. The value can be computed using the standard regulation formula:
Provide the following details in a reply, and I can narrow it down further:
| Parameter | Conditions / Note | Min. | Typ. | Max. | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | Operating range | 7.0 | — | 26.0 | V | | Output Voltage (VOUT) | Adjustable range | 1.0 | — | VIN × 0.7 | V | | Output Current (IOUT) | — | — | — | 1.0 | A | | Switching Frequency | — | 484 | 570 | 656 | kHz | | High-Side MOSFET RDS(on) | Typical value | — | 250 | — | mΩ | | Low-Side MOSFET RDS(on) | Typical value | — | 200 | — | mΩ | | Shutdown Current | EN = 0V, TA = 25°C | — | 0 | 2.0 | μA | | Operating Temperature | — | -40 | — | +85 | °C |
The identifier does not correspond to a single, universally recognized electronic component. In the semiconductor industry, part numbers typically consist of a base number (e.g., LM317, 74HC00) followed by temperature ranges, packages, or date codes. The string "9e102" appears to be either a partial marking , a lot code , or a specific manufacturer’s in-house coding (common in capacitors, inductors, or proprietary ICs).
Use a hot air station at roughly 260°C to 350°C to desolder the old chip.
Bootstrap pin. A capacitor connected between BST and SW provides the necessary gate-drive voltage for the high-side N-channel MOSFET.
The 9E102 datasheet refers to a specific electronic component, and I'll provide an overview of what it entails and how it can be used in a helpful blog post context.
In UK legislation, “9E102” appears as a technical note identifier related to . The classification specifically states: “In 9E102 ‘UAV’ means unmanned aerial vehicle systems capable of a range exceeding 300 km”. If your application involves aerospace or defense, you must check for this regulatory context. However, this is not related to the semiconductor device.
:
A minority of component listings also show a device labeled simply “9E102” in an SOP-8 package, with specifications distinct from the BD9E102FJ. However, the overwhelming majority of references to “9e102 datasheet” lead directly to the ROHM BD9E102FJ.
The 9E102 datasheet pertains to a high-efficiency, step-down (buck) regulator. It is often identified as a marking code or a specific variant for components like the MP1432DN-LF-Z , which is a 2A, 28V, 380kHz step-down converter. Package Type: SOP-8 (Standard 8-pin surface mount). Key Function:
For those looking to source parts, authorized distributors like Digi-Key and Mouser provide verified authentic components, though many repair professionals find success with "Original Brand New" listings on marketplaces like AliExpress when batch codes are provided. BD9E102FJ - uri=media.digikey
You will most commonly find the 9E102 in circuits requiring precise signal filtering or energy storage:
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.