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Termination Regulator for DDR-SDRAMs - BD3538HFN

BD3538HFN is a termination regulator that complies with JEDEC requirements for DDR-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 requirements of 3.3V to 5.0V 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, BD3538 has a reference power supply output (VREF) for DDR-SDRAM or a memory controller. 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.
Part Number | BD3538HFN-TR
Status | Active
Package | HSON8
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

ch

1

Vin(Min.)[V]

2.7

Vin(Max.)[V]

5.5

Vin 2ch[V]

1.0 to 5.5

Iout(Max.)[A]

1.0

Circuit Current[mA]

2.0

Thermal Shut-down

Yes

Under Voltage Lock Out

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Features:

  • Incorporates a push-pull power supply for termination (VTT)
  • Incorporates a reference voltage circuit (VREF)
  • Incorporates an enabler
  • Incorporates an undervoltage lockout (UVLO)
  • Incorporates a thermal shutdown protector (TSD)
  • Compatible with Dual Channel (DDR-II)