LDO Regulator: Input Voltage Range 2.5V to 5.5V

Component Specifications

Definition

A low-dropout linear regulator is an electronic component that maintains a stable output voltage with minimal voltage difference between input and output, commonly used in power management modules to provide clean power to sensitive circuits.

Working Principle

Operates by using a pass transistor controlled by feedback circuitry to regulate output voltage, maintaining stability despite input voltage variations and load changes.

Materials

Semiconductor silicon, copper leads, plastic encapsulation (e.g., epoxy resin), gold bonding wires

Technical Parameters

Parameter	Typical range	Notes & selection driver
Package Type	SOT-23, DFN, SOIC
Output Current	Up to 500mA
Output Voltage	1.2V to 3.3V
Dropout Voltage	200mV at 150mA
Quiescent Current	40μA typical
Input Voltage Range	2.5V to 5.5V
Operating Temperature	-40°C to +125°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Power Management Module

Electronic component within a Graphics Interface Controller that regulates and distributes power to various sub-circuits.

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Engineering Analysis

Risks & Mitigation

Thermal overload
Input voltage spikes
Output short circuit
ESD damage
Load transient instability

FMEA Triads

Trigger: Excessive power dissipation
Failure: Thermal shutdown or permanent damage
Mitigation: Implement proper heat sinking, ensure adequate airflow, and monitor junction temperature

Trigger: Input voltage exceeding maximum rating
Failure: Component breakdown and catastrophic failure
Mitigation: Add input protection circuits (TVS diodes, clamping circuits) and implement voltage monitoring

Trigger: Poor PCB layout
Failure: Oscillation and instability in output voltage
Mitigation: Follow manufacturer layout guidelines, minimize trace lengths, and use proper decoupling capacitors

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±2% output voltage accuracy over temperature range

Test Method

IEC 60747 semiconductor testing standards, JEDEC thermal cycling tests, output voltage stability under load transient conditions

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of LDO Regulator

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Advanced (Shenzhen) Electronics Co.,Ltd.

Shenzhen, Guangdong, CN

Also makes: Thyristor/Triac

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “LDO Regulator”
View source page ↗ advsemi.com · checked 2026-09-15

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the main advantage of LDO regulators over switching regulators?

LDO regulators provide cleaner output with lower noise and ripple, making them ideal for noise-sensitive applications like RF circuits and analog sensors.

How does dropout voltage affect LDO performance?

Lower dropout voltage allows the LDO to maintain regulation with smaller input-output voltage differences, improving efficiency and enabling operation with lower input voltages.

What are common failure modes for LDO regulators?

Thermal shutdown due to excessive power dissipation, output voltage drift from aging components, and latch-up from voltage transients are typical failure modes.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

LDO Regulator