Downloading...
 
product-image
 

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

The BD9329AEFJ 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 for new design.
Please refer to Buck DC/DC Converter IC Replacement Guide for more information.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9329AEFJ-E2 Active(Inquiry) HTSOP-J8 2500 2500 Taping Yes
 
Specifications:
Grade Standard
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:
  • ・Wide operating INPUT Range 4.2V to 18.0V
    ・3A Output Current
    ・Hi-side / Lo-side FET ON-resistance; 0.15 / 0.13Ω 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.
 
 
Technical Data
Reference Circuits and Bomlist

Reference Circuits and Bomlist

Application Note

Capacitor Calculation for Buck converter IC

Application Note

Inductor Calculation for Buck converter IC

Application Note

Resistor Value Table to set Output Voltage of Buck Converter IC

Application Note

Thermal Resistance

Application Note

PCB Layout Techniques of Buck Converter

Application Note

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

Application Note

Calculation of Power Loss (Synchronous)

Application Note

Considerations for Power Inductors Used for Buck Converters

Application Note

Snubber Circuit for Buck Converter IC

Application Note

Efficiency of Buck Converter

Application Note

Buck DC/DC Converter Recommended Inductor List