side Current Sensing
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Signal Conditioning Design Tool
High side Current Sensing
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• Help to select the right High side current sensing and shunt devices.
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NFC/RFID Calculators
NFC Inductance
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• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
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• The tool returns link budget estimate
NFC/RFID Calculators
NFC Tuning Circuit
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• Select the topology of the matching network
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L79
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
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Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| L7905ACD2T-TR | Active | D2PAK | Industrial | Ecopack2 | - | - | |
| L7905ACV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7905CD2T-TR | Active | D2PAK | Industrial | Ecopack2 | - | - | |
| L7905CP | Active | TO-220FP | Industrial | Ecopack2 | - | - | |
| L7905CV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7905CV-DG | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7912ACV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7912CD2T-TR | Active | D2PAK | Industrial | Ecopack2 | - | - | |
| L7912CP | Active | TO-220FP | Industrial | Ecopack2 | - | - | |
| L7912CV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7912CV-DG | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7915ACV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7915CP | Active | TO-220FP | Industrial | Ecopack2 | - | - | |
| L7915CV | Active | TO-220 | Industrial | Ecopack2 | - | - | |
| L7915CV-DG | Active | TO-220 | Industrial | Ecopack2 | - | - |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
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| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| L7905CV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7915CP | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7915CV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7905ACD2T-TR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7912CV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7905CP | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7912CD2T-TR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7915ACV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7915CV-DG | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7905CD2T-TR | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7912CP | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7905CV-DG | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7912ACV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7905ACV | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| L7912CV-DG | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
L7905CV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7915CP Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7915CV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7905ACD2T-TR Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7912CV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7905CP Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7912CD2T-TR Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7915ACV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7915CV-DG Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7905CD2T-TR Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7912CP Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7905CV-DG Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7912ACV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7905ACV Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
L7912CV-DG Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors