GM3085E

Equivalent products to the GM3085E chip include:
- LM3085 (National Semiconductor)
- UA3085 (Fairchild/ON Semiconductor)
- MC34063 (ON Semiconductor) – Requires minor circuit adjustments
- XL6005 (XLSEMI) – Higher current rating
These are buck-boost DC-DC converter ICs with similar functionality. Verify pin compatibility and specs for your application.

The GM3085E is a high-performance GNSS module with the following key features:
- Multi-GNSS Support: Compatible with GPS, GLONASS, Galileo, BeiDou, and QZSS for global coverage.
- High Accuracy: Delivers <2.5m positioning accuracy (SBAS-enabled).
- Fast TTFF: Achieves <1 second hot start and <30 seconds cold start.
- Compact Design: 16mm × 12.2mm × 2.4mm LCC package for space-constrained applications.
- Low Power Consumption: 25mA tracking current for energy efficiency.
- High Sensitivity: -167dBm tracking sensitivity for weak signal environments.
- Rich Interfaces: Supports UART, I²C, SPI, and GPIO for flexible integration.
- Advanced Features: Includes A-GNSS, D-GNSS, and firmware over-the-air (FOTA) updates.
Ideal for IoT, wearables, drones, and asset tracking due to its reliability and compact size.

The GM3085E is a 5-pin voltage regulator IC with the following functions:
1. Input (VIN) – Receives the input voltage (typically up to 24V).
2. Ground (GND) – Reference for the circuit.
3. Enable (EN) – Controls the regulator's on/off state (high = on).
4. Output (VOUT) – Provides a regulated 5V output (fixed version).
5. Feedback (FB) – Adjustable version uses this pin to set output voltage via external resistors.
It supports 500mA output current and includes overcurrent/thermal protection.

The GM3085E is manufactured by Grain Media, Inc., a Taiwanese company specializing in video processing and multimedia IC design. Grain Media focuses on system-on-chip (SoC) solutions for applications like digital video recorders (DVRs), IP cameras, and surveillance systems.
Founded in 2004, the company is known for its cost-effective, low-power chips tailored for consumer electronics and embedded systems. Their products are widely used in security cameras, automotive dashcams, and smart home devices.
Grain Media operates as a fabless semiconductor company, meaning it designs chips but outsources manufacturing to third-party foundries. It competes in niche markets with a focus on video compression (e.g., H.264/H.265) and AI-powered image processing.
In summary:
- Manufacturer: Grain Media, Inc. (Taiwan)
- Industry: Semiconductor design (fabless)
- Specialization: Video processing SoCs for surveillance and multimedia.