Downloading...
 
product-image
 

4.2-18V 3A 1ch Synchronous Buck converter - BD9329AEFJ-LB

This is the product guarantees long time support in Industrial market. The BD9329AEFJ-LB is a synchronous step-down switching regulator that integrates 2 low resistance N-channel MOSFETs. It achieves 3A continuous output current over a wide input supply range. Current mode operation provides fast transient response and easy phase compensation.
ROHM recommends BD9C301FJ-LB for new design.
Please refer to Buck DC/DC Converter IC Replacement Guide for more information.

FAQ 
Buy 
Sample 
Please contact us for purchase because there is no distribution Inventory.--- inquiry
Part number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9329AEFJ-LBE2 Active(Inquiry) HTSOP-J8 2500 2500 Taping Yes
 
Specifications:
Grade Industrial
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 4.2
Vin1(Max.)[V] 18.0
Vout1(Min.)[V] 0.9
Vout1(Max.)[V] 12.6
Iout1(Max.)[A] 3.0
SW frequency(Max.)[MHz] 0.38
Light Load mode No
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
  • · Long time support a product for Industrial applications.
    · Wide operating INPUT Range 4.2V to 18.0V
    · 3A Output Current
    · Hi-side / Lo-side FET ON-resistance; 0.15 / 0.13O Power Switch
    · Low ESR Output Ceramic Capacitors are Available
    · Low Standby Current during Shutdown Mode
    · 380 kHz Fixed Operating Frequency
    · Feedback voltage 0.9V ±1.5% Accuracy at room temp.
        (±2.0% guaranteed for -25? to 85? temperature range)
    · Protection Circuits
            Under Voltage Lockout Protection
            Thermal Shutdown
            Over Current Protection
    · HTSOP-J8 Package with Exposed thermal PAD.
 
 
RELATED PRODUCTS
Other New/Updated Products Relating to Power Management
PART NUMBER Product Name Package Datasheet Distribution Inventory
BD9S300MUF-C 2.7V to 5.5V Input, 3A Integrated MOSFET Single Synchronous Buck DC/DC Converter For Automotive VQFN16FV3030   inquiry
BD9E104FJ 7.0 V to 26.0 V Input, 1 A Integrated MOSFET Single Synchronous Buck DC/DC Converter SOP-J8   inquiry
BD9V101MUF-LB 16V to 60V, 1A 1ch 2.1MHz Synchronous Buck Converter Integrated FET VQFN24FV4040   Buy Sample
BD70522GUL Nano Energy™ - Ultra Low Iq Buck Converter For Low Power Applications VCSP50L1C   Buy Sample
BD9E103FJ 7V to 28V Input, 1.5A Integrated MOSFET Single Synchronous Buck DC/DC Converter SOP-J8   Buy Sample
BD9S200MUF-C 2.7V to 5.5V Input, 2A Integrated MOSFET Single Synchronous Buck DC/DC Converter For Automotive VQFN16FV3030   Buy Sample
New Products:
 
 
Technical Data
Capacitor Calculation for Buck converter IC

This application note explains the calculation of external capacitor value for buck converter IC circuit.

Inductor Calculation for Buck converter IC

This application note covers the steps required in choosing the inductor and to calculate the value used in buck regulator IC circuits.

Resistor Value Table to set Output Voltage of Buck Converter IC

This Application Note offers reference table to easily set resistor values for output voltage with various internal reference voltages VREF.

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

PCB Layout Techniques of Buck Converter

Major problems that arise from in appropriate layout may cause increase in noise superposed by output and switching signal, the deterioration of regulator, and also lack of stability...

The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

Using unmatched MLCC may not obtain required target characteristics for power supply circuit and may cause abnormal operation. This application note explains the important points while using MLCC.

Calculation of Power Loss (Synchronous)

This application note describes how to obtain the power loss required to calculate the temperature of a semiconductor device. Temperature control is important to ensuring product reliability.

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

Considerations for Power Inductors Used for Buck Converters

This application note explains the features and things to consider when shopping for power inductors.

Snubber Circuit for Buck Converter IC

In buck converter ICs, many high-frequency noises are generated at switch nodes. A snubber circuit provides one way of eliminating such harmonic noise. This application note explains how to set up the RC snubber circuits.

Efficiency of Buck Converter

This application note explains power loss factors and methods for calculating them. It also explains how the relative importance of power loss factors depends on the specifications of the switching power source.

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.