It8995e — 128 Datasheet

This IC is commonly used in Asus motherboards, such as the Asus X407UB Rev 2.0. Repair & Installation Tips

Acts as a Power IC/SIO controller to manage power-on sequences and hardware monitoring in personal electronics and enterprise systems. Embedded Systems:

The IT8995E is typically housed in a with 128 pins .

Analog power supply for the internal Analog-to-Digital Converters (ADC). GND / AGND: Digital and analog ground reference lines. Communication Interfaces it8995e 128 datasheet

The 3.3V Always-On regulator activates, supplying power to the VSTB pins of the IT8995E.

: Legacy LPC interface pins used for host communication on older architectures.

Main 3.3V rail. Turns on after the system departs the S5/Standby power state. AGND / GND: Analog and digital ground connections. 2. System Control & Power Sequencing This IC is commonly used in Asus motherboards,

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: Output signal enabling the 3.3V/5V secondary regulators or system power rails.

Signals the main charging IC to adjust charge current and voltage thresholds dynamically. 3. General Pinout Structure and Signal Descriptions : Legacy LPC interface pins used for host

If the IT8995E-128 feels hot to the touch immediately after connecting a power supply, it has suffered an internal short circuit. This usually happens when a high-voltage rail (like the 19V primary rail) accidentally shorts into a 3.3V data line, or if a USB/HDMI port back-feeds voltage. The chip must be replaced. Corrupted Firmware Symptoms

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In short, without a properly functioning IT8995E‑128, a laptop will not power on, will not charge its battery, and will not respond to the power button.

The IT8995E is a high-performance, low-power with integrated Super I/O functionality. It is designed to sit alongside the main CPU (Intel or AMD) and PCH (Platform Controller Hub) to manage the system's "always-on" logic.

The IT8995E-128 manages critical hardware operations before and after the main Operating System boots. It functions independently of the primary CPU.