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4.3-5.5V 3A 1ch LDO - BD3508MUV

The BD3508MUV ultra low-dropout linear chipset regulator operates from a very low input supply, and offers ideal performance in low input voltage to low output voltage applications. It incorporates a built-in N-MOSFET power transistor to minimize the input-to-output voltage differential to the ON resistance (RON MAX=100mΩ) level. By lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=3.0A) with reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier diode. Thus, the BD3508MUV is designed to enable significant package profile downsizing and cost reduction. An external resistor allows the entire range of output voltage configurations between 0.65 and 2.7V, while the NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to whatever power supply sequence is required.

* 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
BD3508MUV-E2 Active VQFN020V4040 2500 2500 Taping sim
 
especificações:
Grade Standard
Breakdown Voltage(Max.)[V] 6.0
ch 1
Vin(Min.)[V] 4.3
Vin(Max.)[V] 5.5
Vin 2ch[V] 0.75 to Vcc-1
Vout (Typ.) [V] 0.65 to 2.7
Vout Precision ±1.0
Iout(Max.)[A] 3.0
Thermal Shut-down Recover
Over Current Protection Yes
Under Voltage Lock Out Yes
Soft Start Variable
Operating Temperature (Min.)[°C] -10
Operating Temperature (Max.)[°C] 100
características:
  • ・Internal high-precision reference voltage circuit (0.65V±1%)
    ・Built-in VCC under voltage lock out circuit (VCC=3.80V)
    ・NRCS (soft start) function reduces the magnitude of in-rush current
    ・Internal Nch MOSFET driver offers low ON resistance (65mΩ typ)
    ・Built-in current limit circuit (3.0A min)
    ・Built-in thermal shutdown (TSD) circuit
    ・Variable output (0.65 to 2.7V)
    ・Incorporates high-power VQFN020V4040 package : 4.0x4.0x0.9 (mm)
    ・Tracking function
 
 
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Dados técnicos
Table of resistance for output voltage setting on linear regulator Ics

This application notes provide tables for each series so that it is easy to set the resistance value for the output voltage setting from 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.

Basics of Linear Regulators

A linear regulator, also referred to as a "three-terminal regulator" or "dropper," is a power supply long known to many designers owning to its simple circuitry and ease of use...

Linear Regulator Specifications

Very important information such as maximum ratings, operating conditions and characteristic graphs are described in the table.

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Simple Test Method for Estimating the Stability of Linear Regulators

Low drop-out (LDO) regulators developed back in the age when large-capacitance multi-layer ceramic capacitors (hereinafter, MLCCs) were uncommon cause a phase delay, leading to oscillation when connected to a low-ESR capacitor like an MLCC...

Thermal Calculation for Linear Regulator

The loss in linear regulators increases as the difference between the input and output voltages increases. Since most of the loss is converted to heat, a very large amount of heat may be generated in some conditions...

Power Source ON/OFF Characteristics for Linear Regulator

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BAxxCC0 Series Circuit Using a Ceramic Output Capacitor

This application note proposes a circuit using an output ceramic capacitor that allows a stable phase compensation.

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.

Connecting LDOs in Parallel

Provides some hints on how to connect LDOs in parallel.