BD9876EFJ-E2 The BD9876EFJ-E2 is a 3A adjustable step-down (buck) switching regulator with an input voltage range of 7V to 42V and a 300kHz oscillation frequency.
Mfr Part #:

BD9876EFJ-E2

Available from 1 distributors
Mfr Name: ROHM Semiconductor
ROHM Semiconductor
The BD9876EFJ-E2 is a 3A adjustable step-down (buck) switching regulator with an input voltage range of 7V to 42V and a 300kHz oscillation frequency.
✓ Total Stock: 150 pcs
$ Price Range: $0.16

BD9876EFJ-E2 Available from 1 distributor

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✓ Non-Authorised
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150 pcs
150 pcs On Request 1 On Request On Request 13+ On Request On Request

BD9876EFJ-E2 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Supplier Device Package
Synchronous Rectifier
Topology
Voltage

BD9876EFJ-E2 Description

Short technical summary and product information.

The BD9876EFJ-E2 from ROHM Semiconductor is a current-mode PWM step-down switching regulator that delivers up to 3A of output current. It operates with an input supply voltage from 7V to 42V, making it suitable for a wide range of applications. The output voltage is adjustable from 1V up to 0.7 times VCC, with a feedback threshold voltage of 1.0V typical.

 

The regulator integrates an N-channel MOSFET with a typical on-resistance of 200mΩ and a maximum of 340mΩ. It features a fixed oscillation frequency of 300kHz typical, with a minimum of 270kHz and maximum of 330kHz. The maximum duty cycle is 97%, and a built-in soft start circuit provides a typical start-up time of 10ms to reduce inrush current.

 

Protection features include under voltage lock out (UVLO) with a typical detect voltage of 6.4V and 200mV typical hysteresis. The device also has a standby current of 0µA typical and a low circuit current of 1mA typical. It is specified for an operating temperature range of -40°C to 105°C.

 

The BD9876EFJ-E2 is available in an 8-pin HTSOP-J package, designed for surface-mount assembly. It is commonly used in industrial control, automotive electronics, and distributed power systems requiring a reliable, adjustable buck regulator.

BD9876EFJ-E2 Quick Information

Product Type: DC-DC Switching Regulator
Canonical Name: BD9876EFJ-E2
Subcategory: Switching Regulator

BD9876EFJ-E2 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BD9876EFJ-E2 Estimated Pricing

Qty Low High
1+ $0.16 $0.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

BD9876EFJ-E2 Features

  • Input voltage range from 7V to 42V.
  • Output current up to 3A.
  • 300kHz fixed oscillation frequency.
  • Built-in soft start (10ms typical).
  • UVLO with 6.4V typical threshold.

BD9876EFJ-E2 Applications

  • Ideal for industrial control system power supplies.
  • Used in automotive electronics with wide input range.
  • Suitable for distributed power supply architectures.
  • Common in consumer electronics power regulation.

BD9876EFJ-E2 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the BD9876EFJ-E2?

The input voltage range is from 7V to 42V at Ta=25°C.

What is the operating temperature range?

The operating temperature range is -40°C to 105°C.

What is the typical oscillation frequency?

The typical oscillation frequency is 300kHz.

What is the maximum output current?

The maximum output current is 3A.

What is the soft start time?

The typical soft start time is 10ms.

What is the typical UVLO detect voltage?

The typical UVLO detect voltage is 6.4V.

What is the maximum duty cycle?

The maximum duty cycle is 97% at Ta=25°C.

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