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Termination Regulator for DDR-SDRAMs - BD35395FJ-M

BD35395FJ-M is a termination regulator compatible with JEDEC DDR1/2/3/3L-SDRAM, which functions as a linear power supply incorporating an N-channel MOSFET and provides a sink/source current capability up to 1A respectively. A built-in high-speed OP-AMP specially designed offers an excellent transient response. Requires 3.3 volts or 5.0 volts as a bias power supply to drive the N-channel MOSFET. Has an independent reference voltage input pin (VDDQ) and an independent feedback pin (VTTS) to maintain the accuracy in voltage required by JEDEC, and offers an excellent output voltage accuracy and load regulation.

* 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
BD35395FJ-ME2 Active SOP-J8 2500 2500 Taping sim
 
especificações:
Grade Standard
ch 1
Vin(Min.)[V] 2.7
Vin(Max.)[V] 5.5
Iout(Max.)[A] 1.0
Circuit Current[mA] 0.5
Thermal Shut-down Yes
Over Current Protection Yes
Under Voltage Lock Out Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
características:
  • · Incorporates a push-pull power supply for termination (VTT).
    · Incorporates an enabler.
    · Incorporates an under voltage lockout (UVLO).
    · Employs SOP-J8 package : 4.9×6.0×1.65(mm).
    · Incorporates a thermal shutdown protector (TSD).
    · Operates with input voltage from 2.7 to 5.5 volts.
    · Compatible with Dual Channel
      (DDR1,DDR2,DDR3/DDR3L)
    · Incorporates PGOOD function.
 
 
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Dados técnicos
BD35395FJ-M PCB Layout

The PCB layout is as important as the circuit design. Major problems caused by an improper layout include inferior regulation and a lack of stability. Employing a proper layout makes it possible to prevent such problems.

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.

Reverse Voltage Protection

A linear regulator integrated circuit (IC) is a DC-to-DC buck converter system that reduces a DC supply from higher voltage level to a lower voltage level...

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

When a linear regulator IC is turned ON, the electric charge is stored in the output capacitor and the output voltage increases up to the specified value.

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.