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reference designBD9B333GWZ

ROHM BD9B333GWZ

Overview

TopologyBuck Converter
Input voltage2.7-5.5 V
Output 13 A
IC revision004

Description

BD9B333GWZ is a synchronous buck DC/DC converterwith built-in low on-resistance power MOSFETs. This IC,which is capable of providing current up to 3A, featuresfast transient response by employing constant on-timecontrol system. It offers high oscillating frequency at lowinductance. With its original constant on-time controlmethod which operates low consumption at light load,this product is ideal for equipment and devices thatdemand minimal standby power consumption.BD9B333GWZ achieves the high power density and offera small footprint on the PCB by employing small CSPpackage.

Features

 Single Synchronous Buck DC/DC Converter Constant On-time Control Suitable to Deep-SLLM Over Current Protection Short Circuit Protection Over Voltage Protection Thermal Shutdown Protection Under Voltage Lockout Protection Adjustable Soft Start Power Good Output UCSP35L1 Package (Resin Coating)

Typical applications

  • Step-down Power Supply for DSPs, FPGAs / Distributed Power Supplies, Secondary Power
  • LCD TVs
  • Laptop PCs/Tablet PCs/Servers / Storage Devices (HDDs/SSDs) / Printers, OA Equipment

More information

Parts approved by ROHM

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74479299210
SPECWE-PMCI Power Molded Chip Inductor, 1 µH, 6.2 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PMCI Power Molded Chip Inductor
Inductance1 µH
Performance Rated Current6.2 A
Saturation Current @ 10%3.25 A
Saturation Current @ 30%6.95 A
DC Resistance35 mΩ
Self Resonant Frequency60 MHz
MountSMT 
–Check availability
74437336015
SPECWE-LHMI SMT Power Inductor, 1.5 µH, 7.8 A
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance1.5 µH
Performance Rated Current7.8 A
Saturation Current @ 10%7.7 A
Saturation Current @ 30%14.2 A
DC Resistance25 mΩ
Self Resonant Frequency45 MHz
MountSMT 
–Check availability