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4.5-5.5V 0.8A 1ch Buck Converter - BD9109FVM-LB

This is the product guarantees long life cycle in Industrial market.
ROHM’s high efficiency step-down switching regulator BD9109FVM-LB is a power supply designed to produce a low voltage including 3.3 volts from 5 volts power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load.
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Part number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9109FVM-LBTR Active MSOP8 3000 3000 Taping Yes
 
Specifications:
Grade Industrial
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 4.5
Vin1(Max.)[V] 5.5
Vout1(Min.)[V] 3.3
Vout1(Max.)[V] 3.3
Iout1(Max.)[A] 0.8
SW frequency(Max.)[MHz] 1.0
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -25
Operating Temperature (Max.)[°C] 85
Features:
  • ・Long Life Cycle Product for Industrial Applications.
    ・Fast Transient Response with Current Mode PWM Control System.
    ・Highly Efficiency with Synchronous Rectifier (Nch/Pch FET) and SLLMTM (Simple Light Load Mode)
    ・Soft-Start Function.
    ・Thermal Protection and ULVO Functions.
    ・Short-Current Protection Circuit with Time Delay Function.
    ・Shutdown Function
 
 
Pin Configuration:
Pin Configration
 
 
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

Buck DC/DC Converter Recommended Inductor List