Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

STMicroelectronics L7915ACV-DG

Name: L7915ACV-DG
Brand: STMicroelectronics
SKU: L7915ACV-DG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L7915ACV-DG

Manufacturer:: STMicroelectronics

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-220-3

Datasheet:: L7915ACV-DG.pdf

Description:: IC REG LINEAR -15V 1.5A TO220

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:200

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

L7915ACV-DG from STMicroelectronics is a fixed-output, three-terminal negative linear voltage regulator delivering -15 V at up to 1.5 A output current with ±2 % initial accuracy, thermal overload protection, short-circuit current limiting, and safe operating area (SOA) protection for output transients. It serves as a local on-card negative supply in split-rail systems, industrial power management, and analog circuitry requiring stable low-noise bias.

For engineers reviewing the L7915ACV-DG datasheet, L7915ACV-DG pinout, L7915ACV-DG application, or L7915ACV-DG equivalent, key selection criteria include dropout voltage (1.1 V @ 1 A), output voltage drift (-0.9 mV/°C), supply voltage rejection (54–60 dB @ 120 Hz), and thermal resistance (3 °C/W junction-to-case in TO-220).

Technical Context

This device implements a monolithic PNP pass transistor architecture with internal current limiting, thermal shutdown, and SOA protection-enabling robust operation under sustained overload or transient stress. Its fixed -15 V output is trimmed during production to ±2 % tolerance at 25 °C and maintains stability across 0–125 °C junction temperature.

The regulator requires minimal external components: input capacitor (≥2.2 µF solid tantalum) for stability and output capacitor (≥1 µF) for ripple suppression. It supports adjustable configurations via external resistors but is optimized for fixed-voltage use in dual-supply analog systems paired with L7815AC positive regulators.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	-15 V ±2 % at 25 °C; maintains -14.4 to -15.6 V over full load (5 mA–1 A) and input range (-18.5 V to -30 V)
Max Output Current	1.5 A continuous (with adequate heatsinking); internally limited short-circuit current of 1.3 A typical
Dropout Voltage	1.1 V @ 1 A, 25 °C - defines minimum input-to-output differential needed to sustain regulation
Line Regulation	150 mV max over -20 V to -26 V input range - critical for stability when upstream supply varies
Load Regulation	150 mV max from 5 mA to 1.5 A - ensures consistent biasing across dynamic load steps
Noise Voltage	250 µV RMS (10 Hz–100 kHz) - low enough for precision op-amp and ADC reference rails
Supply Rejection	54–60 dB @ 120 Hz - suppresses ripple from rectified AC inputs in linear power supplies

Pinout & Package

Supplied in TO-220 package (3-pin, vertical mounting, metal tab connected to GND), offering low thermal resistance (3 °C/W junction-to-case) and compatibility with standard heat sinks.

Pin/Terminal	Circuit Role	Design Meaning
Input (IN)	Negative input supply connection	Accepts unregulated negative DC input; must be ≥ -18.5 V for full-load operation at -15 V output
Ground (GND)	Reference node and heat sink interface	Common return path; electrically tied to metal tab - requires isolation if mounting to chassis
Output (OUT)	Regulated negative output	Delivers stable -15 V; decoupling capacitor must be placed within 10 mm for stability

Key Features

Feature	Design Value
Thermal Overload Protection	Shuts down output above 125 °C junction temperature and auto-recovers after cooldown - prevents permanent damage during sustained overload
Short-Circuit Current Limiting	Clamps output at ~1.3 A typical; limits power dissipation during fault conditions without external fusing
SOA Protection	Prevents secondary breakdown during output transients by dynamically limiting I_V product - essential for reliability in capacitive-load applications
Low Quiescent Current	3 mA typical at 25 °C - minimizes no-load power loss in battery-backed or standby systems

Applications

Industrial Analog Signal Conditioning

Split-Rail Op-Amp Power Supply

Use Scenario: Precision sensor front-end with instrumentation amplifiers and 16-bit ADCs requiring symmetric ±15 V rails.

IC Role / Device Role / Timing Role: Provides clean, regulated -15 V bias for op-amp negative supply rail and reference buffers.

Use Value: 250 µV noise and 60 dB SVR ensure <0.01 % error contribution to analog signal chain accuracy.

Use Scenario: Dual-supply audio preamplifier stage using NE5532 or OPA2134 op-amps.

IC Role / Device Role / Timing Role: Negative rail generator paired with L7815AC to form matched ±15 V split supply.

Use Value: ±2 % matching tolerance and identical thermal behavior enable balanced rail tracking under load asymmetry.

Programmable Logic Controller (PLC) I/O Module

Test & Measurement Equipment Biasing

Use Scenario: Isolated analog output module generating 4–20 mA signals with HART modulation capability.

IC Role / Device Role / Timing Role: Supplies isolated -15 V to DAC and current-sense amplifier circuitry.

Use Value: Internal short-circuit and thermal protection eliminate need for external fault-handling logic in field-deployed modules.

Use Scenario: Benchtop oscilloscope vertical amplifier stage requiring ultra-low-drift bias.

IC Role / Device Role / Timing Role: Low-drift (-0.9 mV/°C) negative supply for differential input stages and offset calibration circuits.

Use Value: Drift spec enables <±1 LSB error over 0–70 °C ambient without recalibration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar negative fixed-voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM337T/NOPB	Adjustable output (requires two resistors); ±1 % initial accuracy; higher dropout (2 V @ 1 A)	Requires external feedback network; less suitable for space-constrained fixed-rail designs	Select when programmability or tighter initial tolerance justifies added component count and board area
MC7915CTG	Same -15 V fixed output; TO-220 package; ±4 % tolerance; lower SVR (45 dB)	Looser output tolerance and reduced ripple rejection limit use in high-precision analog systems	Select for cost-sensitive industrial controls where ±4 % output and 45 dB SVR meet system requirements

Compared with LM337T/NOPB, L7915ACV-DG offers plug-and-play fixed regulation with lower dropout and better noise performance; versus MC7915CTG, it delivers tighter tolerance and superior supply rejection-making it preferred for precision analog and split-rail applications where rail symmetry and stability are critical.

Availability

L7915ACV-DG is available at Aetrix Electronics and suitable for industrial analog signal conditioning, split-rail op-amp power supplies, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for L7915ACV-DG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, analog chips, and MEMS sensors for industrial, automotive, and consumer markets.

L7915ACV-DG belongs to the L79xxAC series of three-terminal negative linear regulators, engineered for local on-card regulation in split-power-supply architectures and legacy analog systems demanding proven reliability and thermal robustness.

FAQ

What is the maximum input voltage for L7915ACV-DG?

The absolute maximum DC input voltage is -35 V for output voltages between -5 V and -18 V. For L7915ACV-DG (-15 V output), the recommended maximum continuous input is -30 V to maintain safe power dissipation and avoid exceeding junction temperature limits under full load.

Does L7915ACV-DG require an input bypass capacitor?

Yes - a minimum 2.2 µF solid tantalum capacitor is required at the input pin, placed within 10 mm of the device. This stabilizes the regulator against input impedance variations and prevents oscillation, especially when the regulator is located remotely from the main filter capacitor.

Can L7915ACV-DG be used in parallel for higher current?

No - direct parallel connection is not supported due to mismatched output voltages causing current hogging. To achieve >1.5 A, use an external pass transistor configured in series with the regulator, as shown in Figure 7 of the ST application note, with proper current-sharing resistors and thermal coupling.

Is L7915ACV-DG RoHS compliant and lead-free?

Yes - L7915ACV-DG is supplied in an ECOPACK®-compliant TO-220 package with lead-free second-level interconnect, meeting RoHS Directive 2011/65/EU and JEDEC JESD97 standards. The "DG" suffix explicitly denotes the RoHS-compliant variant per ST's ordering nomenclature.

L7915ACV-DG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Negative

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: -35V

Voltage - Output (Min/Fixed):: -15V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

L7915ACV-DG FAQ

1.How can I place an order for L7915ACV-DG through Aetrix?

Please submit a Request for Quotation (RFQ) for L7915ACV-DG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L7915ACV-DG reliable?

The price and inventory of L7915ACV-DG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7915ACV-DG is usually 5 days.

3.What payment methods are accepted for L7915ACV-DG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7915ACV-DG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L7915ACV-DG?

L7915ACV-DG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L7915ACV-DG order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L7915ACV-DG?

For technical support, including L7915ACV-DG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7915ACV-DG requirements.

6.How does Aetrix verify that L7915ACV-DG is sourced from the original manufacturer or authorized distributors?

All L7915ACV-DG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L7915ACV-DG meets industry standards.

7.What is the process for return or replacement of L7915ACV-DG?

All L7915ACV-DG units undergo pre-shipment inspection (PSI). If there is an issue with L7915ACV-DG, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L7915ACV-DG part is unused and in its original packaging.

Return procedure for L7915ACV-DG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …