Representative package visual — not an exact-product photographProduct referenceVendor-delivered DigiKey product/package image

Exact MPN17 sourced attributes1 source document

Rohm Semiconductor · exact orderable part

BD9851EFV-E2

Name: BD9851EFV-E2
Brand: Rohm Semiconductor

IC REG CTRLR BUCK/BST 20HTSSOP-B

Original manufacturerCommercial terms confirmed per lot

ManufacturerRohm Semiconductor

Package / case20-VSSOP (0.173", 4.40mm Width) Exposed Pad

Mounting typeSurface Mount

PackingTape & Reel (TR); Cut Tape (CT); Digi-Reel®

Technical parameters

Technical specifications

17 normalized values · 1 validated source

BD9851EFV-E2 technical parameters
Parameter	Value
Base Product Number	BD9851 [1]
Clock Sync	No [1]
Control Features	Enable, Frequency Control, Soft Start [1]
Frequency - Switching	10kHz ~ 3MHz [1]
Function	Step-Up, Step-Down [1]
Mfr	Rohm Semiconductor [1]
Mounting Type	Surface Mount [1]
Number of Outputs	2 [1]
Operating Temperature	-40°C~85°C(TA) [1]
Output Configuration	Positive or Negative [1]
Output Phases	1 [1]
Output Type	Transistor Driver [1]
Product Status	Active [1]
Synchronous Rectifier	No [1]
Topology	Buck, Boost [1]
Voltage - Supply (Vcc/Vdd)	4V ~ 18V [1]
Package / Case	20-VSSOP (0.173", 4.40mm Width) Exposed Pad [1]

Catalog relationships

This page describes one orderable part. A family page helps select suffixes but never carries assumed stock or a price.

Related exact parts

Browse exact MPNs and compare their specifications. These links do not imply compatibility or interchangeability.