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BD9850FVM-TR

Description
Switching Controllers STEP DOWN SWITCHING REGULATOR
CategoryPower/power management    The power supply circuit   
File Size997KB,20 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Environmental Compliance
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BD9850FVM-TR Overview

Switching Controllers STEP DOWN SWITCHING REGULATOR

BD9850FVM-TR Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Parts packaging codeMSOP
package instructionVSSOP, TSSOP8,.16
Contacts8
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage9 V
Minimum input voltage4 V
Nominal input voltage7 V
JESD-30 codeR-PDSO-G8
length2.9 mm
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeVSSOP
Encapsulate equivalent codeTSSOP8,.16
Package shapeRECTANGULAR
Package formSMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height0.9 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency2000 kHz
Temperature levelINDUSTRIAL
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width2.8 mm
Base Number Matches1
TECHNICAL NOTE
Large Current External FET Controller Type Switching Regulators
Single-output High-frequency Step-down
Switching Regulator
(Controller type)
BD9850FVM
High temperature
operating
ESD
Resistance
Now available
Now available
Dual-output Step-up, Negative, Step-down
Switching Regulator
(Controller type)
BD9851EFV
Description
The BD9850FVM is a 1-channel DC/DC step-down switching regulator controller, while the BD9851EFV is a 2-channel DC/DC
step-down switching regulator controller. The BD9850FVM is adaptable for a maximum switching frequency of 2 MHz and the
BD9851EFV for that of 3 MHz. Both provide space saving in all applications.
Features
1) Adaptable for 2-MHz switching frequency (externally variable) (BD9850FVM)
Adaptable for 3-MHz switching frequency (externally variable) (BD9851EFV)
2) FET direct drive
3) High-accuracy reference voltage (Accuracy: ±1%)
4) Built-in Under Voltage Lock Out circuit (UVLO)
5) Built-in Thermal Shutdown circuit (TSD)
6) The BD9851EFV provides two channels:
Channel 1 available for selection of step-down/step-up switching
Channel 2 available for selection of step-down/inverting switching.
7) Compact MSOP8 package (BD9850FVM) / HTSSOP-B20 package (BD9851EFV)
Applications
TFT panel, TA/ Router, digital consumer electronics, PC, and portable CD/DVD/DVC
Product lineup
Input range
Oscillation frequency range
External synchronization
Standby function
Operating temperature
Package
BD9850FVM
4V to 9V
100kHz to 2MHz
Not provided
Not provided
–40˚C to 85˚C
MSOP8
BD9851EFV
4V to 18V
10kHz to 3MHz
Not provided
Provided
–40˚C to 85˚C
HTSSOP-B20
Sep. 2008
ROHM CO.,
LTD .
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