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2.55-5.5V 0.4A/0.3A 2ch Buck converter - BD91501MUV

ROHM's high efficiency dual step-down switching regulator BD91501MUV is a 2ch output power supply designed to produce a low voltage including 2.55V/0.4A and 1.8V/0.3A from 3.3V 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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
número de peça
Estado de Condição
pacote
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
RoHS
BD91501MUV-GE2 Active VQFN016V3030 3000 3000 Taping sim
 
especificações:
Grade Standard
ch 2
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 2.55
Vin1(Max.)[V] 5.5
Vout1(Min.)[V] 1.8
Vout1(Max.)[V] 2.55
Iout1(Max.)[A] 0.4
Vin2(Min.)[V] 2.55
Vin2(Max.)[V] 5.5
Vout2(Min.)[V] 1.8
Vout2(Max.)[V] 1.8
Iout2(Max.)[A] 0.3
SW frequency(Max.)[MHz] 1.65
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -30
Operating Temperature (Max.)[°C] 105
características:
  • ・Offers fast transient response with current mode PWM control system.
    ・Offers highly efficiency for all load range with
        synchronous rectifier (Pch/Nch FET) and SLLM™ (Simple Light Load Mode)
    ・2ch output power supply (2.55V, 1.8V)
    ・2ch output ON/OFF individual control
    ・Full 100% Duty function
    ・Incorporates soft start function
    ・Incorporates thermal protection and UVLO function
    ・Incorporates short-current protection with timer latch
    ・Incorporates shutdown function Icc=0μA (Typ.)
    ・Employs small surface mount package: VQFN016V3030
    ・Halogen free
 
 
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New Products:
 
 
Dados técnicos
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.