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Switching Regulators for DDR-SDRAM Cores

ROHM's core switching power supplies are designed to provide precise power to DDR-SDRAM cores and feature superior response characteristics and high efficiency. A wide supply voltage range (0.7V-2.5V) makes them ideal for low voltage/high current DDR-SDRAM applications. 

RoHM'SHigh Performance Regulators for PCs

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Specifications Part No. Package Features
Single Channel 0.7V-2.5V Variable Output External FET Type
BD9532EKN

HQFN20V
Single Channel 0.7V-2.5V Variable Output External FET Type
BD9533EKN

HQFN20V
Dual Channel 0.7V-2.5V Variable Output External FET Type
BD9535MUV

VQFN032V5050
Single Channel 0.7V-2.5V Variable Output External FET Type
BD95371MUV

VQFN020V4040


Block Diagram

Board
Expanded
  

Features

SLLM (PFM) control ensures efficient operation, even in suspend mode

In suspend mode nearly all blocks go into an OFF state and the current decreases significantly. DDR-SDRAM is one of the few blocks that must operate in order to preserve data. ROHM's switching power supply controllers feature SLLM (Simple Light Load Mode) control to minimize power consumption during light loads (i.e. suspend mode operation), prolonging battery life.

  
Expanded
2ch type contributes to end-product miniaturization
Enable (EN) and Soft Start (SS) terminals make sequence control easy in multiple power supply configurations
High-speed load response ensures stable DDR-SDRAM operating voltage
Operating frequency adjustable via external resistor

Product Inquiries



Switching Regulator

Part No. Input Voltage
(Vcc)
(V)		 Input Voltage
(Vin)
(V)		 Output
current
(A)		 Output
voltage
(V)		 Voltage
precision
(%)		 NRCS
(soft start)		 Thermal
shut down
 UVLO Output
over
voltage
protection		 Package RoHS Distribution
Inventory		 ROHM E-Lab.
Reset
BD9532EKN 4.5 to 5.5 4.5 to 25.0 Depend on external FET 0.7 to 2.5 ±1 Variable Recovery Yes No HQFN20V Yes -
BD9533EKN 4.5 to 5.5 4.5 to 28.0 Depend on external FET 0.7 to 2.5 ±1 Variable Recovery Yes Yes HQFN20V Yes
BD9535MUV 4.5 to 5.5 3.0 to 28.0 Depend on external FET 0.7 to 2.0 ±1 Variable Recovery Yes Yes VQFN032V5050 Yes
BD95371MUV 4.5 to 5.5 4.5 to 25.0 Depend on external FET 0.75 to 2.0 ±1 Variable Recovery Yes Yes VQFN020V4040 Yes -

 

High Performance
Regulators for PCs

2010.12.23

A new quick search function has been added for power supply ICs

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