BD3539NUX-TR Power Management ICs - PMIC by Rohm

1A Variable Output Termination Regulator for DDR-SDRAMs


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.

Where to Buy

Prices starting from US$0.42

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Features

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

Specifications

ch 1
Vin(Min.)[V] 2.7
Vin(Max.)[V] 5.5
Vout (Typ.) [V] 0.75 to 1.25
Iout(Max.)[A] 1
Circuit Current[mA] 2
Thermal Shut-down Recover
Under Voltage Lock Out Yes
Soft Start Yes
Operating Temperature (Min.)[°C] -30
Operating Temperature (Max.)[°C] 100
Package Size 2x3 (t=0.6)

Resources






Manufacturing Data
Factory Information



Alternative Descriptions

Ddr Termination Regulator, Vson-X-8 | Newark Electronics
BD3539 series, 1.0V to 5.5V, 1A, VSON008 2030 | Future Electronics
DDR/DDR2/DDR3 Termination Regulator 1A 2.7V to 5.5V 8-Pin VSON T/R | Avnet America
DDR TERMINATION REGULATOR, VSON-X-8 | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a BD3539NUX-TR?

Additional datasheets, footprints and schematics for BD3539NUX-TR are listed on our Part Details page. You can also find images and similar parts to BD3539NUX-TR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for BD3539NUX-TR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view BD3539NUX-TR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does BD3539NUX-TR fall under?

The BD3539NUX-TR is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators > DDR Termination Regulators.

Can I view similar or alternative parts?

You can view similar parts to BD3539NUX-TR when available in the DDR Termination Regulators range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the BD3539NUX-TR you can contact the distributor directly for product support, shipping queries etc.

Is the BD3539NUX-TR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ROHM Semiconductor.

Which authorised distributors for BD3539NUX-TR have stock available?

Authorised distributors including CoreStaff, Chip One Stop, Newark Electronics, Future Electronics and Avnet America have stock available or on a lead time for BD3539NUX-TR.

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