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ROHM BU6655NUX Data Handbook/Specifications User Guide

Summary

These advanced 3-channel CMOS LDO regulators provide highly stable and efficient power solutions (up to 200mA) specifically designed for battery-powered and portable electronic equipment. Featuring exceptionally low quiescent current and integrated protection circuits, they are ideal for powering critical components like logic ICs, RF modules, and camera systems. The manual provides comprehensive technical documentation, including electrical specifications, detailed operational parameters, application guidelines, and circuit integration diagrams necessary for system designers to implement reliable multi-rail power management.

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CMOS LDO Regulators for Portable Equipments

3ch CMOS LDO Regulators

BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX No.11020EFT06

●Description BU6650NUX, BU6651NUX, BU6652NUX, BU6653NUX, BU6654NUX, BU6655NUX are high-performance 3ch FULL CMOS regulator with 200-m A outputs, which is mounted on small package VSON008X2030(2.0 mm  3.0 mm  0.6 mm). It has excellent noise characteristics and load responsiveness characteristics despite its low circuit current consumption of 120 A. It is most appropriate for various applications such as power supplies for logic IC, RF, and camera modules.

●Features 1) High-accuracy output voltage of 1% (25 m V on 1.5 V & 1.8 V products) 2) High ripple rejection: 70 d B (Typ., 1 k Hz, VOUT≦1.8 V) 3) Compatible with small ceramic capacitor (CIN=2.2F, Co=1.0 F) 4) Low current consumption: 120 A 5) ON/OFF control pin (STBY) of output voltage 6) With built-in over current protection circuit and thermal shutdown circuit 7) With built-in output discharge circuit 8) Adopting small package VSON008X2030

●Applications Battery-powered portable equipment, etc.

●Line up matrix ■ 200 m A BU665□NUX Series Product Name VOUT1 VOUT2 VOUT3 Package BU6650NUX 2.8V 2.8V 1.8V BU6651NUX 2.8V 1.8V 1.5V BU6652NUX 2.8V 2.8V 1.5V

VSON008X2030

BU6653NUX 2.8V 1.8V 1.8V BU6654NUX 3.3V 1.8V 1.5V BU6655NUX 3.3V 2.8V 1.8V

www.rohm.com 2011.09 - Rev.F 1/21 © 2011 ROHM Co., Ltd. All rights reserved.

Page Summary Contents For ROHM BU6655NUX Data Handbook/Specifications User Guide

Page 1 CMOS LDO Regulators for Portable Equipments 3ch CMOS LDO Regulators BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX No.11020EFT06 ●Description BU6650NUX, BU6651NUX, BU6652NUX, BU6653NUX, B...
Page 2 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Absolute maximum rating Parameter Symbol Ratings Unit Maximum applied power voltage VMAX -0.3 ~ +6.0 V Power dissipation Pd ...
Page 3 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Electrical characteristics (Ta=25C, VIN=VOUT+1.0 V (VIN=3.5 V on VOUT=1.8 V and1.5 V products), STBY=1.5 V, CIN=2.2 F, CO=...
Page 4 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Block diagram, recommended circuit diagram, and package dimensions (VSON008X2030) Device Mark a VOUT1 STBY1 Lot No. VOUT2 ST...
Page 5 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Input/Output terminal equivalent circuit schematic 6,7,8pin (VOUT) 5pin (GND) 2,3,4pin (STBY) 1pin (VIN) VIN Fig.3 Input / O...
Page 6 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ut pu t V ol ta ge V) nd ur re nt (u A) In pu t C ur re nt (u A) ro po ut ol ta ge (V ●Reference data total device (Ta=25ºC u...
Page 7 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ut pu t V ol ta ge (V ut pu t V ol ta ge (V ip pl je ti d B VIN=4.3V 3.33 VIN=3.8V VIN=5.5V Temp.=-40°CTemp.=25°C VIN=4.3V 3....
Page 8 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 28 Load Response Fig. 29 Load Response Fig. 30 Load Response Fig. 31 Load Response Current Pulse=10k Hz Current Pulse=10...
Page 9 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 34 Start Up Time Fig. 35 Start Up Time Fig. 36 Start Up Time (STBY=VIN) Iout = 0m A Iout = 200m A Iout = 0m A Fig. 37 St...
Page 10 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ro po ut ol ta ge (V ut pu t V ol ta ge V) ip pl je ti d B ●Reference data Vo=2.8V (Ta=25ºC unless otherwise specified.) 2.84...
Page 11 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 52 Load Response Fig. 53 Load Response Fig. 54 Load Response Fig. 55 Load Response Fig. 56 Load Response Fig. 57 Load Re...
Page 12 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 60 Start Up Time Fig. 61 Start Up Time Fig. 62 Start Up Time (STBY=VIN) Iout = 0m A Iout = 200m A Iout = 0m A Fig. 63 St...
Page 13 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ut pu t V ol ta ge (V nd ur re nt (u A) ut pu t V ol ta ge V) ut pu t V ol ta ge (V ●Reference data Vo=1.8V (Ta=25ºC unless o...
Page 14 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ip pl je ti f=0 .1k Hz Co=1.0μF 0.6 Cin=1.0μF Iout=10m A f=1 k Hz temp=25℃ f=10k Hz f=100k Hz Co=1.0μF Cin=none Vin= 3.5V Iou...
Page 15 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 87 Load Response Fig. 88 Load Response Current Pulse=100k Hz Current Pulse=100k Hz Fig. 89 Start Up Time Fig. 90 Start U...
Page 16 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ut pu t V ol ta ge (V nd ur re nt (u A) ut pu t V ol ta ge V) ●Reference data Vo=1.5V (Ta=25ºC unless otherwise specified.) 1...
Page 17 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ip pl je ti d B f=0 .1 k Hz Co=1.0μF Cin=1.0μF f=1k Hz Iout=10m A 0.5 temp=25℃ f=10k Hz f=100k Hz Co=1.0μF Cin=none Vin= 3.5V...
Page 18 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 116 Load Response Fig. 117 Load Response Current Pulse=100 k Hz Current Pulse=100 k Hz Fig. 118 Start-up Time Fig. 119 S...
Page 19 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●About power dissipation (Pd) As for power dissipation, an approximate estimate of the heat reduction characteristics and int...
Page 20 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Other notes - About absolute maximum rating Breakage may occur when absolute maximum ratings such as applied voltage and ope...
Page 21 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Ordering part number Part No. Part No. Package Packaging and forming specification 0. 6M NUX: VSON008X2030 TR: Embossed tape...
Page 22 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...

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Brand ROHM
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Published June 02, 2026
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