L7805ABV - 5V 1.5A Linear Regulator | STMicroelectronics
N.º da peça: L7805ABV ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0.1416 | $0,14 |
| 10 | $0.1416 | $1,42 |
| 100 | $0.1416 | $14,16 |
| 500 | $0.1416 | $70,80 |
| 1.000 | $0.1416 | $141,60 |
L7805ABV Visão geral
A linear voltage regulator converts an input voltage into a stable output by passing or regulating current rather than switching the supply through an inductor and switching node. The L7805ABV belongs to the linear regulator and voltage-regulator hierarchy, making it useful where a simple, low-noise 5 V rail is needed from a higher-voltage supply. Its fixed 5 V output simplifies designs that do not require an adjustable rail.
The key verified features include a 5.0 V nominal output, positive fixed regulation, a TO-220 package, and distributor-rated current capability shown as 1.5 A by DigiKey and 1.0 A by Mouser. The manufacturer datasheet search result also describes the family as suitable for output currents in excess of 1 A when adequate heat sinking is provided. Its internal current limiting, thermal overload protection, and safe operating-area protection improve robustness in local regulation circuits.
The device is suitable for industrial control boards, power-supply modules, embedded systems, instrumentation, and general-purpose 5 V regulation. Because a linear regulator dissipates the difference between input and output voltage as heat, input-to-output headroom and thermal management determine practical load capability. A TO-220 package also requires correct mechanical mounting and sufficient thermal path to the board or heatsink.
For a new design, check the minimum input voltage, dropout requirement, maximum input voltage, output-current budget, thermal limits, and required capacitor network against the current STMicroelectronics datasheet. Do not substitute a different package without confirming pinout, polarity, stability, and thermal requirements. The verified distributor data does not provide a complete current price ladder or lifecycle statement, so those values are not inferred here.
This page consolidates verified distributor identity and package information, manufacturer-family technical context, sourcing links, and design guidance intended to help engineers compare fixed 5 V linear regulators without treating package similarity as proof of drop-in compatibility.
Alternativas drop-in para L7805ABV — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com L7805ABV (mesmo formato e footprint) — diferindo em Output Voltage, RoHS Status, Mounting Type, Package, Dropout Voltage.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
L7805CV
✅ Drop-In✓ Em estoque
$0.1464 / unidade
Ver ficha técnica →L7805CV
✅ Drop-In✓ Em estoque
$0.1464 / unidade
Ver ficha técnica →L7805CV
✅ Drop-In✓ Em estoque
$0.1464 / unidade
Ver ficha técnica →L7805AB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC7805ACTG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
L7805ABV Classificações máximas e características elétricas
| Product Type | Fixed positive linear voltage regulator |
| Tensão de saída | 5.0 V |
| Configuração de saída | Single output |
| Output Polarity | Positive |
| DigiKey Rated Output Current | 1.5 A |
| Mouser Rated Output Current | 1.0 A |
| Manufacturer Family Current Capability | In excess of 1 A with adequate heat sinking |
| Encapsulamento | TO-220 |
| Pins | 3 terminals |
| Tipo de montagem | Through-hole |
| Internal Current Limiting | Included |
| Thermal Overload Protection | Included |
| Safe Operating Area Protection | Included |
| Regulation Type | Linear |
| Dropout Class | Low-dropout regulator family |
| Status RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
Guia de Configuração de Pinos do L7805ABV to-220
Configuração de pinos para L7805ABV (pacote to-220). Este dispositivo de potência possui terminais de gate, drain e source. Para pacotes não polarizados, consulte o datasheet do fabricante para a orientação exata do pino 1 e detalhes do footprint. Aplicações comuns incluem projeto de fontes de alimentação, acionamento de motores e comutação de cargas.
Nenhum dado detalhado de pinagem disponível para L7805ABV.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
L7805ABV é adequado para 6 aplicaçãos: Embedded control-board 5 V rail, Industrial instrumentation power supply, Retrofit and hobby electronics power module, Audio and low-noise analog supply, Motor-control auxiliary supply, Industrial sensor-node regulator.
Embedded control-board 5 V rail
The L7805ABV fits embedded control boards that convert a higher DC rail into a fixed 5 V supply for processors, logic, sensors, and communication modules. Its fixed 5.0 V output removes the adjustment network required by an adjustable regulator, while the three-terminal TO-220 package supports through-hole assembly and straightforward inspection. The main design issue is heat: a linear regulator dissipates the difference between input and output voltage, so a 12 V-to-5 V conversion at substantial load requires copper area or a heatsink. Verify the regulator current rating, dropout behavior, startup stability, and thermal limits in the STMicroelectronics datasheet before finalizing the rail.
Recomendado
Industrial instrumentation power supply
The L7805ABV is appropriate for local regulation in industrial instrumentation where a clean, fixed 5 V rail is needed close to analog or digital circuitry. A three-terminal linear regulator can reduce the need for complex output sequencing, while the TO-220 package provides a conventional through-hole thermal and mechanical format. The trade-off is that linear regulation produces heat proportional to the voltage drop and current, unlike a switching regulator. Use the verified 5.0 V output and manufacturer protection features as the starting point, then confirm maximum input voltage, load transient behavior, ambient temperature, and thermal resistance in the official datasheet.
Recomendado
Retrofit and hobby electronics power module
The L7805ABV is well suited to retrofit boards, educational electronics, and hobby power modules because the TO-220 package and three-terminal architecture are easy to inspect and wire. It can provide a fixed 5 V output from a higher-voltage DC source without an external adjustment resistor, and the manufacturer family includes current limiting, thermal shutdown, and safe-area protection. Because the package is through-hole, designers must account for lead spacing, orientation, and adequate copper thermal paths. Verify the exact pinout and electrical limits from the STMicroelectronics datasheet; distributor listings alone do not establish every replacement or layout detail.
Recomendado
Audio and low-noise analog supply
The L7805ABV can serve as a local 5 V regulator for audio, sensor, and other noise-sensitive analog sections when the upstream supply is above the required dropout headroom. A linear regulator avoids the switching node of a buck converter, which can help simplify power filtering for sensitive analog circuits. However, the verified data does not provide a noise specification, ripple figure, or measured PSRR for this exact MPN, so it should not be selected solely for a noise-sensitive requirement without reviewing the official datasheet. Keep input and output decoupling close to the device and validate the final rail under the intended load.
Recomendado
Motor-control auxiliary supply
The L7805ABV can provide a fixed 5 V auxiliary rail for controller logic, gate-driver support circuits, sensors, and communication hardware in a motor-control system. Separating the low-voltage control rail from a higher-voltage power stage can simplify the controller's power architecture and keep the sensitive section behind a conventional linear regulator. The thermal requirement depends on the difference between the auxiliary input and 5 V output and on the control-load current. A 24 V auxiliary input, for example, would require substantially more heat management than a 9 V input at the same load. Confirm the exact input range and current capability before using it in a 24 V design.
Recomendado
Industrial sensor-node regulator
The L7805ABV is suitable for a local 5 V branch in an industrial sensor node when a higher-voltage bus must be reduced close to the sensing electronics. The fixed output is useful for analog front ends, digital converters, and communication modules that share a conventional 5 V supply. Because the device is a linear regulator, long cable drops and large input-to-output differences can increase heat and reduce available current margin. Use the distributor-identified 5.0 V output and TO-220 format, but verify maximum input voltage, thermal shutdown behavior, dropout, and environmental ratings from the manufacturer documentation. Add local decoupling and test the assembled node under worst-case load and temperature.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para L7805ABV — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | L7805CV | L7805C | L7805 | MC7805ACTG |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | onsemi |
| Package | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 |
| Output Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Output Polarity | Positive | Positive | Positive | Positive | Positive |
| Regulation | Linear | Linear | Linear | Linear | Linear |
| Drop-in Status | Target part | Potential; verify exact pinout and electrical limits | Potential; verify exact pinout and electrical limits | Potential; verify exact pinout and electrical limits | Potential; verify exact pinout and electrical limits |
Principais diferenciais
- Fixed 5.0 V regulation (vs L7805CV)
- Manufacturer-specific family support (vs MC7805ACTG)
- TO-220 through-hole construction (vs L7805C)
Notas de projeto
Estimate regulator dissipation as P_D approximately equal to (V_IN - V_OUT) multiplied by I_OUT, then add the quiescent-current contribution. For example, a 12 V input, 5 V output, and 0.5 A load gives an estimated 3.5 W before quiescent-current effects. Validate that the TO-220 thermal path, copper area, ambient temperature, and optional heatsink keep the junction below the manufacturer limit.
Place the input and output capacitors close to the regulator terminals and follow the manufacturer datasheet for capacitor values, tolerances, and ESR requirements. Keep high-current copper paths short and wide, provide adequate clearance around the TO-220 body, and confirm the package hole pattern and lead orientation against the mechanical drawing. The verified snippets do not provide the exact capacitor recommendations.
Do not treat the L7805 suffix, package name, or similar function as proof of interchangeability. Confirm input pin, output pin, ground pin, maximum input voltage, dropout voltage, current limit, thermal shutdown, and output tolerance for every candidate. The distributor snippets conflict on current rating, so the replacement decision should use the official manufacturer datasheet rather than marketplace metadata.
Informações de conformidade
The supplied verified results do not provide extractable RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for L7805ABV. The product is not described as an automotive-qualified device, so AEC-Q100 is recorded as not_applicable rather than qualified.
