 |
|
| 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: |
| 1/4 Structure Product Name Type Features Silicon Monolithic Integrated Circuit Step-up DC/DC converter for medium size LCD panel BD6586MUV High efficiency PWM step-up DC/DC converter (fsw=1MHz) High accuracy and good matching current driver 4ch Drive up to 6 in series x 4 strings in parallel =24white LEDs (*white LED Vf=4.0Vmax) o Absolute maximum ratings (Ta=25 C) Parameter Symbol Limits 7 25 30.5 50.5 500 780 1510 -40 ~ +85 -55 ~ +150 Unit V V V V mW mW mW o o Condition VBAT, EN1, EN2, TRSW, PWM, TESTO, ISET, TEST LED1, LED2, LED3, LED4, SW VDET *1 *2 *3 - Maximum applied voltage 1 Maximum applied voltage 2 Maximum applied voltage 3 Maximum applied voltage 4 Power dissipation 1 Power dissipation 2 Power dissipation 3 Operating temperature range Storage temperature range o o VMAX1 VMAX2 VMAX3 VMAX4 Pd1 Pd2 Pd3 Topr Tstg C C (*1) It will be reduced every 4.0mW/ C (Ta>25 C) when it's not mounted on a heat radiation Board. (*2) it will be reduced every 6.2mW/oC (Ta>25oC) when It's not mounted on 1 layer board (ROHM Standard board) and Copper foil area 0mm2 (*3) It will be reduced every 12.1mW/oC (Ta>25oC) when it's mounted on 4 layer board (JEDEC Compliant board) and Copper foil area 6.28mm2 on 1st layer and Copper foil area 5655.04mm2. 2nd-4th layer. Operating conditions (Ta=-40 to +85oC) Parameter Supply voltage Symbol VBAT Min. Rating Typ. 2.7 ~ 5.5 Max. Unit V Condition This product isn't designed to protect itself against radioactive rays. Status of this document The English version of this document is the formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document, formal version takes priority. Application example ROHM cannot provide adequate confirmation of patents. The product described in this specification is designed to be used with ordinary electronic equipment or devices (such as audio-visual equipment, office-automation equipment, communications devices, electrical appliances, and electronic toys). Should you intend to use this product with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. ROHM assumes no responsibility for use of any circuits described herein, conveys no license under any patent or other right, and makes no representations that the circuits are free from patent infringement. Rev.A 2/4 Electrical Characteristics o (Unless otherwise noted, VBAT=3.6V, Ta = +25 C) Parameter EN1, EN2, PWM Pin Low Input Voltage range High Input Voltage range Input current UVLO Under Voltage Lock Out Switching Regulator Quiescent Current Current Consumption LED Control voltage Over Current Limit SBD Open Protect Switching frequency Duty cycle limit Over Voltage Limit SW Transistor On Resistance Current driver LED maximum current LED current accuracy LED current matching ISET voltage LED current limiter LED Terminal Over Voltage Protect Symbol Min. 0 1.4 2.05 0.4 1.1 0.7 91 25.0 0.5 35 10.0 Spec Typ. 8.3 2.35 0.1 2.2 0.5 1.5 1.0 95 25.5 0.24 0.6 60 11.5 Max. 0.4 5.5 16.0 2.65 2.0 4.6 0.6 2.5 0.1 1.3 99 26.0 0.32 25 5 3 0.7 90 13.0 Unit Condition VthL VthH Iin UVLO Iq Idd VLED Ocp Sop fSW Duty Ovl RSW ILMAX ILACCU ILMAT Iset ILOCP LEDOVP V V A V A mA V A V MHz % V mA % % V mA V ISET resistance 4.7k LED1- 4 =0.5V EN1=EN2=PWM=2.5V ILED=20mA Each LED current/Average (LED1- 4 current) ILED=20mA LED1-4=0.3V LED1-4=0.3V Isw=100mA *1 Detect voltage of VDET pin Input voltage=2.5V VBAT falling edge EN1=EN2=PWM=0V VDET=0V,ISET=24k *1. This parameter is tested with dc measurement Rev.A 3/4 Package outline drawing Type Terminals PIN 1 2 D6586 3 4 5 6 LOT No. 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 (VQFN024V4040) (Unit : mm) 22 23 24 PIN Name VBAT EN1 EN2 GND PWM ISET GND LED1 LED2 GND LED3 LED4 TEST TESTO N.C. SW SW SW VDET N.C. PGND PGND N.C. TRSW Block diagram VBAT EN1 EN2 SBD OPEN/ Output short PROTECT TSD UVLO Output Over Voltage PROTECT + Reference VDET TRSW SW SW SW Pulse Control Soft start PWM COMP + LED TERMINAL OPEN/SHORT DETECTOR ERRAMP + LED RETURN SELECT LED1 LED2 LED3 LED4 OSC Current SENCE + 4ch PGND PGND ISET Resistor driver + - Current Driver N.C. GND TEST TESTO N.C. N.C. PWM ISET GND GND Rev.A 4/4 Cautions on use (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. (2) Power supply and GND line Design PCB pattern to provide low impedance for the wiring between the power supply and the GND lines. Pay attention to the interference by common impedance of layout pattern when there are plural power supplies and GND lines. Especially, when there are GND pattern for small signal and GND pattern for large current included the external circuits, please separate each GND pattern. Furthermore, for all power supply terminals to ICs, mount a capacitor between the power supply and the GND terminal. At the same time, in order to use a capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. (3) GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient. (4) Short circuit between terminals and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the ICs can break down. (5) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. (6) Input terminals In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to handle the input terminals, such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. And, as the unused input terminals may make unstable state occur in the internal circuit, please connect them to I/O GND. (7) External capacitor In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc. (8) Thermal shutdown circuit (TSD) When junction temperatures become 175C (typ) or higher, the thermal shutdown circuit operates and turns a switch OFF. The thermal shutdown circuit, which is aimed at isolating the LSI from thermal runaway as much as possible, is not aimed at the protection or guarantee of the LSI. Therefore, do not continuously use the LSI with this circuit operating or use the LSI assuming its operation. (9) Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. (10) DC/DC converter Please select the low DCR inductors to decrease power loss for DC/DC converter. Rev.A Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM Customer Support System www.rohm.com Copyright (c) 2008 ROHM CO.,LTD. THE AMERICAS / EUROPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0 |
Price & Availability of BD6586MUV
 |
|
|
|
|
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] |