Texas Instruments UA78L02ACLPE3

Mfr. Part

UA78L02ACLPE3

Manufacturer

Luminary Micro and Texas Instruments

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Detailed Description

UA78L02ACLPE3 is a simple, robust, fixed positive linear voltage regulator that outputs 2.6 V at up to 100 mA. It operates from input supplies up to 20 V and comes in a TO-92-3 through-hole package. It offers strong protection features, stable operation with minimal external components, and is suitable for general-purpose point-of-load power rails in cost-sensitive designs.

Key Features

Fixed 2.6 V output voltage

Up to 100 mA output current

Positive regulator, single channel

Maximum input voltage 20 V

Maximum dropout 1.7 V at 40 mA

PSRR 51 dB at 120 Hz

Protections include over current, over temperature, reverse polarity, and short circuit

TO-92-3 package for through-hole mounting

Operating temperature 0 to 125 degrees Celsius

RoHS3 compliant

Key Advantages

Very easy to use and integrate on through-hole boards

Reliable regulation with built-in protection for harsh conditions

Low component count keeps BOM cost and complexity down

Wide input range supports many legacy and industrial supplies

Stable, predictable 2.6 V rail for low-power loads

Cost-effective choice for 100 mA applications

Packaging

Shipment format Bulk

Package type TO-92-3 also listed as TO-226-3 or TO-226AA

Material epoxy-molded plastic body with three tin-plated leads

Typical body size small, compact outline suitable for vertical mounting on perf or FR-4 boards

Mounting Through Hole

Supplier device package TO-92-3

Pin configuration typical front view with leads downward

Pin 1 Input

Pin 2 Ground

Pin 3 Output

Always verify pin order with the datasheet before assembly

Thermal characteristics typical TO-92 performance

Junction-to-ambient thermal resistance is high versus larger packages; use adequate airflow and keep dissipation in check

Example thermal calculation

Power dissipation equals Vin minus Vout times Iload

At Vin 9 V, Vout 2.6 V, I 0.1 A, power is approximately 0.64 W; ensure safe operation with ambient and board conditions

Electrical properties

Output type Fixed

Output configuration Positive

Output current 100 mA max

Dropout 1.7 V max at 40 mA

PSRR 51 dB at 120 Hz

Protection Over current, thermal shutdown, reverse polarity tolerance, short circuit

Lifecycle

Status Active based on the UA78L02 family’s continued use in many designs

Not near discontinuation under normal supply conditions

Equivalent or alternative models

Same family and footprint

UA78L02 variants with different ordering suffixes or packaging may be available; contact us for exact ordering codes that match TO-92 and RoHS needs

Functional alternatives from TI for 2.6 V rails with different packages or currents

TLV70026 200 mA SOT-23 LDO

LP2980-2.6 100 mA SOT-23 LDO

TPS7A02-2.6 200 mA ultra-low IQ LDO

TLV70526 150 mA SOT-23 LDO

LM1117-2.6 higher current SOT-223 LDO

Note footprint, dropout, and current ratings differ; pick the option that matches your mechanical and electrical needs

If you need drop-in through-hole replacements or other compatible options, please contact our sales team via the Y-IC website for tailored guidance

Key Application Areas

Fixed 2.6 V rails for sensors, small transceivers, logic ICs, and low-power modules

Post regulation from 9 to 12 V adapters for hobby and industrial boards

Noise-sensitive analog nodes that benefit from 51 dB PSRR at mains ripple frequencies

Embedded systems and development boards needing a simple 2.6 V supply

Instrumentation, test jigs, and production fixtures using through-hole assembly

Battery-backed equipment where simple, protected regulation is enough

Datasheet

Y-IC hosts the most authoritative datasheet for UA78L02ACLPE3 on our product page. We recommend you download and review it here to confirm pinout, thermal data, and application notes before design-in.

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