Switching node. Connected directly to the external power inductor. Application and Circuit Design
Power supply input pin. Must be decoupled locally with low-ESR ceramic capacitors.
The 9E102 datasheet is a crucial document for anyone working with the 9E102 electronic component. This datasheet provides detailed information about the component's specifications, features, and applications. In this article, we will delve into the world of the 9E102 datasheet, exploring its contents, and helping you understand how to use it effectively.
It typically includes over-current protection (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO) to prevent damage during fault conditions. Common Applications 9e102 datasheet
The outlines the full technical specifications of the BD9E102FJ-GE2 Go to product viewer dialog for this item.
The part number most commonly refers to the BD9E102FJ , a high-efficiency synchronous buck DC/DC converter manufactured by Rohm Semiconductor . It is frequently used in laptop motherboards and other consumer electronics requiring precise voltage regulation. Technical Overview
I can help calculate precise passive component values or guide you through a step-by-step diagnostic process. Share public link Switching node
) higher than the peak buck converter current limit to prevent core saturation. Feedback Resistor Divider (
The ROHM BD9E102FJ is typically used to convert high-voltage rails (such as 12V or 24V) down to lower logic or system voltages (like 5V).
is a current-mode control DC/DC converter, allowing for high-speed transient response and simple loop compensation. It operates efficiently under light-load conditions due to ROHM's proprietary SLLM™ (Seamless Light Load Mode) technology. Must be decoupled locally with low-ESR ceramic capacitors
Engineers evaluating this converter will appreciate the comprehensive protection features included in the design:
The IC comes in an 8-pin SOP-J8 package, providing a balance of compact size and easy routing. High-side MOSFET drive supply pin. VINcap V sub cap I cap N end-sub : Input power supply pin. EN: Enable pin (shutdown/startup). AGND: Analog ground. FB: Feedback input pin. COMP: Compensation pin. PGND: Power ground. SW: Switching output pin. 6. Layout Guidelines
It is important to check the lifecycle status of these components before design-in. Both the BD9E102FJ-E2 and the BD9E102FJ-EVK-001 evaluation board are marked as Obsolete (Not Recommended for New Designs) by major distributors. The BD9E102FJ-GE2 is listed as "No Longer Manufactured" by some vendors but may still be available in limited stock. It is recommended to use these only for legacy support or refer to ROHM for newer, active replacements.
ROHM offers a family of synchronous buck converters with similar footprints but different specifications. When you search for “9e102 datasheet,” you may encounter these other parts.
