9e102 Datasheet ^hot^

Set-top boxes, LCD TVs, and home appliances.

The 9E102 is a staple in modern electronics repair, particularly for:

manufactured by ROHM Semiconductor . This integrated circuit (IC) is a critical component in power management systems, designed to efficiently convert higher input voltages into stable, lower output voltages for sensitive electronic devices. Functional Overview and Architecture 9e102 datasheet

: Keep the loops containing input capacitors, the SW pin, and the output ground plane as short and wide as possible to minimize parasitic inductance and electromagnetic interference (EMI).

If you can tell me the or operating voltage you need, I can provide the recommended external components (like the inductor value) to help you get started with your design. 9E102 Datasheet, PDF - ALLDATASHEET.COM Set-top boxes, LCD TVs, and home appliances

loops short. The loop formed by the input capacitor, pin, and GND pin must be isolated tightly on the top layer to prevent electromagnetic interference (EMI) from coupling into the high-impedance FB traces. Repairing Common Laptop Motherboard Faults

Counterfeit SMD capacitors are common. Use these steps: Functional Overview and Architecture : Keep the loops

If you have a specific 9E102 variant (e.g., a black transistor-style package), please consult the service manual—some legacy RF modules used proprietary coding. When in doubt, measure twice, solder once.

: Disables switching if the output rail is shorted directly to ground.

The BD9E102FJ requires a minimal set of external components to function, making it easy to integrate into existing designs. Figure 1: Typical Application Circuit for 5V Output