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L7815CV-DG

15V Fixed Positive Voltage Regulator, 1.5A output, TO-220

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Manufacturer Part：

L7815CV-DG

Package：

TO-220 (10.4 x 4.6 x 15.5 mm)

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Description

Product Overview

The L7815CV-DG is a positive voltage regulator from STMicroelectronics providing a fixed 15V output at up to 1.5A. Part of the L78 series, it features internal current limiting, thermal shutdown, and safe area protection, making it robust against overload and fault conditions. The device is available in a TO-220 package and is widely used in power supply and voltage regulation circuits.

Key Specifications

Output Voltage 15V (fixed)
Output Current 1.5A
Input Voltage Range 17.5V to 35V
Dropout Voltage 2V typical
Line Regulation 12mV typical
Load Regulation 25mV typical
Ripple Rejection 60dB typical
Operating Temperature 0C to +125C
Package TO-220

Features

  • Fixed 15V positive output voltage
  • 1.5A output current capability
  • Internal thermal overload protection
  • Short-circuit current limiting
  • Output transistor safe area protection
  • No external components required for basic operation
  • High ripple rejection ratio

Applications

  • Power supply voltage regulation
  • Industrial control systems
  • Audio amplifier power supplies
  • Motor driver supply regulation
  • General purpose 15V power source

The L7815CV-DG from STMicroelectronics is a positive fixed-voltage regulator in the TO-220 package providing a regulated 15V output at currents up to 1.5A. Part of the industry-standard L78 series, it incorporates internal current limiting, thermal shutdown, and safe area protection for robust operation under fault conditions. The device requires minimal external components for operation and offers excellent ripple rejection, making it a reliable choice for linear power supply designs.

The L7815CV-DG operates as a series-pass linear regulator. The input voltage is applied through a series pass transistor controlled by a feedback loop. An internal voltage reference and error amplifier compare a fraction of the output voltage with the reference, adjusting the pass transistor to maintain a constant 15V output. The internal current limiting circuit restricts output current during overload conditions. The thermal shutdown circuit disables the output when the junction temperature exceeds approximately 150C, preventing device damage. Safe area protection limits the pass transistor power dissipation.

Pin Name Type Function
1 INPUT Power Unregulated input voltage (17.5-35V)
2 GND Power Common ground
3 OUTPUT Output Regulated 15V output
  • Linear power supply for 15V rail generation
  • Industrial control and automation 15V supply
  • Audio amplifier regulated power supplies
  • Motor driver and solenoid supply regulation
  • General purpose bench and embedded 15V power source
Manufacturer Part Number Package Notes
onsemi MC7815ACTG TO-220 Direct equivalent, tight tolerance
Texas Instruments LM7815CT TO-220 Direct equivalent
Infineon ISA7815A TO-220 Automotive qualified version
STMicroelectronics L7815CD2T-TR D2PAK SMD version
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We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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