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4.5-28V 3A 1ch Synchronous Buck converter with Built-in Linear Regulator - BD95513MUV

BD95513MUV is a switching regulator capable of supplying high current output (up to 3A) at low output voltages (0.7V to 5.0V) over a broad range of input voltages (4.5V to 28V). The regulator features an internal N-MOSFET power transistor for high efficiency and low space consumption, while incorporating ROHM's proprietary H3Reg™ control mode technology, yielding the industry's fastest transient response time against load changes. SLLM (Simple Light Load Mode) technology is also integrated to improve efficiency when powering lighter loads, as well as soft start, variable frequency, short-circuit protection with timer latch, over-voltage protection, and REF functions. This regulator is suited for PC applications.

* 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
BD95513MUV-E2 Active VQFN032V5050 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] 4.5
Vin1(Max.)[V] 28.0
Vout1(Min.)[V] 0.7
Vout1(Max.)[V] 5.0
Iout1(Max.)[A] 3.0
SW frequency(Max.)[MHz] 0.6
Light Load mode Yes
EN Yes
PGOOD Yes
Operating Temperature (Min.)[°C] -10
Operating Temperature (Max.)[°C] 100
Features:
  • ・Internal low ON-resistance power N-MOSFET
    ・Internal 5V linear voltage regulator
    ・Integrated H3Reg™ DC / DC converter controller
    ・Selectable Simple Light Load Mode (SLLM),
    Quiet Light Load Mode (QLLM) and forced continuous mode
    ・Built-in thermal shutdown, low input, current overload,
    output over-and under-voltage protection circuitry
    ・Soft start function to minimize rush current during startup
    ・Adjustable switching frequency (f=200kHz to 1000 kHz)
    ・Built-in output discharge function
    ・Tracking function
    ・Internal bootstrap diode
 
 
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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.