Details, datasheet, quote on part number: BD9B331GWZ-E2
PartBD9B331GWZ-E2
CategorySemiconductors => Power Management ICs => Voltage Regulators - Switching Regulators => 8827402
TitleVoltage Regulators - Switching Regulators 3A Buck Cnv 0.6-3.3V Auto PFM/PWM Adjst
Description

ROHM Semiconductor BD9B331GWZ Buck DC/DC Converter is a single synchronous step-down converter designed to produce a low voltage output of 0.6V to 3.3V from a 2.7V to 5.5V power supply line. BD9B331GWZ offers high efficiency in all load ranges by automatic PFM/PWM adjustment. This device employs an On time control system to provide faster transient response to sudden change in load.

CompanyROHM Electronics
DatasheetDownload BD9B331GWZ-E2 datasheet
Specifications 
Product CategoryVoltage Regulators - Switching Regulators
ManufacturerROHM Semiconductor
Mounting StyleSMD/SMT
Package/CaseUCSP30L1
Output Voltage600 mV to 3.3 V
Output Current3 A
Number of Outputs1 Output
Input Voltage MAX5.5 V
TopologyBuck
Input Voltage MIN2.7 V
Switching Frequency1.3 MHz
Maximum Operating Temperature+ 85 C
PackagingReel
BrandROHM Semiconductor
Input Voltage2.7 V to 5.5 V
Minimum Operating Temperature- 40 C
Operating Supply Current150 uA
Operating Temperature Range- 40 C to + 85 C
ShutdownShutdown
Factory Pack Quantity3000
Supply Voltage - Min2.7 V
TypeSynchronous Buck Converter
BD9B331GWZ-E2 photo

 

Features, Applications
to 5.5V Input ,3A Integrated MOSFET Single Synchronous Buck DC/DC Converter

ROHM's high efficiency switching regulator, is a step-down converter designed to produce a low voltage output of 0.6V~3.3V from a 2.7V~5.5V power supply line. It offers high efficiency in all load ranges by automatic PFM/PWM adjustment. It employs an On time control system to provide faster transient response to sudden change in load.

Input Voltage Range: to 5.5V Output Voltage Range: to PVCC0.8V Output Current: 3.0A (Max) Switching Frequency: 1.3MHz(Typ) High Side FET ON Resistance: 23m(Typ) Low Side FET ON Resistance: 23m(Typ) Standby Current: 0A (Typ) Operating Temperature Range: to +85C W(Typ) x D(Typ) x H(Max) x 0.33mm

Features

Fast transient response with On time control system. High efficiency for all load range with synchronous rectifier (Nch/Nch FET) and adaptive PFM/PWM system. Adjustable Soft-start function. Thermal and UVLO protection. Short-circuit current protection with pulse count Shutdown function.

Applications

Power supply for LSI including SoC, DSP, Micro computer and ASIC Laptop PC / Tablet PC / Server LCD TV, Storage Devices (HDD / SSD) Printer Amusement Secondary power supply.

Product structure : Silicon monolithic integrated circuit. www.rohm.com 2015 ROHM Co., Ltd. All rights reserved. 14 001 This product has no designed protection against radioactive rays

Pin B3 B4 Symbol FB AGND PGND PGD RES SW Function Output feedback pin Ground pin Power ground pin Power ground pin Power good open drain pin Reserved pin (Connect to Ground) Switch pin Switch pin Pin D3 D4 Symbol SS SW AVCC BST PVCC Function Enable pinHigh active Soft start capacitor connection pin Switch pin Switch pin Power supply input pin Bootstrap pin Power supply input pin Power supply input pin

www.rohm.com 2015 ROHM Co., Ltd. All rights reserved. 15 001

Parameter AVCC / PVCC Voltage EN Voltage BST Voltage BST_SW Voltage SW Voltage SS/FB/PGD/ Voltage Power Dissipation Operating temperature range Storage temperature range Maximum junction temperature Symbol AVCC / PVCC VEN VBST VBST-SW Vsw VSS/ VFB VPGD Pd Topr Tstg Tjmax Rating to +7 (Note to +7

(Note 1) Pd,and Tj=150C should not be exceeded. (Note 2) Derate by 6.5mW/C when operating above Ta=25C. When mounted on a board 63mm55mm1.6mm glass-epoxy board, 9 layer.(Refer page.16 )

Parameter Power Supply Voltage EN Voltage Output voltage Range SW average output current
www.rohm.com 2015 ROHM Co., Ltd. All rights reserved. 15 001

 

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