BD8643FV-E2

$1.73

Description：IC REG BUCK ADJ 3A 20SSOP-B
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR)

SKU:f542f86bc098 Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 3A 20SSOP-B
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4.5V
Voltage - Input (Max)：18V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：18V
Current - Output：3A
Frequency - Switching：100kHz ~ 600kHz
Synchronous Rectifier：Yes
Operating Temperature：-20°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：20-LSSOP (0.173", 4.40mm Width)
Supplier Device Package：20-SSOP-B
Grade：-
Qualification：-

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BD8643FV-E2

Overview

The BD8643FV-E2 is a synchronous step-down switching regulator from ROHM Semiconductor, integrating two low-resistance N-channel MOSFETs. It provides a continuous output current of 3A with an adjustable output voltage up to 18V. The device operates within a switching frequency range of 100kHz to 600kHz and supports a minimum supply voltage of 4.5V. Designed for robust performance, it functions reliably across an operating temperature range starting from -20°C.

Feature Summary

Integrates two low-resistance N-channel MOSFETs for efficient synchronous rectification
Provides high continuous output current capability for demanding power loads
Features adjustable switching frequency to optimize design flexibility

Applications

Portable electronic devices requiring compact power solutions
Embedded systems utilizing DC-DC conversion
General-purpose power management in consumer electronics

Procurement Notes

Verify component authenticity through authorized channels as the part is listed as obsolete by major distributors. Confirm package integrity and datasheet revisions before integration. Check regional availability restrictions and ensure compliance with RoHS standards. Validate electrical parameters against specific application requirements prior to procurement.

Selection Notes

Select this component for applications requiring integrated synchronous buck regulation with high current output. Consider the fixed SSOP-B20 package constraints and thermal dissipation needs. Evaluate the 100kHz to 600kHz frequency range against EMI requirements. Ensure input voltage exceeds the 4.5V minimum threshold for stable operation.

Part Context

This part belongs to ROHM's PMIC portfolio, specifically designed as a switching regulator with integrated MOSFETs. It serves as a compact solution for DC-DC conversion in space-constrained designs. The series emphasizes efficiency and simplicity by reducing external component count.

Replacement Considerations

The part is marked as obsolete. Verify if the base model BD8643FV or other ROHM synchronous buck regulators meet functional requirements. Cross-reference pinouts and electrical specifications carefully when evaluating alternatives.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.