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Termination Regulator for DDR-SDRAMs - BD3539NUX

BD3539NUX is a termination regulator that complies with JEDEC requirements for DDR1-SDRAM, DDR2-SDRAM, and DDR3-SDRAM. This linear power supply uses a built-in N-channel MOSFET and high-speed OP-AMPS specially designed to provide excellent transient response. It has a sink/source current capability of up to 1A and has a power supply bias requirement of 3.3 V (for DDR2 and DDR3) and 5.0 V (for DDR1, DDR2, and DDR3) for driving the N-channel MOSFET. By employing an independent reference voltage input (VDDQ) and a feedback pin (VTTS), this termination regulator provides excellent output voltage accuracy and load regulation as required by JEDEC standards. Additionally, BD3539 has a reference power supply output (VREF)for DDR-SDRAM or for memory controllers. Unlike the VTT output that goes to "Hi-Z" state, the VREF output is kept unchanged when EN input is changed to "Low", making this IC suitable for DDR-SDRAM under "Self Refresh" state.

* 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
BD3539NUX-TR Active VSON008X2030 4000 4000 Taping sim
 
especificações:
Grade Standard
ch 1
Vin(Min.)[V] 2.7
Vin(Max.)[V] 5.5
Vout (Typ.) [V] 0.75 to 1.25
Iout(Max.)[A] 1.0
Thermal Shut-down Recover
Under Voltage Lock Out Yes
Soft Start Yes
Operating Temperature (Min.)[°C] -30
Operating Temperature (Max.)[°C] 100
características:
  • · Incorporates a Push-Pull Power Supply for Termination (VTT)
    · Incorporates a Reference Voltage Circuit (VREF)
    · Incorporates an Enabler
    · Incorporates an Under Voltage Lockout (UVLO)
    · Incorporates a Thermal Shutdown Protector (TSD)
    · Compatible with Dual Channel (DDR1, DDR2, DDR3)
    · Usable Ceramic Capacitor at Output
 
 
Dados técnicos
Application Note

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

Application Note

Reverse Voltage Protection

Application Note

BAxxCC0 Series Circuit Using a Ceramic Output Capacitor

Application Note

Thermal Resistance

Application Note

Basics of Linear Regulators

Application Note

Linear Regulator Specifications

Application Note

Power Source ON/OFF Characteristics for Linear Regulator

Application Note

Simple Test Method for Estimating the Stability of Linear Regulators

Application Note

Thermal Calculation for Linear Regulator