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ROHM BD95514MUV Data Manual

Summary

This high-performance, integrated switching regulator is engineered for reliable power delivery in demanding digital electronics like PCs and consumer appliances. The chip efficiently supplies stable current up to 4A across a wide input range (4.5V~28V), utilizing an internal N-MOSFET structure. Key features include advanced H Reg control mode for rapid load transition, Simple Light Load Mode (SLLM) for maximum efficiency, and integrated protections like soft start and over-voltage safeguards. It is the ideal solution for manufacturing reliable mobile PCs, desktop workstations, and sophisticated household devices.

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Hi-performance Regulator IC Series for PCs

FET Integrated Switching Regulator for DDR-SDRAM Cores

BD95514MUV No.09030EBT16

●Description BD95514MUV is a switching regulator capable of supplying high current output (up to 4A) at low output voltages (0.7V~5.0V) over a broad range of input voltages (4.5V~28V). The regulator features an internal N-MOSFET power transistor for high efficiency and low space consumption, while incorporating ROHM’s proprietary H3Reg TM control mode technology, yielding the industry’s fastest transient response time against load changes. SLLM (Simple Light Load Mode) technology is also integrated to improve efficiency when powering lighter loads, as well as soft start, variable frequency, short-circuit protection with timer latch, over-voltage protection, and REF tracking functions. This regulator is suited for PC applications.

●Features 1) I Internal low ON-resistance power N-MOSFET (typ:120mΩ) 2) I Internal 5V linear voltage regulator (100m A) 3) Integrated H3Reg TM DC/DC converter controller 4) Selectable Simple Light Load Mode (SLLM), Quiet Light Load Mode (QLLM) and forced continuous mode 5) Built-in thermal shutdown, low input, current overload, output over- and under-voltage protection circuitry 6) Soft start function to minimize rush current during startup 7) Adjustable switching frequency (f = 200 k Hz ~ 1000 k Hz:It changes depending on the setup condition.) 8) Built-in output discharge function 9) VQFN032V5050 power package 10) Tracking function 11) Internal bootstrap diode

●Applications Mobile PCs, desktop PCs, LCD-TV, digital household electronics

www.rohm.com 2009.04 - Rev.B

© 2009 ROHM Co., Ltd. All rights reserved.

Page Summary Contents For ROHM BD95514MUV Data Manual

Page 1 Hi-performance Regulator IC Series for PCs FET Integrated Switching Regulator for DDR-SDRAM Cores BD95514MUV No.09030EBT16 ●Description BD95514MUV is a switching regulator capable of supplying high cu...
Page 2 BD95514MUV Technical Note ●Absolute Maximum Ratings (Ta=25°C) Parameter Symbol Value Unit Input Voltage 1 VCC 7 *1 V Input Voltage 2 VDD 7 *1 V Input Voltage 3 AVIN 30 *1 Input Voltage 4 VIN 30 *1 V E...
Page 3 BD95514MUV Technical Note ●ELECTRICAL CHARACTERISTICS (unless otherwise noted, Ta=25℃, AVIN=12V, VCC=VDD=VREG, EN/CTL=5V, MODE=0V, RFS=180kΩ) Standard Value Parameter Symbol Unit Condition MIN TYP MAX...
Page 4 BD95514MUV Technical Note ●Reference Data SLLM SLLM SLLM Continuous Mode Continuous Mode Continuous Mode Io [A] Io [A] Io [A] Fig.1 Io-Efficiency Fig.2 Io-Efficiency Fig.3 Io-Efficiency (VIN=7V,VOUT=2...
Page 5 BD95514MUV Technical Note ●Reference Data 400μsec/div VREG 2[V/div] VOUT 2[V/div] Fig.13 EN wake up ●Block Diagram VREG VIN VCC AVIN SS 13 7 VDD BOOT EN VIN(4.5~28V) UVLOVREG Soft Start VIN Reference ...
Page 6 BD95514MUV Technical Note ●Pin Configuration PGND SS SW VREG 27 SW EXTVcc SW VCC SW GND SW FS SW EN 32 PGND MODE 1 2 3 VIN VIN VIN VIN BOOT PGOOD AVIN CTL *Connect the underside (FIN) to the ground te...
Page 7 BD95514MUV Technical Note ●Pin Descriptions ・VCC This pin supplies power to the IC’s internal circuitry, excluding the FET driver. The input supply voltage range is 4.5 to 5.5 V. This pin should be by...
Page 8 BD95514MUV Technical Note ●Operation The BD95514MUV is a switching regulator incorporating ROHM’s proprietary H3Reg TM CONTROLLA control system. When VOUT drops suddenly due to changes in load, the sy...
Page 9 BD95514MUV Technical Note ●Timing Chart ・Soft Start Function The soft start function is enabled when the EN pin is set high. Current control circuitry takes effect at startup, EN yielding a moderate “...
Page 10 BD95514MUV Technical Note ●External Component Selection 1. Inductor (L) Selection The inductor’s value directly influences the output ripple current. As formula (4) indicates below, the greater the in...
Page 11 BD95514MUV Technical Note 4. Frequency Adjustment The resistance connected to the FS terminal adjusts the re qu en cy [k z] on-time (t ON) during normal operation as illustrated to From top:VIN= 5V th...
Page 12 BD95514MUV Technical Note ●Evaluation Board Circuit (Frequency=300k Hz Continuous Mode/QLLM/SLLM Example Circuit) SW VOUT GND_VIN C14 VIN PGND GND_VOUT VIN PGND VDD VIN PGND GND_VDD VIN VDD BOOT CE R7...
Page 13 BD95514MUV Technical Note ●Operation Notes (1) Absolute maximum ratings Exceeding the absolute maximum ratings (such as supply voltage, temperature range, etc.) may result in damage to the device. In ...
Page 14 BD95514MUV Technical Note ow er is si pa tio [W (11) Regarding IC input pins This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P...
Page 15 BD95514MUV Technical Note ●Ordering part number Part No. Part No. Package Packaging and forming specification MUV : VQFN032V5050 E2: Embossed tape and reel VQFN032V5050 <Tape and Reel information&g...
Page 16 Notice No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without not...

Manual Details

Brand ROHM
Pages 16
File Size 386.17 KB
Published June 16, 2026
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Frequently Asked Questions

How much current can the BD95514MUV supply?

Up to 4A output.

What light load modes does it support?

SLLM, QLLM, and forced continuous mode.

What's the maximum operating temperature?

100°C operating range.

Can this IC be used in medical equipment?

Not intended for life-critical applications like medical devices.

Does it have built-in output discharge?

Yes, built-in output discharge function.