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fedl9078-003-01 issue date: jan.30, 2012 ML9078-003 lsi for power-saving solar power supply control 1/20 ? outline ML9078-003 is power supply control lsi which performs selection control for a solar cell power supply and a primary battery. this lsi consists of a direct switch circuit and a regulator circuit, and each circuit performs the following operations. direct switch circuit - primary battery side direct switch circuit (bat_direct) x this always compare the primary battery side voltage (v bat ) with the output voltage (vdo) of ML9078-003. in case v bat >vdo, a primary battery side direct switch will be set to on and the primary battery side voltage (v bat ) is supplied to the output voltage (vdo). - solar cell side direct switch circuit (sc_direct) x this always compare the solar cell side voltage (v sc ) with the output voltage (vdo) of ML9078-003. in case v sc >vdo, a solar cell side direct switch will be set to on and the primary battery side voltage (v sc ) is supplied to the output voltage (vdo). regulator circuit x the solar cell side voltage (vsc) will be limited to be vbat voltage(typ). ? feature comparison of primary battery power supply voltage (v bat ) and solar cell power supply voltage (v sc ) is performed, and the power supply source is selected automatically. - when primary battery voltage (v bat ) is higher than solar cell voltage (v sc ), it outputs primary battery voltage (v bat ) to the output terminal (vdo) of ML9078-003. - when solar cell voltage (v sc ) is higher than primary battery voltage (v bat ), it outputs solar cell voltage (v sc ) to the output terminal (vdo) of ML9078-003. the adverse current from a solar cell to a primary battery is prevented. - when primary battery voltage is low, the direct switch by the side of a primary battery turns off. the adverse current to a primary battery from a solar cell is prevented, and the primary battery destruction by the adverse current from a solar cell to a primary battery can be prevented. direct power supply from whether a solar cell output or a primary battery output to the external lsi is available. (at the time of screg=l) the regulator output voltage is selectable by the external input. (at the time of screg=h) - regulator output voltage(v ld ) will be limited to be vbat voltage(typ) (v sc >=2v, i sc <=0.1ma, 25 c conditions) low power operation - primary-battery side consumption current: max 80na at 25 c - screg=l, solar-cell side consumption current: max 80na at 25c - screg=h,solar-cell side consumption current: max 200na at 25c a monitor of the use situation of a solar panel is possible. - in case di_moni=h, current is supplied from solar cell to external circuit. - in case di_moni=l, current is supplied from primary battery to external circuit.
fedl9078-003-01 ML9078-003 2/20 shipment form - 12-pin plastic wqfn x part number : ML9078-003gdz05b - chip x part number : ML9078-003wa guaranteed operation range - operating temperature : -20 to +70 c - operating voltage : v sc = 0.0 to 4v, v bat = 1.1 to 3.6v
fedl9078-003-01 ML9078-003 3/20 ? block diagram ML9078-003 block diagram - the block diagram of ML9078-003 is shown in fig. 1. fig 1 ML9078-003 block diagram ? pin configuration ML9078-003gdz05b terminal arrangement fig. 2 ML9078-003 package article terminal arrangement plan v ss v sc sclv 1 bat_direct v bat v ld di_moni sc_direct screg sw 2 1 v ld voltage is limited to vbat voltage by regulator. 2 regulator can be disabled by screg through sw. vdo regulator v ss v bat di_moni 1 2 3 4 7 5 6 8 9 10 11 12 v sc vdo (nc) screg (nc) (nc): no connection sclv (nc) (nc) (nc)
fedl9078-003-01 ML9078-003 4/20 ML9078-003wa terminal arrangement and outline drawing chip size : 1.1mm x 1.1mm the number of pads : 7 pins minimum pad pitch : 120 m pad opening : 90 m x 90 m chip thickness : 350 m the voltage on the back of a chip is v ss level. fig. 3 ML9078-003 chip outline drawing ML9078-003 chip article pad coordinates table 1 ML9078-003 pad coordinates table chip center: x=0,y=0 ML9078-003 ML9078-003 pad no. pad name x ( m) y ( m) pad no. pad name x ( m) y ( m) 1 vss 432.0 -228.0 7 - - - 2 vsc 432.0 -21.0 8 screg -432.0 -287.0 3 vdo 432.0 385.0 9 sclv -432.0 -407.0 4 vbat 156.0 432.0 10 - - - 5 di_moni -27.0 432.0 11 - - - 6 - - - 12 - - - 1 vss y x 1.1mm 1.1mm 2 vsc 3 vdo 4 vbat 5 di_moni 8 screg 9 sclv
fedl9078-003-01 ML9078-003 5/20 ? terminal explanation table 2 explanation of terminal terminal name i/o explanation logic power supply terminal v ss - it is the minus side power supply terminal. - v bat - it is the primary battery plus side power supply terminal. - v sc - it is the plus side power supply terminal of a solar power supply. it connects with the plus side of a solar power supply. - regulator setting input terminal sclv i please fix the sclv to low it is an input port for a regulator voltage setup. in case sclv=l, regulator output voltage will be limited to be 1.5v(typ) in case sclv=h, regulator output voltage will be limited to be 3.0v(typ) positive screg i it is an input port for an enabling setup of a regulator. in case screg=l, regulator is disabled by screg through sw. in case screg=h, regulator output voltage will be limited to be vbat voltage(typ) positive the output terminal of a primary battery and a solar power supply vdo o it is an output terminal of a primary battery and a solar power supply. - the output terminal which displays power supply source di_moni o it is an output terminal for displaying power supply source. in case di_moni=h, current is supplied from solar cell to external ciruit. in case di_moni=l, current is supplied from primary battery to external ciruit. negative ? termination of unused pins table 3 shows methods of terminating the unused pins. table 3 termination of unused pins terminal recommendation terminal processing output vdo open di_moni open input sclv (*1) please fix to v ss screg (*1) v sc or v ss * note consider input to fix to v sc or v ss .
fedl9078-003-01 ML9078-003 6/20 ? electrical property absolute maximum rating (v ss = 0v) item sign conditions rated value unit power supply voltage 1 v bat top = 25 c -0.3 to +4.2 v power supply voltage 2 v sc top = 25 c -0.3 to +5.6 v power supply voltage 3 vdo top = 25 c -0.3 to +5.6 v input voltage v in top = 25 c - 0.3 to v sc +0.3 v output voltage v out top = 25 c -0.3 to vdo+0.3 v output current 1 i out1 vdo, top = 25 c 10 ma permissible loss pd top = 25 c 0.88 w preservation temperature t stg - -40 to +125 c recommendation operation conditions (v ss = 0v) item sign conditions range unit temperature of operation t op - -20 to +70 c v sc * top=-20 to 70 0.0 to 4.0 voltage of operation v bat top=-20 to 70 1.1 to 3.6 v external capacitance for regulator output voltage stabilization cdo top=-20 to 70 v sc =0v to 4.0v v bat =1.1v to 3.6v screg=h 0.07 ~ 0.13 f * note starting about the power of vsc, the following cases twup = 1000us / v start-up speed, it may jump the regulator's output volta ge. please check the operation of the regulator in your environment. please start after stand-by-time twait=10msec when a vsc power supply is less than 0.5v. t wup v sc v sc x0.1 v sc x0.9 v sc t wait v ss notice of starting speed and stand-by-time for v sc
fedl9078-003-01 ML9078-003 7/20 direct-current characteristic (input) (v bat =1.1v to 3.6v, vsc=0.0v to 4.0v, vss=0v, and top=-20 to +70 c, unless otherwise specified) rating item sign conditions min. typ. max. unit measuring circuit vih v sc =1.1 to 4.0v 0.7 xv sc - v sc v sc =1.3 to 4.0v 0 - 0.3 xv sc input voltage ( screg) vil v sc =1.1 to 4.0v 0 - 0.2 xv sc v iih v sc =1.1 to 4.0v - - 10 input (screg) iil v sc =1.1 to 4.0v -10 - - na 1 . direct-current characteristic (power supply control) (v bat =1.1v to 3.6v, v sc =0.0v to 4.0v, v ss =0v, and top=-20 to +70 c , unless otherwise specified ) standard value item sign conditions min. typ. max. unit measuring circuit v bat =3.6v v sc =4v top =25 screg=l - 80 150 v bat =3.6v v sc =4v top =25-75 screg=l - - 1500 v bat =3.6v v sc =4v top =25 screg=h - 80 200 primary battery side consumption current idd bat (*1) v bat =3.6v v sc =4v top =25-75 screg=h - - 1500 v sc =4v v bat =3.6v top =25 screg=l - 80 150 v sc =4v v bat =3.6v top =25-75 screg=l - - 1500 v sc =4v v bat =3.6v top =25 screg=h - 200 2000 solar power supply side consumption current idd sc (*2) v sc =4v v bat =3.6v top =25-75 screg=h - - 3500 na 2 *1 : idd bat is consumption current to the current consumed by the primary battery side. *2 : idd sc is consumption current to the current consumed by the solar power supply side.
fedl9078-003-01 ML9078-003 8/20 (v bat =1.1v to 3.6v, v sc =0.0v to 4.0v, v ss =0v, and top=-20 to +70 c, unless otherwise specified.) standard value item sign conditions min. typ. max. unit measuring circuit v sc v bat - 50mv 1.1v Q v bat Q 2v vdo Q vbat-0.3v top = 25 2 - - vdo output current (vdo is supplied from v bat ) ivdo bat v sc v bat - 50mv v bat 2.0v vdo Q vbat-0.19v top = 25 2 - - ma 3 v sc v bat - 50mv 1.1v Q v sc Q 2v vdo Q vsc-0.3v top = 25 2 - - vdo output current (vdo is supplied from v sc ) regulator through mode ido sc v sc v bat - 50mv v sc 2.0v vdo Q vsc-0.13v top = 25 screg=l 2 - - ma 3 ido reg(l1) 1.15v Q v sc Q 4v v bat +50mv Q v sc Q v bat +0.4v vdo Q v bat -0.33v cdo=0.1uf top = 25 screg=h sclv=l 0.1 - - vdo output current (vdo is supplied from v sc ) regulator operational mode ido reg(l2) 1.5v Q v sc Q 4v v sc v bat +0.4v vdo Q v bat -0.13v cdo=0.1uf top = 25 screg=h sclv=h 0.1 - - ma 3
fedl9078-003-01 ML9078-003 9/20 alternating-current characteristic (power supply control) specifies the output voltage value at the time of actual operation vdo. (v bat =1.1v to 3.6v, v sc =0.0v to 4.0v, v ss =0v, and top=-20 to +70 c, unless otherwise specified.) standard value item sign conditions min. typ. max. unit measuring circuit v sc v bat - 50mv 1.1v Q v bat Q 2v i bat Q 2ma top = 25 v bat - 0.4 v bat - 0.15 - vdo voltage (vdo is supplied from v bat ) vdo bat v sc v bat - 50mv v bat 2.0v i bat Q 2ma top = 25 v bat - 0.25 v bat - 0.15 - v 4 v sc v bat - 50mv 1.1v Q v sc Q 2v i sc Q 2ma top = 25 v sc - 0.4 v sc - 0.15 - vdo voltage (vdo is supplied from v sc ) regulator through mode vdo sc v sc v bat ? 50mv v sc 2.0v i sc Q 2ma top = 25 screg=l v sc - 0.25 v sc - 0.13 - v 4 vdo reg(l1) v sc v bat +50mv 1.15v Q v sc Q v bat +0.4v i sc Q 0.1ma cdo=0.1uf top = 25 screg=h sclv=l 0.8 v bat v bat +0.15 vdo voltage (vdo is supplied from v sc ) regulator operational mode vdo reg(l2) v sc v bat +0.4v i sc Q 0.1ma cdo=0.1uf top = 25 screg=h sclv=h v bat -0.2 v bat v bat +0.15 v 4
fedl9078-003-01 ML9078-003 10/20 ML9078-003 operation in regulator through mode v ery bright v sc bright dark dark vdo reg(l1) vdo reg(l2) vdo bat vdo bat vdo reg vdo output conditions v bat >v sc v bat vdo reg(l2) v bat v sc brightness v bat v sc v do waveform v sc v bat v bat -v do v do
fedl9078-003-01 ML9078-003 11/20 ML9078-003 operation in regulator mode v ery bright v sc v bat v bat -vdo bright v do dark dark vdo reg(l1) vdo reg(l2) vdo bat vdo bat vdo reg vdo output conditions v bat >v sc v bat vdo reg(l2) v bat v sc brightness v bat v sc vdo
fedl9078-003-01 ML9078-003 12/20 direct-current characteristic (di_moni) (v bat =1.1v to 3.6v, v sc =0.0v to 4v, v ss =0v, and top=-20 to +70 c , unless otherwise specified ) standard value item sign conditions min. typ. max. unit measuring circuit ioh1=-0.5ma v do =1.8v ~ 4.0v v sc 0.7 - - ioh1=-0.1ma v do =1.3v ~ 4.0v v sc 0.5 - - voh1 ioh1=-0.03ma v do = 1.1v ~ 4.0v v sc 0.5 - - v 5 iol1=+0.5ma v do =1.8v ~ 3.6v - - 0.7 iol1=+0.1ma v do =1.3v ~ 3.6v - - 0.7 output voltage 1 (di_moni) vol1 iol1=+0.03ma v do =1.1v ~ 3.6v - - 0.5 v 6 . alternating-current characteristic (di_moni) (v bat =1.1v to 3.6v, v sc =0.0v to 4v, v ss =0v, and top=-20 to +70 c , unless otherwise specified ) standard value item sign conditions min. typ. max. unit measuring circuit di_moni detection voltage vdm top = 25 c v bat -0.1 v bat v bat +0.1 v 5 v sc vdm dark bright di_moni dark operation of di_moni v bat
fedl9078-003-01 ML9078-003 13/20 ? measuring circuit measuring circuit 1 measuring circuit 2 measuring circuit 3 v sc v bat vdo v ss screg sclv di_moni for logic set a a a v sc v bat vdo v ss screg sclv di_moni for logic set a a v v sc v bat vdo v ss screg sclv di_moni for logic set a a a v
fedl9078-003-01 ML9078-003 14/20 measuring circuit 4 measuring circuit 5 measuring circuit 6 v sc v bat vdo v ss screg sclv di_moni for logic set a v a v sc v bat vdo v ss screg sclv di_moni for logic set a v a v sc v bat vdo v ss screg sclv di_moni for logic set a v a
fedl9078-003-01 ML9078-003 15/20 ? appllilcation circuit simple application - sclv=l, screg=l when di_moni is used (1.5v battery) - sclv=l, screg=l v sc v bat vdo v ss screg sclv di_moni mcu vdd vss a-si solar cell (*2) x 2 (1v to 1.4) to x 4 (2v to 2.8v) primary battery 1.6v c-si solar cell (*1) x 3 (1.2 to 1.5v) to x 4 (1.6 to 2.0v) + - v sc v bat vdo v ss screg sclv di_moni mcu vdd vss a-si solar cell (*2) x 2 (1v to 1.4) to x 6 (3v to 4v) primary battery 1.6v to 3.2v + - c-si solar cell (*1) x 3 (1.2 to 1.5v) to x 8 (3.2 to 4.0v)
fedl9078-003-01 ML9078-003 16/20 when di_moni is used (3v battery) - sclv=l, screg=l when a regulator is used (1.5v battery) - sclv=l, screg=h - when using a regulator, please insert the external capacitance cdo = 0.01uf to 0.1uf between vdo and v ss for regulator output voltage stabilization. v bat vdo v ss screg sclv di_moni mcu vdd vss a-si solar cel l(*2) x 5 (2.5v to 3.5v) to x 6 (3v to 4v) primary battery 3.2v c-si solar cell (*1) x 6 (2.4 to 3v) to x 8 (3.2 to 4.0v) v sc + - 0.01uf to 0.1uf operation under 2.5v v sc v bat vdo v ss screg sclv di_moni mcu vdd vss a-si solar cell (*2) x 2 (1v to 1.4) to x 4 (2v to 2.8v) primary battery 1.6v c-si solar cell (*1) x 6 (2.4 to 3v) + -
fedl9078-003-01 ML9078-003 17/20 when a regulator is used (3v battery) - sclv=l, screg=h - when using a regulator, please insert the external capacitance cdo = 0.01uf to 0.1uf between vdo and v ss for regulator output voltage stabilization. *1 : c-si solar cell is a crystal si type solar cell. (the single crystal si, the many crystals si) *2 : a-si solar cell is an amorphous si type solar cell. (amorphous silicon) 0.01uf to 0.1uf operation under 4.2v v bat vdo v ss screg sclv di_moni mcu vdd vss a-si solar cell (*2) x 5 (2.5v to 3.5) to x 6 (3v to 4v) primary battery 3.2v c-si solar cell (*1) x 8 (3.2 to 4.0v) v sc + -
fedl9078-003-01 ML9078-003 18/20 ? package dimensions (unit: mm) p-wqfn12-0303-0.50-63 package material epoxy resin lead frame material cu alloy lead finish ni/pd/au solder thickness au/pd max0.01/max0.15 package weight (g) 0.01980typ. rev. no./last revised 3 / oct. 07,2010 attention on surface mount type package mounting a surface mount type package is a package which is very much easy to receive influence in the heat at the time of reflow mounting, the amount of moisture absorption of the package at the time of storage, etc. therefore, when inquired by implementation of reflow mounting, please be sure to ask the product name, a package name, the number of pins, a package code and the mounting conditions (the reflow method, temperature, number of times) for which it wishes, storage conditions, etc. to th e business assigned to our company.
fedl9078-003-01 ML9078-003 19/20 ? revision history page document no. date of issue before revision after revision the contents of change fedl9078-003-01 jan.30,2012 - - first edition issue
fedl9078-003-01 ML9078-003 20/20 notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of lapis semiconductor co., ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing lapis semiconductor's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from lapis semiconductor upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage an d 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 specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, lapis semiconductor shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circui ts for the products. lapis semiconductor does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by lapis semiconductor and other parties. lapis semiconductor shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are in tended to be used with general-use elect ronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while lapis semiconductor 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, fire or any other damage caused in the event of the failu re of any product, such as derating, redundancy, fire control and fail-safe designs. lapis semiconductor shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accord ance 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 h uman injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-react or controller, fuel-controlle r or other safety device). lapis semiconductor 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 techno logy specified 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. copyright 2012 lapis semiconductor co., ltd.

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