What Lumissil Microsystems does

Lumissil Microsystems is a private, Milpitas (US)-based analog and mixed-signal semiconductor company founded in 2005 with 51-100 employees. The company designs and markets a portfolio of LED driver ICs and Green PHY communication semiconductors oriented to two primary end markets: automotive exterior and interior lighting for OEMs and Tier 1 suppliers, and electric-vehicle charging communications hardware for charger OEMs.

Its product line includes the IS32LT3962 dual-channel high-voltage LED controller for 48V automotive lighting, the IS32FL3776 matrix LED driver supporting up to 216 individually addressable LEDs, the IS32LT3136 32-channel linear LED driver for OLED rear lamps and ambient lighting (compliant with ISO 26262 ASIL-B), the IS32FL3105 LumiBus family of RGB LED drivers, and the IS32CG5317 Green PHY chip. The Green PHY device is embedded into the ChargeBridge System-on-Module, co-developed with Pionix GmbH on the EVerest open-source EV-charging stack, which powers more than 400,000 charging stations globally and supports ISO 15118-2/-20, CCS, CHAdeMO, MCS, GB/T, and OCPP 1.6/2.0.1/2.1.

Lumissil monetizes through one-time hardware sales of proprietary ICs at volume-based pricing, distributed globally via authorized distributors and direct enterprise sales representatives, with design-in engagement against automotive Tier 1s and EV-charger manufacturers. The company is privately held, discloses no revenue, has no reported funding events, and operates without public ownership, leadership, or financial detail in the available data.

Name

Lumissil Microsystems

Website

https://lumissil.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

51–100 employees

Short description

Lumissil Microsystems is a private, Milpitas-based semiconductor company that designs LED driver ICs and Green PHY communication chips for automotive lighting and electric-vehicle charging applications, serving OEMs and Tier 1 suppliers globally.

Ownership category

akta.pro rank

Product category

Automotive Semiconductor ICs

NAICS

Semiconductor and Related Device Manufacturing (334413)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

EV/Industrial Charging Power Electronics (Chargers, rectifiers, power stages) (IMAGADAF)

akta.pro secondary industry

High-Voltage, Power Discretes & Modules (IGBT/MOSFET/SiC/GaN) (HDAHAAAK)

Keywords

• LED driver ICs
• Automotive semiconductors
• Power management ICs
• EV charging semiconductors
• Automotive lighting solutions

Headquarters

HQ city

Milpitas

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Semiconductor chip sales: Lumissil generates revenue through the sale of proprietary semiconductor chips including LED drivers and communication ICs. Revenue is one-time hardware sales with volume-based pricing for automotive OEMs and Tier 1 suppliers.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels2 records

Core offering

Lumissil Microsystems designs and manufactures proprietary LED driver integrated circuits and Green PHY communication semiconductors for automotive lighting and EV charging applications. Its portfolio includes high-voltage LED controllers for 48V automotive systems, matrix LED drivers, multi-channel linear drivers for OLED lighting, and Green PHY chips embedded in pre-certified EV charging modules. The company sells these chips directly to automotive OEMs, Tier 1 suppliers, and EV charger manufacturers through authorized distributors and direct sales representatives.

Product overview

Lumissil Microsystems is a semiconductor firm specializing in LED drivers and power management ICs for automotive applications. The product portfolio includes high-voltage LED controllers (IS32LT3962), matrix LED drivers (IS32FL3776), 32-channel linear LED drivers for OLED lighting (IS32LT3136), RGB matrix LED drivers (IS32FL3105 LumiBus™), and the IS32CG5317 Green PHY semiconductor for EV charging. The company also partners with Pionix GmbH on ChargeBridge, a pre-certified System-on-Module combining Lumissil's chip technology with EVerest open-source software for EV charging infrastructure.

Differentiator

Problem solved

Functional benefit

Brands

• LumiBus™: RGB LED driver product family interface technology for automotive lighting modules.

Products and services

• IS32LT3962 Dual-Channel LED Controller High-voltage dual-channel LED controller IC for 48V automotive systems, supporting 5-80V input/output range. Enables Lamp Driver Modules to drive two independent high-voltage LED strings with a single IC, reducing PCB space, wiring complexity, and thermal stress. Supports buck, buck-boost, SEPIC, or boost topologies for automotive OEMs and Tier 1 suppliers.
• IS32FL3776 Matrix LED Driver Matrix LED driver IC for automotive software-defined exterior lighting supporting up to 216 individually addressable LEDs in a 36x6 matrix configuration with high-resolution dithered PWM control. Integrates diagnostic and protection features including LED open/short detection, overcurrent protection, thermal shutdown, and CRC error detection, targeting CISPR 25 EMC compliance for automotive OEMs.
• IS32LT3136 32-Channel Linear LED Driver 32-channel linear LED driver IC with UART interface for automotive OLED lighting applications including rear lights, DRLs, and ambient lighting. Features 32 independently controlled channels with up to 22V output capability, 12-bit PWM dimming, ±4% current accuracy, and ISO 26262 ASIL-B safety compliance. Available in 6x6mm QFN-48 package with operation from -40°C to +150°C.
• IS32FL3105 LumiBus RGB Matrix LED Driver Family of RGB LED driver ICs designed for automotive lighting applications supporting up to 12 RGB LEDs, marketed under the LumiBus trademark interface technology for automotive lighting module manufacturers.
• IS32CG5317 Green PHY Chip Green PHY semiconductor chip used in EV charging communication for AC and DC EV charging applications. Supports ISO 15118-2/-20, MCS, CCS, CHAdeMO, GB/T, and OCPP 1.6/2.0.1/2.1 protocols. Powers the ChargeBridge System-on-Module solution for EV charger manufacturers.
• ChargeBridge System-on-Module Pre-certified plug-and-play System-on-Module for EV chargers that combines EVerest open-source charging software with Lumissil's IS32CG5317 Green PHY chip. Supports CCS, CHAdeMO, MCS, GB/T, ISO 15118-2/-20, and OCPP 1.6/2.0.1/2.1 standards to accelerate time-to-market for EV charger manufacturers.

Quantifiable outcome

• Supports transition from 12V to 48V automotive systems with reduced wiring harness cost and weight
• +2 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Pionix GmbHcoreStrategic or Co-development Partner · 9 March 2026Pionix GmbH and Lumissil Microsystems have expanded their collaboration to develop and distribute ChargeBridge, a pre-certified plug-and-play System-on-Module combining Lumissil's IS32CG5317 Green PHY chip with Pionix's EVerest open-source EV charging software. The solution enables EV charger manufacturers to reduce development cycles and achieve interoperability across global charging standards including CCS, CHAdeMO, MCS, GB/T, and OCPP 1.6/2.0.1/2.1. The EVerest ecosystem powers over 400,000 charging stations globally.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• NXP Semiconductors: Leading automotive MCU and analog supplier with Green PHY silicon for ISO 15118 EV charging communication. Directly competes with Lumissil's IS32CG5317 Green PHY in EV charger communications while also providing broader automotive lighting control solutions.
• Renesas Electronics: Major Japanese automotive semiconductor supplier offering LED drivers, MCUs, and analog ICs for body and lighting applications. Competes with Lumissil's automotive lighting portfolio and benefits from established Tier 1 relationships.
• Texas Instruments: One of the largest analog semiconductor companies globally with an extensive portfolio of automotive LED drivers, matrix LED controllers, and functional-safety-qualified devices. Competes with Lumissil across virtually all automotive lighting sockets but as part of a much broader analog portfolio.
• ON Semiconductor (onsemi): Major automotive semiconductor supplier with strong positions in LED drivers, power management, and EV charging components. Direct overlap with Lumissil in automotive exterior lighting and EV charging applications but with substantially broader portfolio and scale.
• Infineon Technologies: Global leader in automotive power semiconductors with LED driver families for exterior lighting and significant presence in EV charging. Provides functional-safety-qualified devices comparable to Lumissil's ASIL-B portfolio but at much greater scale.
• STMicroelectronics: European automotive semiconductor leader with broad LED driver portfolio for headlights, tail lamps, and ambient lighting, plus significant EV power electronics. Competes with Lumissil across automotive lighting and EV charging semiconductor sockets.

Direct peers

• ROHM Semiconductor: Japanese analog and power semiconductor company with automotive LED driver families and strong EV charging silicon portfolio. Directly comparable to Lumissil in automotive lighting ICs and EV charging semiconductors, with broader overall scale.
• Diodes Incorporated: Analog semiconductor company with broad LED driver portfolio including automotive matrix and RGB LED controllers. Similar scale and product positioning to Lumissil in discrete and analog LED driver markets.
• Monolithic Power Systems: Specialist analog and power semiconductor company with LED driver products for automotive and general lighting, plus strong positions in EV/industrial charging power stages. Comparable to Lumissil in product mix and focus on high-performance analog ICs.
• Allegro MicroSystems: Specialist in automotive analog ICs including LED drivers for headlights, DRLs, and interior lighting. Closely comparable to Lumissil in automotive lighting focus and customer base (Tier 1 suppliers), though larger and more diversified into magnetic sensors and motor drivers.

Market position

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Lumissil Microsystems