 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 1/25 www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. led drivers for lcd backlights white backlight led driver for medium to large lcd panels (switching regulator type) bd6592muv description bd6592muv is white led driver ic with pwm step-up dc/dc c onverter that can boost max 42.5v and current driver that can drive max 40ma. the wide and precis ion brightness can be controlled by external pwm pulse. bd6592muv has very accurate current drivers, and it has few current errors between each strings. so, it will be helpful to reduce brightness spots on the lcd. small package type is suited for saving space. features 1) high efficiency pwm step-up dc/dc converter (fsw=1mhz), max efficiency 93% 2) high accuracy & good matching (3%) current drivers 6ch 3) drive up to 12 * in series, 6 strings in parallel =72 white leds ( * white led vf=3.5vmax) 4) wide input voltage range (2.7v ~ 22v) 5) rich safety functions ? over-voltage protection (ovp) ? over current limit ? external sbd open detect ? thermal shutdown 6) small & thin package (vqfn024v4040) 4.0 4.0 1.0mm applications all middle size lcd equipments backlight of notebook pc, portable dvd player, car navigation systems, etc. absolute ma ximum ratings (ta=25 ) parameter symbol ratings unit condition maximum applied voltage 1 vmax1 7 v test, vreg, sensp, sensn, sw, rstb, pwmpow, pwmdrv, failsel, iseth, isetl maximum applied voltage 2 vmax2 25 v led1, led2, led3, led4, led5, led6, vbat maximum applied voltage 3 vmax3 50.5 v vdet power dissipation 1 pd1 500 mw *1 power dissipation 2 pd2 780 mw *2 power dissipation 3 pd3 1510 mw *3 operating temperature range topr -30 ~ +85 storage temperature range tstg -55 ~ +150 *1 reduced 4.0mw/ with ta>25 when not mounted on a heat radiation board. *2 1 layer (rohm standard board) has been mounted. copper foil area 0mm 2 , when it?s used by more than ta=25 , it?s reduced by 6.2mw/ . *3 4 layer (jedec compliant board) has been mounted. copper foil area 1layer 6.28mm 2 , copper foil area 2~4layers 5655.04mm 2 , when it?s used by more than ta=25 , it?s reduced by 12.1mw/ . recommended operating range (ta=-30 ~ +85 ) parameter symbol ratings unit condition min. typ. max. power supply voltage vbat 2.7 12.0 22.0 v no.11040ect33
technical note 2/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? technical note 3/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? technical note 4/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. vout ic c -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0% 20% 40% 60% 80% 100% pwm hi duty curr ent matching ( %) min matching = min led current/average current max matching = max led current/average current -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0% 2% 4% 6% 8% 10% pwm hi duty curr ent matching ( %) max matching = max led current/average current min matching = min led current/average current vbat vout led curren t 400 ? technical note 5/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? current sence s q r - + - + over voltage protect sbd open protect vin detector ? ? ? ? ? ? ? technical note 6/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? 10 ? ? 10 ? ? 10 ? ? 10 ? ? technical note 7/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? ? technical note 8/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. 4) external sbd open detect and over voltage protection bd6592muv has over boost protection by external sbd open and over voltage protection. it detects vdet voltage and is stopped output tr in abnormal condition. details are as shown below. ? ? ? ? ? ? ? technical note 9/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. (example 1) in case of, vin=6.5v, l=4.7h, fsw=1m hz, vout=39v, iout=80ma, efficiency=85% ipeak = (6.5v / 4.7h) (1 / 1mhz) (1-(6.5v / 39v)) =1.08a iave = (39v 80ma / 6.0v) / 85% = 0.61a ton = (0.61a (1-6.0v / 39v) (1 / 1mhz) ( 4.7h /6.0v) 2) 1/2 = 0.90s (1-vin/vout) (1 /fsw)=0.85s < ton peak current = 1.08a/2+0.61a = 1.15a (example 2) in case of, vin=12.0v, l=4.7h, fsw=1mhz, vout=39v, iout=80ma, efficiency=85% ipeak = (12.0v / 4.7h) (1 / 1mhz) (1-(12v / 39v)) =1.77a iave = (39v x 80ma / 12.0v) / 85% = 0.31a ton = (0.31a (1-12 v / 39v) (1 / 1mhz) ( 4.7h /12 v) 2) 1/2 = 0.41s (1-vin/vout) (1 /fsw)=0.69s > ton peak current = 12v/4.7h 0.41s = 1.05a when too large current is set, output oversh oot is caused, be careful enough because it is led to break down of the ic in case of the worst. ? ? rst b dc/dc vout 3 vr eg pwmdrv pwmpow 5v min. 100s 2 5v 2.7v 1 vbat technical note 10/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? technical note 11/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? technical note 12/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? o f technical note 13/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. pw mdrv led current coil current ic?s active current on off on off on off on ? ? ? ? technical note 14/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? ? ? ? ? 10 ? ? technical note 15/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. led6 led5 led4 led3 led2 gnd test gnd vdet n.c. sw sensp vbat pwmpo w vreg rstb gnd failsel sensn gnd iseth isetl pwmdrv led1 pwm reset c bat l c in to power suppl y tr sbd r sense c out to cathode of led c reg riset to anode of each led to gnd technical note 16/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. technical note 17/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? technical note 18/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? 10 ? ? 8led x 6parallel each 40ma can be set up to each15~40ma 10 ? ? 8led x 6parallel each 40ma can be set up to each15~40ma 10 ? ? technical note 19/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? 7led x 6parallel each 30ma can be set up to each15~40ma 10 ? ? 10led x 4parallel each 40ma can be set up to each15~40ma 10 ? ? 8led x 3parallel each 40ma can be set up to each15~40ma 10 ? ? 6led x 4parallel each 40ma can be set up to each15~40ma 10 ? ? technical note 20/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? 4led x 6parallel each 40ma can be set up to each15~40ma 10 ? ? 8led x 3parallel each 80ma can be set up to each30~80ma 10 ? ? 8led x 2parallel each 40ma can be set up to each15~40ma 10 ? ? 8led x 2parallel each 80ma can be set up to each30~80ma 10 ? ? technical note 21/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? 4led x 4parallel each 40ma can be set up to each30~80ma 10 ? ? 8led x 2parallel each 120ma can be set up to each45~120ma 10 ? ? 3led x 5parallel each 40ma can be set up to each15~40ma 10 ? ? technical note 22/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? 8led x 6parallel each 40ma can be set up to each15~40ma 10 ? ? can be set up to each90~240ma 10 ? ? 10led x 6parallel each 40ma can be set up to each15~40ma coil power supply 6~30v ic power supply 10 ? ? technical note 23/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. 10 ? ? ? ? ? ? ? technical note 24/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. technical note 25/25 bd6592muv www.rohm.com 2011.06 - rev.c ? 2011 rohm co., ltd. all rights reserved. (unit : mm) vqfn024v4040 0.08 s s 16 7 12 19 24 13 18 0.40.1 0.02 +0.03 - 0.02 1pin mark 2.40.1 c0.2 0.5 4.00.1 0.75 2.40.1 4.00.1 1.0max (0.22) 0.25 +0.05 - 0.04 ? order quantity needs to be multiple of the minimum quantity. r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redundancy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. |
Price & Availability of BD6592MUV-E2
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |