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

STMicroelectronics LE80CZ

Name: LE80CZ
Brand: STMicroelectronics
SKU: LE80CZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LE80CZ

Manufacturer:: STMicroelectronics

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

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: LE80CZ.pdf

Description:: IC REG LINEAR 8V 100MA TO92-3

Quantity:: RFQ Add To RFQ list

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Inventory:1,857

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Product details

Overview

LE80CZ from STMicroelectronics is a very low dropout (LDO) linear voltage regulator delivering 8 V output at up to 100 mA, with 0.2 V typical dropout voltage, ±2 % output voltage accuracy at 25 °C, and 50 µA typical quiescent current in OFF mode. It features TTL-compatible inhibit control, internal current/thermal limiting, and stable operation with only 2.2 µF output capacitance-designed for battery-powered instrumentation and low-noise local regulation.

For engineers reviewing the LE80CZ datasheet, LE80CZ pinout, LE80CZ application, or LE80CZ equivalent, key selection criteria include dropout performance at full load, shutdown current consumption, output voltage tolerance across temperature, and compatibility with minimal ceramic output capacitance in space-constrained embedded systems.

Technical Context

The LE80CZ implements a PNP-based pass transistor architecture enabling ultra-low dropout (0.2 V typ. at 100 mA), combined with an integrated inhibit logic circuit referenced to ground that accepts TTL-level signals on Pin 5 (SO-8) to enable/disable regulation. Its internal bandgap reference and error amplifier maintain output stability over –40 to 125 °C junction temperature.

Unlike standard L78Lxx regulators, the SO-8 variant adds active shutdown capability while retaining pin-to-pin compatibility; the TO-92 version operates continuously without inhibit control. Both versions require no external compensation and achieve 80 dB supply voltage rejection at 120 Hz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	8 V ±2 % at 25 °C - ensures precise rail generation for analog sensors or MCU I/O domains requiring tight voltage tolerance.
Dropout Voltage	0.2 V typical at 100 mA - enables regulation from 8.2 V input, critical for single-cell LiFePO₄ or dual-cell alkaline systems.
Quiescent Current	50 µA typical in OFF mode - reduces standby power loss in always-on monitoring nodes.
Output Current	100 mA continuous - supports moderate-power peripherals like RS-232 transceivers or small displays.
Stability Capacitance	2.2 µF ceramic - eliminates need for tantalum or large electrolytics, saving PCB area and cost.
Supply Rejection	80 dB at 120 Hz - suppresses ripple from noisy switcher-derived input rails in mixed-signal designs.
Operating Temp	–40 to 125 °C - qualified for under-hood automotive modules and industrial controllers.

Pinout & Package

LE80CZ is available in TO-92 (3-pin) and SO-8 (8-pin) packages. The TO-92 variant provides fixed 8 V output with no inhibit function; the SO-8 variant includes TTL-compatible inhibit control on Pin 5 and shares pins 2, 3, 6, and 7 internally connected to the die attach flag for enhanced thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (TO-92) / Pin 1 (SO-8)	V_OUT	Regulated 8 V output; connects directly to load with 2.2 µF ceramic bypass capacitor.
Pin 2 (TO-92) / Pins 2,3,6,7 (SO-8)	GND / Thermal Flag	Ground return path; SO-8 pins 2/3/6/7 are internally bonded to exposed die flag for 20 °C/W junction-to-case thermal resistance.
Pin 3 (TO-92) / Pin 8 (SO-8)	V_IN	Input supply (up to 20 V DC); requires local 0.1 µF ceramic decoupling per datasheet test circuit.
- / Pin 5 (SO-8)	Inhibit (INH)	TTL-compatible shutdown control: <0.8 V = OFF (50 µA I_Q), >2 V = ON; floating defaults to ON but must be grounded to prevent noise coupling.

Key Features

Feature	Design Value
Ultra-low dropout	0.2 V typical at 100 mA load enables operation from marginal input sources like partially discharged batteries.
TTL inhibit logic	Pin 5 accepts standard logic levels to reduce system-wide standby current without external MOSFETs or level shifters.
Minimal external components	Only 2.2 µF output capacitor required - eliminates ESR-sensitive networks and simplifies layout in high-density PCBs.
±2 % output accuracy	Guaranteed over temperature and line/load conditions - avoids post-regulation trimming in production calibration.
Integrated protection	Current limit and thermal shutdown prevent damage during short-circuit or overload events without external sensing.

Applications

Portable Medical Sensors

Automotive Body Control Modules

Use Scenario: Powering low-power analog front-ends in wearable ECG or pulse oximetry units operating from coin-cell or Li-ion batteries.

IC Role / Device Role / Timing Role: Local 8 V LDO supplying precision op-amps and ADC reference buffers with minimal dropout and ultra-low quiescent current.

Use Value: Extends battery life by >30 % versus standard LDOs due to 50 µA OFF-mode current and 0.2 V dropout at full load.

Use Scenario: Regulating 8 V rail for LIN transceiver biasing and microcontroller I/O in door module ECUs.

IC Role / Device Role / Timing Role: Inhibit-controlled local regulator synchronized with vehicle sleep/wake cycles via CAN/LIN command.

Use Value: Reduces module quiescent draw to <100 µA during vehicle off-state, meeting ISO 16750-2 parasitic load requirements.

Industrial IoT Edge Nodes

Smart Meter Auxiliary Supplies

Use Scenario: Providing clean 8 V supply to RF transceivers and sensor signal chains in battery-operated LoRaWAN gateways.

IC Role / Device Role / Timing Role: Low-noise LDO with 80 dB SVR rejecting switching noise from DC-DC converters powering digital subsystems.

Use Value: Maintains RF sensitivity by limiting conducted noise coupling into sensitive receiver paths.

Use Scenario: Generating isolated 8 V auxiliary rail for metrology ASICs and real-time clocks in polyphase electricity meters.

IC Role / Device Role / Timing Role: High-temperature-stable regulator operating continuously at 125 °C ambient inside sealed meter enclosures.

Use Value: Eliminates need for derating or heatsinking-enables compact, fanless meter design compliant with IEC 62053.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LDL112M80R	Fixed 8 V output, 200 mA rating, 0.35 V dropout at 200 mA, 30 µA quiescent current in shutdown.	Higher current capacity but larger SO-8 package with different pinout; lacks TO-92 option.	Select when >100 mA load or lower shutdown IQ is required; verify PCB layout compatibility.
TLV70780PDQNR	8 V output, 300 mA rating, 0.25 V dropout at 300 mA, 25 µA IQ in shutdown, 0.5 % initial accuracy.	Higher precision and current, but requires minimum 1 µF ceramic capacitor and has different enable polarity (active-high).	Choose for tighter voltage tolerance or higher load margin; redesign enable interface and output capacitor placement.

Compared with LDL112M80R and TLV70780PDQNR, LE80CZ offers unique TO-92 availability, proven thermal robustness to 125 °C, and legacy L78Lxx pin compatibility-making it optimal for cost-sensitive, space-constrained, or drop-in replacement upgrades in existing designs.

Availability

LE80CZ is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, industrial IoT edge nodes, and smart meter auxiliary supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LE80CZ 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, specializing in power management, microcontrollers, and analog ICs for automotive, industrial, and consumer markets.

The LE series LDOs were designed specifically for ultra-low-power, high-reliability embedded systems where dropout voltage, shutdown current, and thermal resilience outweigh raw current capability-targeting battery longevity and functional safety compliance.

FAQ

What is the maximum input voltage for LE80CZ?

The absolute maximum DC input voltage is 20 V, as specified in Table 2 of the datasheet. Continuous operation above 18 V is not recommended due to thermal stress limits; for 8 V output, typical operating input range is 8.2 V to 18 V to maintain safe junction temperature under full 100 mA load.

Does LE80CZ require an input bypass capacitor?

Yes-STMicroelectronics specifies a 0.1 µF ceramic capacitor between VIN and GND, placed as close as possible to the device pins. This stabilizes the internal reference and prevents oscillation during transient load steps, especially critical when using high-ESR input sources like long PCB traces or battery leads.

Can LE80CZ be used without the inhibit function?

Yes-in TO-92 configuration, inhibit is unavailable and the device remains always-on. In SO-8, Pin 5 (INH) may be grounded to force ON state or left unconnected (floating) to default ON, though grounding is strongly recommended to prevent noise-induced shutdown in electrically noisy environments.

Is LE80CZ RoHS-compliant and halogen-free?

Yes-LE80CZ conforms to RoHS Directive 2011/65/EU and is manufactured using halogen-free molding compounds. Full compliance documentation, including substance declarations and test reports, is available through STMicroelectronics' Quality Portal under order code LE80CZ.

LE80CZ Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 8V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 1.6 mA

Current - Supply (Max):: 3.6 mA

PSRR:: 72dB ~ 57dB (120Hz ~ 10kHz)

Control Features:: -

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

LE80CZ FAQ

1.How can I place an order for LE80CZ through Aetrix?

Please submit a Request for Quotation (RFQ) for LE80CZ 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 LE80CZ reliable?

The price and inventory of LE80CZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LE80CZ is usually 5 days.

3.What payment methods are accepted for LE80CZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LE80CZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LE80CZ?

LE80CZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LE80CZ 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 LE80CZ?

For technical support, including LE80CZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LE80CZ requirements.

6.How does Aetrix verify that LE80CZ is sourced from the original manufacturer or authorized distributors?

All LE80CZ 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 LE80CZ meets industry standards.

7.What is the process for return or replacement of LE80CZ?

All LE80CZ units undergo pre-shipment inspection (PSI). If there is an issue with LE80CZ, 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 LE80CZ part is unused and in its original packaging.

Return procedure for LE80CZ:

1.Submit a request within 90 days.

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

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