BD9870FPS-E2

$1.57

Description：IC REG BUCK ADJ 1.5A TO252S-5
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:b121c4f7fc6e Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 1.5A TO252S-5
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：8V
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：1V
Voltage - Output (Max)：35V
Current - Output：1.5A
Frequency - Switching：900kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
Supplier Device Package：TO-252S-5
Grade：-
Qualification：-

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BD9870FPS-E2

Overview

The BD9870FPS-E2 is a synchronous buck switching regulator IC manufactured by Rohm Semiconductor, designed for efficient DC-DC conversion in compact power systems. It operates with an input voltage range of 8V to 35V and provides a single adjustable output from 1V to 35V. The device delivers a continuous output current of 1.5A and supports a fixed switching frequency of 900kHz. Packaged in a TO-252S-5 surface-mount format, it functions within an ambient temperature range of -40°C to 85°C.

Feature Summary

Integrates high-side and low-side MOSFETs for synchronous rectification to maximize efficiency.
Features internal compensation to minimize external component count and simplify design.
Includes comprehensive protection mechanisms such as over-current, thermal shutdown, and under-voltage lockout.

Applications

Portable electronic devices requiring efficient step-down regulation
Industrial control systems with moderate power demands
Communication equipment power supplies

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm RoHS compliance and lead-free status. Ensure the TO-252S-5 package variant matches your PCB footprint requirements. Confirm availability through authorized distributors to avoid counterfeit components. Check for any recent lifecycle changes or obsolescence notices directly from Rohm Semiconductor before finalizing procurement plans.

Selection Notes

Select this component when a single-output buck converter with 1.5A capacity is required. It is suitable for applications needing an input voltage up to 35V and an adjustable output down to 1V. Consider the TO-252S-5 package for its thermal performance and space efficiency compared to smaller packages. Evaluate the 900kHz switching frequency against electromagnetic interference constraints and inductor size requirements.

Part Context

This part belongs to the BD9870 family of synchronous buck regulators from Rohm Semiconductor. These ICs are engineered for general-purpose power management in consumer and industrial electronics. The BD9870 series emphasizes high efficiency and ease of implementation through integrated power stages and minimal external passive requirements.

Replacement Considerations

Consult official substitution guides for compatible parts within the BD9870 series or other Rohm synchronous buck regulators with similar electrical specifications and pinouts.