BD9P255EFV-CE2

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BD9P255EFV-CE2

NANO PULSE CONTROL, 3.5V TO 40V

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規格

Package Tape & Reel (TR),Cut Tape (CT)
Series Automotive, AEC-Q100
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 3.5V
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 5V
Current-Output 2A
Frequency-Switching 2.2MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TA)
MountingType Surface Mount
Package/Case 20-VSSOP (0.173, 4.40mm Width) Exposed Pad

概述

Description

BD9P255EFV-CE2 is ROHM’s high-efficiency synchronous buck regulator IC with integrated MOSFETs. It steps down a higher input voltage to a lower, regulated output for digital rails.
Key features (typical):
- Up to about 2 A output current
- Wide input voltage range (suitable for automotive/industrial levels)
- Output set by external feedback network (configurable per design)
- Current‑mode control with soft-start
- Protections: undervoltage lockout, overcurrent/short-circuit protection, thermal shutdown
- High efficiency and compact packaging
Package: EFV-CE2, a small lead-free surface-mount package suitable for compact boards.
Applications: automotive and industrial power rails, microcontroller/FPGA DSP supplies, embedded systems needing a reliable DC-DC step-down.
Note: exact input/output ranges, switching frequency, and recommended external components vary by variant; consult the BD9P255EFV-CE2 datasheet and ROHM application notes for precise specifications and design guidelines.

Features

BD9P255EFV-CE2 is a ROHM BD9P family synchronous buck regulator (DC-DC converter) intended for automotive/industrial power management. Key features typically include:
- Synchronous buck topology with integrated high- and low-side MOSFETs
- Wide input voltage range suitable for automotive applications
- Adjustable output (via external resistors) or fixed-output option
- Enable pin and soft-start to suppress inrush
- High efficiency and good load-transient response
- Protective functions: undervoltage lockout, overcurrent/short-circuit protection, overvoltage protection, and thermal shutdown
- Output discharge when disabled
- Compact CE2 package; RoHS-compliant
- Optional status/diagnostic signals (e.g., PGOOD/FAULT) depending on variant
Note: exact electrical specs, pinout, and available options are in the official datasheet for BD9P255EFV-CE2.

Package

BD9P255EFV-CE2 uses ROHM’s EFV package: a QFN 3.0×3.0 mm with an exposed pad.

Pinout

- Pin count: 8 pins (8-pin package).
- Function: BD9P255EFV-CE2 is a buck switching regulator. Pin functions (typical BD9P pinout): VIN (input supply), GND (ground), LX (switch node), FB (feedback), EN (enable), BST/BOOT (bootstrap for high-side gate drive), PGOOD (power-good), and SS/ISENSE (soft-start or current sense).

Manufacturer

Manufacturer: ROHM Semiconductor (ROHM Co., Ltd.).
What kind of company: ROHM is a Japanese multinational company that designs and manufactures semiconductors and electronic components, including power management ICs, diodes, transistors, LEDs, and other components.

Application

- Notebook and desktop CPU/GPU core voltage regulation (VRMs)
- Motherboard VRMs and GPU memory rails
- FPGA/ASIC power rails requiring multiphase, high-efficiency DC-DC conversion
- Telecom/networking equipment DC-DC power rails
- Embedded systems needing compact, efficient multi-phase regulators

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