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reference designBD9B207NF

ROHM BD9B207NF

2.7 V to 5.5 V Input, 2.0 A Integrated MOSFET Single Synchronous Buck DC/DC Converter

Overview

TopologyBuck Converter
Input voltage2.7-5.5 V
Output 14 V / 2 A
IC revision001

Description

BD9B207NF-Z is one of the BD9Bx07NF-Z series of single synchronous buck DC/DC converter with built-in low on-resistance power MOSFETs. It can provide current up to 2 A. The output voltage can achieve a high accuracy due to ±1 % reference voltage. It features fast transient response due to constant on-time control system. The Forced PWM Mode control reduces the output voltage ripple in the whole load range. Power Good function makes it possible for system to control sequence. It achieves the high-power density and offer a small footprint on the PCB by employing 6 pins 1.5 mm x 1.5 mm small package.

Features

  • Single Synchronous Buck DC/DC Converter
  • Constant On-time Control
  • Forced PWM Mode Control
  • ±1 % Reference Voltage Accuracy
  • 100 % Duty Cycle
  • Power Good Output
  • Output Discharge Function
  • Over Voltage Protection (OVP)
  • Over Current Protection (OCP)
  • Short Circuit Protection (SCP)
  • Thermal Shutdown Protection (TSD)
  • Under Voltage Lockout Protection (UVLO)

Typical applications

  • Step-down Power Supply for SoC, FPGA, and Microprocessor, Distributed Power Supply, Secondary Power Supply
  • Printer, OA Equipment, Laptop PC / Tablet PC / Server, Storage Device (HDD / SSD)

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)
IR(A)
ISAT(A)
RDC typ.(mΩ)
VOP(V)
Mount
SamplesAvailability & Sample
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744383210047
SPECWE-MAPI SMT Power Inductor, 0.47 µH, 3.25 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current3.25 A
Saturation Current @ 10%2.55 A
Saturation Current @ 30%4.65 A
DC Resistance95 mΩ
Self Resonant Frequency165 MHz
Rated Current2.2 A
Saturation Current3.7 A
DC Resistance76 mΩ
Operating Voltage80 V
MountSMT 
–Check availability
744383220047
SPECWE-MAPI SMT Power Inductor, 0.47 µH, 3.35 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current3.35 A
Saturation Current @ 10%2.85 A
Saturation Current @ 30%5.65 A
DC Resistance87 mΩ
Self Resonant Frequency160 MHz
Rated Current2.25 A
Saturation Current4.4 A
DC Resistance70 mΩ
Operating Voltage80 V
MountSMT 
–Check availability
744383230047
SPECWE-MAPI SMT Power Inductor, 0.47 µH, 4.8 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current4.8 A
Saturation Current @ 10%3.6 A
Saturation Current @ 30%6.9 A
DC Resistance48 mΩ
Self Resonant Frequency170 MHz
Rated Current3.2 A
Saturation Current5.5 A
DC Resistance37 mΩ
Operating Voltage80 V
MountSMT 
–Check availability
744383240047
SPECWE-MAPI SMT Power Inductor, 0.47 µH, 5.35 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current5.35 A
Saturation Current @ 10%4.15 A
Saturation Current @ 30%8 A
DC Resistance40 mΩ
Self Resonant Frequency145 MHz
Rated Current3.4 A
Saturation Current6.25 A
DC Resistance30 mΩ
Operating Voltage80 V
MountSMT 
–Check availability
74479287147
SPECWE-PMCI Power Molded Chip Inductor, 0.47 µH, 5.75 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
Inductance0.47 µH
Performance Rated Current5.75 A
Saturation Current @ 10%3.6 A
Saturation Current @ 30%7.4 A
DC Resistance29 mΩ
Self Resonant Frequency150 MHz
Rated Current7.35 A
Saturation Current5 A
DC Resistance25 mΩ
–
MountSMT 
–Check availability
74479288147
SPECWE-PMCI Power Molded Chip Inductor, 0.47 µH, 6.8 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
Inductance0.47 µH
Performance Rated Current6.8 A
Saturation Current @ 10%3.75 A
Saturation Current @ 30%7.9 A
DC Resistance22 mΩ
Self Resonant Frequency140 MHz
Rated Current6.8 A
Saturation Current6 A
DC Resistance18 mΩ
–
MountSMT 
–Check availability
744050240047
SPECWE-LQSH SMT High Saturation Power Inductor, 0.47 µH, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LQSH SMT High Saturation Power Inductor
Inductance0.47 µH
–
–
–
DC Resistance35 mΩ
Self Resonant Frequency129 MHz
Rated Current2.9 A
Saturation Current5.6 A
DC Resistance29 mΩ
–
MountSMT 
–Check availability