Specifications
| Attribute | Value |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Discontinued at Digi-Key |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.69V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Current - Output | 1A |
| Frequency - Switching | 2.25MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Overview
Description
BD90571EFJ-CE2 is a ROHM Semiconductor IC from the BD9057x family. It is a compact power-management device used to regulate voltage in electronic systems. The device typically implements a DC-DC converter with integrated switching elements and protective features (overcurrent, overtemperature, undervoltage lockout). The “CE2” suffix denotes a specific packaging/variant. Typical applications include portable devices, automotive electronics, and display backlighting where efficient voltage regulation is needed. For exact specifications—pinout, input/output ranges, efficiency, operating conditions, and protection details—consult the official ROHM datasheet and product page for BD90571EFJ-CE2.
Manufacturer
- Manufacturer: ROHM Semiconductor (ROHM Co., Ltd.)
- What kind of company: A Japanese multinational manufacturer of semiconductors and electronic components (ICs, diodes, transistors, power devices, sensors) used in automotive, consumer electronics, and industrial applications.
- What kind of company: A Japanese multinational manufacturer of semiconductors and electronic components (ICs, diodes, transistors, power devices, sensors) used in automotive, consumer electronics, and industrial applications.
Package
BD90571EFJ-CE2 uses ROHM’s EFJ leadless package (QFN-type). For exact dimensions and pin count, please refer to the official datasheet.
