bd95500muv ROHM Co. Ltd., bd95500muv Datasheet
bd95500muv
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bd95500muv Summary of contents
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... MOSFET for DDR-SDRAM Cores BD95500MUV ●Description BD95500MUV is a switching regulator with high output current (up to 6A) which can achieve low output voltage (0.7V to 5.0V) from a wide input voltage range (3V to 20V). High efficiency for the switching regulator can be realized by utilizing an internal N-MOSFET power transistor. A new technology called H realize ultra high transient response against load change ...
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... BD95500MUV ●Maximum Absolute Ratings (Ta=25℃) Parameter Input Voltage 1 Input Voltage 2 Input Voltage 3 BOOT Voltage BOOT-SW Voltage LG Voltage REF Voltage Output Voltage ILIM/SS/FS/MODE Voltage VREG Voltage EN Input Voltage Output Current (Average) Power Dissipation 1 Power Dissipation 2 Power Dissipation 3 Power Dissipation 4 Operating Temperature Range ...
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... BD95500MUV ●Electrical characteristics (Unless otherwise noted, Ta=25℃, VCC=5V, VDD=5V MODE=5V, VIN=12V, REF=1.8V, RFS=68kΩ） Parameter [Whole Device] V Bias Current CC V Bias Current IN V Standby Current CC V Standby Current IN EN Low Voltage EN High Voltage EN Bias Current VREG Voltage [Under Voltage Locked Out ] ...
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... BD95500MUV ●Reference Data 2.500 2.498 2.496 2.494 2.492 2.490 - Ta( ℃ ) Fig VREG 2.20 Sweep up 2.15 2.10 2.05 Sweep down 2.00 1.95 1.90 - Ta( ℃ ) Fig UVLO (VREG - (℃) Fig VOUT Offset 100 SLLM ...
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... BD95500MUV ●Reference Data VOUT HG/LG IOUT Fig.13 Transient Response (V =7V) IN VOUT HG/LG IOUT Fig.16 Transient Response (V =7V) IN VOUT IL HG/LG Fig.19 SLLM Mode (I =0A) OUT IL HG/LG/SW Fig.22 Continuous Mode (Io=0A) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. VOUT HG/LG IOUT Fig.14 Transient Response (V =12V) IN VOUT HG/LG IOUT Fig.17 Transient Response ...
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... BD95500MUV ●Reference Data VIN HG/LG VOUT Fig.25 V change IN (5→19V) 1.52 Continuous 1.51 SLLM 1.50 1.49 1.48 0.001 0.01 0 Iout [A] Fig. OUT OUT ●Block Diagram VDD Vcc 5 EN VREG Reference VIN 39 Block SCP REF × 0.85 Delay SS × 0.85 Vcc V OUT REF 10 1 Power PGOOD Good SS V OUT ...
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... BD95500MUV ●Pin Configuration VIN 31 VIN 32 VIN 33 VIN 34 35 VIN VIN 36 VINS 37 BOOT MODE 40 *Connect the bottom side (FIN) to the ground terminal ●Pin Function Table PIN No. PIN name 1 PGOOD 2 N. ILIM 5 VCC 6 GND 7 VREG SS/TRACK 10 REF 11 VOUT 12 Is- 13 Is+ ...
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... The IC controls the output voltage (REF≒VOUT). ・ILIM (4 Pin) BD95500MUV detects the voltage between Is+ pin and Is- pin and limits the output current (OCP). Voltage equivalent to 1/10 of the ILIM voltage is the voltage drop of external current sense resistor. A very low current sense resistor or inductor DCR can also be used for this platform. ・ ...
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... BD95500MUV ●Explanation of Operation The BD95500MUV is a switching regulator controller incorporating ROHM’s proprietary H system. When V drops due to a rapid load change, the system quickly restores V OUT Thus, it serves to improve the regulator’s transient response. Activating the Light Load Mode will also exercise Simple Light Load Mode (SLLM) control when the load is light, to further increase efficiency ...
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... BD95500MUV ●Timing Chart ・Soft Start Function OUT I IN ・Soft Stop Function EN T SS(OFF) 1. OUT Tdelay ・Timer Latch Type Short Circuit Protection REF×0.70 V OUT 1ms SCP EN/UVLO www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Soft start is exercised with the EN pin set high. Current control takes effect at startup, enabling a moderate output voltage “ ...
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... BD95500MUV ・Output Over Voltage Protection REF×1.2 V OUT HG LG Switching ・Over current protection circuit LIMIT I L ・Synchronous operation with external power supply 3.3V (External Power Supply) 1.5 V (BD95500 Output 1) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. When output rise to or above REF×1.2, output over voltage protection is exercised, and low side FET goes up maximum for reducing output. （ ...
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... BD95500MUV ●External Component Selection 1. Inductor (L) selection ΔIL VIN VOUT PGND Output Ripple Current ※Passing a current larger than the inductor’s rated current will cause magnetic saturation in the inductor and decrease system efficiency. In selecting the inductor, be sure to allow enough margin to assure that peak current does not exceed the inductor rated current value. ※ ...
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... BD95500MUV 4. Setting Detection Resistance VIN PGND Is+ Is- Current limit VIN PGND Is+ Is- Current limit I L detect point I LIMIT 0 VIN PGND Is+ Is Current limit VOUT www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
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... BD95500MUV 5.Setting frequency 3000 VIN=5V 7V 2500 12V 16V 2000 19V 1500 1000 500 100 RFS [kΩ] 1200 1000 800 600 400 200 100 Resistance [kΩ] 6. Setting standard voltage (REF) V REF 3 H Reg CONTROLLA Outside voltage V OUT VREG V R1 REF ...
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... BD95500MUV 7. Setting output voltage This IC is operated that output voltage is REF≒V And it is operated that output voltage is feed back to FB pin in case the output voltage is 0.7V to 2.0V REF 3 H Reg CONTROLLA V OUT It is operated that the resistance division value of the output voltage is feed back to V more than 2 ...
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... BD95500MUV ●I/O Equivalent Circuit 1pin (PGOOD) 7pin (VREG) VCC 10pin (REF) VCC 13pin (Is+) VCC 37pin (VINS) 40pin (MODE) VCC www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3pin (CE) VCC 8pin (FS) VCC 11pin (VOUT) VCC 22-29pin (SW) VIN PGND 38pin (BOOT) VDD SW 16/20 Technical Note ...
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... ROHM R16 100kΩ ROHM www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. SW BD95500MUV VQFN040V6060 VREG R6 R4 ILIM R8 R9 PGOOD Part name Part No BD95500MUV R17 RB051L-40 R18 CDEP105NP-4R3MC-88 R19 - R20 MCR03 Series C1 MCR03 Series C2 MCR03 Series C3 MCR03 Series C4 1000pF MCR03 Series ...
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... IC off to prevent thermal runaway not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the environment where the operation of this circuit is assumed. BD95500MUV (10) Testing on application boards When testing the application board, connecting a capacitor to a pin with low impedance subjects the IC to stress ...
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... BD95500MUV (11) Regarding input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode or transistor. For example, the relation between each potential is as follows: ○ ...
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... BD95500MUV ●Ordering part number Part No. Part No. VQFN040V6060 6.0±0.1 1PIN MARK S 0.08 S 3.7±0.1 C0 0.75 +0.05 0.25 0.5 -0.04 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package MUV : VQFN040V6060 <Tape and Reel information> Tape Embossed carrier tape Quantity 2000pcs ...
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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 notice. The content specified herein is for the purpose ...