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STMicroelectronics L7905CP — Analog & Data Acquisition

L7905CP STMicroelectronics Linear Regulator, -5V Fixed

MPNL7905CP
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STMicroelectronics L7905CP, fixed negative linear regulator, -5V output, 1.5A, TO-220-3 Full Pack (TO-220FP), through-hole, 0°C~125°C operating temperature, PSRR 60dB at 120Hz.

$1.4200Ref. price · indicative, final on quote
STMicroelectronics L7905CP datasheet (PDF)
PackagingTO-220-3 Full Pack
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

L7905CP specifications
ParameterValue
Output typeFixed
MountingThrough Hole
Voltage - input-35V
Voltage dropout1.4V @ 1A (Typ)
Voltage - output (Min (Fixed))-5V
Output current1.5A
Current - quiescent3 mA
Operating temperature0°C~125°C
PSRR60dB (120Hz)
PackageTube
CaseTO-220-3 Full Pack
Protection featuresOver Temperature, Short Circuit
Number of regulators1
Output configurationNegative

Product details

Fixed -5V negative rail for dual-supply designs

The STMicroelectronics L7905CP is a fixed -5V negative linear regulator in a TO-220FP through-hole package. It delivers up to 1.5A and includes over-temperature and short-circuit protection. Typical applications include providing the negative rail in dual-supply op-amp circuits, analog front-ends, or legacy -5V logic buses where a clean, regulated negative voltage is required.

The TO-220FP (full-pack, isolated tab) simplifies heatsinking — no insulating washer needed between the tab and the heatsink. Through-hole mounting suits point-to-point wiring or PCB layouts with a common negative rail plane.

No last-time-buy notice is in effect.

Frequently asked questions

What is the closest pin-compatible alternative to L7905CP?

Within the L79xx family, the L7905CV is a standard TO-220 version (non-isolated tab) with the same -5V fixed output and 1.5A rating. The L7905CP's full-pack (isolated) tab is the main difference — if your design relies on the isolated tab, stick with the CP suffix. For a direct cross, check the L7905CP datasheet for pin-compatible second sources from other manufacturers; no official ST alternate is published.