Product Information

BD9109FVMEVK-101

BD9109FVMEVK-101 electronic component of ROHM

Datasheet
ROHM Semiconductor Power Management IC Development Tools BD9109FVM Eval Mod
Manufacturer: ROHM
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



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Manufacturer
Product Category
RoHS - XON
Icon ROHS
Product
Type
Tool Is For Evaluation Of
Input Voltage
Output Voltage
Description/Function
Output Current
Packaging
Brand
For Use With
Cnhts
Hts Code
Mxhts
Product Type
Factory Pack Quantity :
Subcategory
Taric
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Additional Infomation About Product

ROHM Switching Regulator Solutions Evaluation Board: Synchronous Buck Converter Integrated FET No.000000000 BD9109FVMEVK-101 (3.3V 0.8A Output) Introduction This application note will provide the steps necessary to operate and evaluate ROHMs synchronous buck DC/DC converter using the BD9109FVM evaluation boards. Component selection, board layout recommendations, operation procedures and application data is provided. Description This evaluation board has been developed for ROHMs synchronous buck DC/DC converter customers evaluating BD9109FVM. While accepting a power supply of 4.5-5.5V, an output of 3.3V can be produced. The IC has internal 350mohm Pch MOSFET and 250mohm Nch MOSFET and a fixed synchronization frequency of 1 MHz. A Soft Start circuit prevents in-rush current during startup along with UVLO (low voltage error prevention circuit) and TSD (thermal shutdown detection) protection circuits. An EN pin allows for simple ON/OFF control of the IC to reduce standby current consumption. Employs a current mode control system to provide faster transient response to sudden change in load. Applications Power supply for LSI including DSP, Microcomputer and ASIC Evaluation Board Operating Limits and Absolute Maximum Ratings Limit Parameter Symbol Unit Conditions MIN TYP MAX Supply Voltage BD9109FVM V 4.5 5 5.5 V CC Output Voltage / Current V 3.234 3.300 3.366 V OUT BD9109FVM I - - 0.8 A OUT Evaluation Board Below is evaluation board with the BD9109FVM. EN Vout GND BD9673EFJ Eval Board Fig 1: BD9109FVM Evaluation Board 1 Applic ation Note Evaluation Board Schematic Below is evaluation board schematic for BD9109FVM. Fig 2: BD9109FVM Evaluation Board Schematic Evaluation Board I/O Below is reference application circuit that shows the inputs (V , EN) and the output (V ). IN OUT Fig 3: BD9109FVM Evaluation Board I/O Evaluation Board Operation Procedures Below is the procedure to operate the evaluation board. 1. Connect power supplys GND terminal to GND test point TP4 on the evaluation board. 2. Connect power supplys V terminal to V test point TP3 on the evaluation board. This will provide V to the IC U1. Please CC IN IN note that the V should be in range of 4.5V to 5.5V. CC 3. Check if shunt jumper of J1 is at position ON (Pin2 connect to Pin3, EN pin of IC U1 is pulled high as default). 4. Now the output voltage V (+3.3V) can be measured at the test point TP1 on the evaluation board with a load attached. The OUT load can be increased up to 0.8A MAX. Page 2 of 8

HS Compliance

Tariff Desc

8543.70.00 Other machines and apparatus Free
13 Signal processors (graphic equalisers, crossovers etc.) 91 Other Free

9027.10.00 Instruments and apparatus for physical or chemical analysis (eg, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes Free

9031.80.00 MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER; PROFILE PROJECTORS Other instruments, appliances and machines Free

9030.31.00 Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, x-ray, cosmic or other ionising radiations.
Other instruments and apparatus, for measuring or checking voltage, current, resistance or power Multimeters without a recording device Free

8473.30.00 Parts and accessories of the machines of 8471 AUTOMATIC DATA PROCESSING MACHINES AND UNITS THEREOF; MAGNETIC OR OPTICAL READERS, MACHINES FOR TRANSCRIBING DATA ONTO DATA MEDIA IN CODED FORM AND MACHINES FOR PROCESSING SUCH DATA, NOT ELSEWHERE SPECIFIED OR INCLUDED:
.Other 71 No Weighing less than 1kg Free

8537 BOARDS, PANELS, CONSOLES, DESKS, CABINETS AND OTHER BASES, EQUIPPED WITH TWO OR MORE APPARATUS OF 8535 OR 8536, FOR ELECTRIC CONTROL OR THE DISTRIBUTION OF ELECTRICITY, INCLUDING THOSE INCORPORATING INSTRUMENTS OR APPARATUS OF CHAPTER 90, AND NUMERICAL CONTROL APPARATUS, OTHER THAN SWITCHING APPARATUS OF 8517:
8538 PARTS SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH THE APPARATUS OF 8535, 8536 OR 8537:
8538.10.10 22 For programmable controllers Free

ROHM may also be referenced as

LAPIS Semiconductor
RHE
RHM
ROHM Semicon
ROHM Semiconductor

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