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STMicroelectronics L7805CV-DG — Analog & Data Acquisition

STMicroelectronics L7805CV-DG LDO Regulator, 5V Fixed, 1.5A

MPNL7805CV-DG
Active

STMicroelectronics L7805CV-DG positive fixed LDO regulator, 5V output, 1.5A, TO-220-3 through-hole, tube packaging, 62dB PSRR at 120Hz.

$0.9800Ref. price · indicative, final on quote
PackagingTO-220-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

L7805CV-DG specifications
ParameterValue
Output typeFixed
MountingThrough Hole
Voltage - input35V
Voltage dropout2V @ 1A (Typ)
Voltage - output (Min (Fixed))5V
Output current1.5A
Current - quiescent8 mA
Operating temperature0°C~125°C
PSRR62dB (120Hz)
PackageTube
CaseTO-220-3
Protection featuresOver Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

The L7805CV-DG: ROHS3 compliant per, so it passes the material-restriction check for new builds shipping into EU or UKCA jurisdictions without an exemption review.

5 V rail from a wide input — 1.5 A continuous

Fixed 5 V output at up to 1.5 A continuous, with a maximum input voltage of 35 V. Quiescent current is 8 mA typical — moderate for a linear regulator of this output class. The 62 dB PSRR at 120 Hz attenuates line-frequency ripple from a rectified mains supply, which is the dominant noise source in a transformer-based power stage. Built-in over-temperature and short-circuit protection means the regulator survives a sustained output short or a thermal overload without external crowbar circuitry — the die shuts down and auto-recovers when the junction cools.

TO-220-3 footprint — heatsink-ready through-hole

The TO-220-3 through-hole package (supplier device package TO-220) has a standard 0.100-inch pitch lead frame and a metal tab that can be bolted to a heatsink or chassis. The tab is electrically connected to the output pin — account for isolation if the heatsink is grounded. Supplied in tube packaging, which is the typical handling format for through-hole parts in a pick-and-place or manual assembly line.

Operating temperature range and environment

Rated for 0°C to 125°C operating junction temperature — this covers commercial and most industrial indoor environments. Not specified for extended industrial (-40°C) or automotive temperature grades, so avoid it for engine-bay or cold-start applications.

Frequently asked questions

Will L7805CV-DG drop into a board that was specified around L7805ACV without rewiring?

Yes. The L7805ACV and L7805ACV-DG share the same pinout, package (TO-220-3), output current (1.5 A), and input voltage range (35 V max). The main difference is PSRR: the L7805ACV variants specify 68 dB at 120 Hz vs 62 dB for the L7805CV-DG. For most 5 V logic rails the 6 dB difference is negligible, but if the design relies on that extra ripple rejection for an analog front-end, the L7805ACV-DG is a drop-in swap.

What is the PSRR rating on the L7805CV-DG?

The listed PSRR is 62 dB at 120 Hz. This is the typical ripple rejection at line frequency — adequate for smoothing the 100/120 Hz ripple from a full-wave rectifier before feeding sensitive loads.

How can I order the L7805CV-DG or check availability?

The L7805CV-DG is an active STMicroelectronics part. Submit an RFQ through this listing for a firm price and lead time.