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Dual Synchronous Buck Converter - BD93291EFJ

The BD93291EFJ is a dual synchronous buck converter.It integrates wide input voltage range (8.0V to 26V) synchronous buck converter and low input voltage (Vout1 : 5.0V) synchronous buck converter. The IC also incorporates a new technology called H3RegTM, a Rohm proprietary control method which facilitates ultra-high transient response against changes in load. SLLM (Simple Light Load Mode) technology is also integrated to improve efficiency when powering lighter loads. For protection and ease of use, the IC also incorporates soft start. Space-saving and high efficient switching regulator can be achieved due to built-in N-MOSFET power transistor in HTSOP-J8 package.

* 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
BD93291EFJ-E2 Active HTSOP-J8 2500 2500 Taping Yes
 
Specifications:
Grade Standard
ch 2
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 8.0
Vin1(Max.)[V] 26.0
Vout1(Min.)[V] 4.925
Vout1(Max.)[V] 5.075
Iout1(Max.)[A] 1.7
Vin2(Min.)[V] 5.0
Vin2(Max.)[V] 5.0
Vout2(Min.)[V] 0.8
Vout2(Max.)[V] 4.0
Iout2(Max.)[A] 0.5
SW frequency(Max.)[MHz] 2.5
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
  • ・ Dual Synchronous Buck Converter in small package.
    ・ standby mode ( Istandby = 0uA )
    ・ High Voltage Synchronous Buck Converter(Vout1)
    - Wide input range(8.0V to 26V) *absolute voltage 30V
    - H3RegTM DC/DC Converter Controller included
    - Output Current 1.7A *1
    - FET on resistance High-side 0.175Ω/Low-side 0.175Ω
    - Internal soft-start function
    - Switching Frequency 300 to 600kHz
    (*According to input/output conditions)
    - Fixed output voltage (5.0V ± 1.5%; Normal Mode)
    ・ Low Voltage Synchronous Buck Converter(Vout2)
    - Input voltage range 5.0V(VOUT1)
    - H3RegTM DC/DC Converter Controller included
    - Output Current 0.5A *1
    - FET on resistance High-side 0.25Ω/Low-side 0.25Ω
    - Internal soft-start function
    - Switching Frequency 1.5M to 2.5MHz
    (*According to input/output conditions)
    - Feedback voltage (0.8V ± 1.5%; Normal Mode)
    ・ Protection Circuits
    Under Voltage Lockout Protection
    Thermal Shutdown
    Over Current Protection
    ・ HTSOP-J8 Package with Exposed thermal PAD.
 
 
Technical Data
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