1/4 rev. a structure silicon monolithic integrated circuit product name dc/dc converter ic for camera module for car navigation system model name b d 8 6 7 1 k n block diagram fig. - 2 features ? +3.3v output step down dc/dc converter for asynchronous rectification system ? +12v output boost dc/dc converter for asynchronous rectification system ? -5v output voltage control charge pump for reversing type for negative voltage ? soft start function ? building in low voltage and over voltage protection function ? building in terminal rt open/short protection ? the frequency can be set by external resistance ? concentrated protection control with built-in sequencer ? vqfn-28 package absolute maximum rating: ta = 25 parameter symbol limits unit vin supply voltage vin -0.3 +18.0 v pvin supply voltage pvin -0.3 vin v input terminal voltage 1 *1 vin1 -0.3 vin v input terminal voltage 2 *2 vin2 -0.3 +20.0 v input terminal voltage 3 *3 vin3 -0.3 +20.0 v input terminal voltage 4 *4 vin4 -10.0 +0.3 v output terminal voltage 1 *5 vout1 -0.3 vin v output terminal voltage 2 *6 vout2 -0.3 pvin v output terminal voltage 3 *7 vout3 -0.3 +20.0 v output terminal voltage 4 *8 vout4 -0.3 vin3 *10 v output terminal voltage 5 *9 vout5 vin4 +0.3 v power dissipation pd 0.725 *11 w operating temperature topr -40 +85 storage temperature tstg -55 +150 *1 fb12 ss12 test1 test2 test3 rt ctl1 ctl2 ctl3 ss33 v33 terminal voltage *2 v12 terminal voltage *3 v12in terminal voltage *4 mv8 terminal voltage *5 fc12 terminal voltage *6 sw33 terminal voltage *7 sw12 terminal voltage *8 v8 cp terminal voltage *9 mv5 cm terminal voltage *10 v8 terminal voltage absolute maximum rating is vin3 or 10v is low. between v8 terminal voltage and mv5 terminal voltage ab solute maximum rating is 15v. *11 70mm70mm, thickness1.6mm, less than 3% share of copper foil when implem enting glass epoxy board. operating at higher than ta=25 , 5.8mw shall be reduced per 1 operation condition (please set the power-supply voltage in consideration of a power dissipation.) parameter symbol min typ max unit vin supply voltage vin 4.5 6.0 9.0 v this product is not designed for protection against radioactive rays.
2/4 rev. a electrical characteristics (unless otherwise noted ta=25 , vin=6.0v,pvin=6.0v,ctl1,2,3=6.0v,gnd=0v) parameter symbol specification value unit condition min typ max vin,pvin circuit current 1 i q1 - 0 50 a ctl1,2,3=0v vin,pvin circuit current 2 i q2 - 4.1 6.1 ma ctl1,2,3=vin v v33 =3.5v v v12 =13.0v v v12in =12.0v v12in circuit current i q - 2.3 3.3 ma ctl1,2,3=vin v v33 =3.5v v v12 =13.0v v v12in =12.0v range of dc/dc converter oscillation frequency setting f os c 500 1000 1200 khz it is possible to set it with the terminal rt. 3.3v output voltage v 03 3 3.234 3.300 3.366 v terminal ss discharge resistance r v33dis 270 390 500 ? ctl1,2,3=0v terminal ss charging current i ss3 3 -4.0 -2.5 -1.0 a v ss33 =1.0v terminal ss threshold voltage v ss33t h 1.0 1.1 1.2 v v ss33 voltage v v33 =3.3v terminal ss clamping voltage v ss33clm 1.6 1.9 2.2 v terminal ss standby voltage v ss33stb 0.11 0.15 0.19 v v ss33 voltage (l h) terminal ss standby voltage maximum hysteresis error v ss33stb_hys 5 50 100 mv terminal ss discharge resistance r ss33dis 4.9 7.0 9.1 k ? ctl1,2,3=6.0 0.0v terminal ss protection circuit start voltage v ss33po n 1.0 1.1 1.2 v v ss33 voltage (l h) terminal ss protection circuit start voltage maximum hysteresis error v ss33pon_hys 10 100 200 mv v ss33 voltage terminal v33 low voltage detection voltage v v33lv p 1.11 1.32 1.53 v v v33 voltage (h l) terminal v33 low voltage detection maximum hysteresis error v v33lvp_hys 41.2 412 824 mv v v33 voltage terminal v33 overvoltage detection voltage v v33ov p 4.45 4.95 5.45 v v v33 voltage (l h) < boost dc/dc converter of 12v output part > 12v output voltage v 01 2 11.76 12.00 12.24 v terminal v12 discharge resistance r v12dis 270 390 500 ? ctl1,2,3=0v terminal fc12 clamping voltage h v fc12 h 1.2 - - v v v12 =10.5v terminal fc12 clamping voltage l v fc12l - - 0.2 v v v12 =13.5v terminal fc12 sink current i fc12sink 0.3 - - ma v v12 =13.5v v fc12 =0.4v terminal fc12 source current i fc12source - - -14 a v v12 =10.5v v fc12 =1.4v terminal ss12 charging current i ss1 2 -4.0 -2.5 -1.0 a v ss12 =1.0v terminal ss12 threshold voltage v ss12t h 1.0 1.1 1.2 v v ss12 voltage v fb12 =0.8v terminal ss12 clamping voltage v ss12clm 1.6 1.9 2.2 v terminal ss12 standby voltage v ss12stb 0.11 0.15 0.19 v v ss12 voltage (l h) terminal ss12 standby voltage maximum hysteresis error v ss12stb_hys 5 50 100 mv terminal ss12 discharge resistance r ss12dis 4.9 7.0 9.1 k ? ctl1,2,3=6.0 0.0v terminal ss12 protection circuit start voltage v ss12po n 1.0 1.1 1.2 v v ss12 voltage (l h) terminal ss12 protection circuit start voltage maximum hysteresis error v ss12pon_hys 10 100 200 mv v ss12 voltage terminal v12low voltage detection voltage v v12lv p 4.0 4.8 5.6 v v v12 voltage (h l) terminal v12 low voltage detection maximum hysteresis error v v12lvp_hys 0.15 1.5 3.0 v v v12 voltage terminal v12 overvoltage detection voltage v v12ov p 16.2 18.0 19.8 v v v12 voltage (l h) < -5v output reversing charge pump part > terminal mv5 output voltage v mv 5 -5.10 -5.00 -4.90 v mv8= - 8.0v terminal mv5 discharge resistance r mv5dis 200 320 430 ? ctl3=0v v v8 =8.0v terminal mv5 overvoltage detection voltage v mv 5 ov p -8.25 -7.50 -6.75 v v mv5 voltage v v33 =3.3v terminal mv5 protection circuit start voltage v mv5po n -4.5 -3.5 -2.5 v v mv5 voltage (h l) v v33 =3.3v terminal mv5 low voltage detection voltage v mv5lv p -2.5 -2.0 -1.5 v v mv5 voltage (l h) v v33 =3.3v terminal mv5 low voltage detection maximum hysteresis error v mv5lvp_hys 62.5 625 1250 mv v mv5 voltage v33=3.3v v v33 v33 voltage v vss33 ss33 voltage v v12 v12 voltage v fc12 fc12 voltage v ss12 ss12 voltage v mv5 mv5 voltage v mv8 mv8 voltage v v8 v8 voltage v v12in v12in voltage this product is not designed for protection against radioactive rays. the current ability must not exceed pd.
3/4 rev. a pin assignment no. symbol description no. symbol description 1 v12 12v output voltage detection terminal 15 test1 test terminal 2(0v is connec ted and use it usually). 2 fb12 error amplifier input terminal 16 sw33 3.3v coil connection terminal 3 fc12 error amplifier output terminal 17 pgnd33 po wer gnd (the same potenti al as terminal gnd) 4 ss12 12v soft start adjustment capacity c onnection terminal 18 ss33 3.3v soft start ad justment capacity connection terminal 5 pgnd12 gnd(0v connection) 19 v33 3.3v output voltage detection terminal 6 sw12 12v coil connection terminal 20 test3 test te rminal 3 (it uses it by the open usually.) 7 test2 test terminal 2(0v is connected and use it usually). 21 sgnd sense gnd( the same potential as terminal gnd) 8 ctl1 3.3v output control terminal 22 mv5 -5v regulator output terminal 9 vin power supply input terminal 23 mv8 -8v charge pump output terminal 10 gnd gnd(0v connection) 24 cm capacity connection terminal for charge pump ( ) 11 rt frequency adjustment resistance connection terminal 25 pg ndv8 power gnd (the same potential as terminal gnd) 12 pvin power supply input terminal for powertr (=vin) 26 cp capacity connection terminal for charge pump ( ) 13 ctl3 -5v output control terminal 27 v8 8v regulator output terminal 14 ctl2 12v output control terminal (*12) 28 v12in ldo12v voltage input terminal *12 h->l (on->off) control, when ctl3=l. (refer to note on use-13) package outline block diagram fig.- package outline fig.-2.block diagram d8671 lot no. ctl1 ctl2 ctl3 sequencer v12in vin rt osc gnd ovp lvp d r v osc d r v osc pgnd12 v33 ss33 pgnd33 sw33 pvin v12 ss12 sw12 test1 test2 test3 tsd fb12 fc12 sgnd v8 v8in cp cm charge pump cntorol mv8 osc mv8in mv5 bg pgndm8 osc vreg bg tsd pon v33 pon,lvp,ovp v12 pon,lvp,ovp mv5 pon,lvp,ovp 1pin mark vqfn-2 8 uni t mm product number
4/4 rev. a note on use 1 about the absolute maximum rating attention is brushed off enough to the quality control, it is li kely to destroy when the absolute maximum rating such as impres sed voltages (vcc_in,dcin) and ranges (topr) of the operating temperature as it is exceeded, the mode of breakings of the short or the opening, etc. cannot be specified, and examine it in this ic to give physical measures for safety such as fuses when a s pecial mode that exceeds the absolut e maximum rating is assumed. 2 about the reverse-connection of the power supply connector ic might destroy it by reversely connecting the power supply connector. give measures such as putting the diode between power s upply terminals of power supply and ic outside for the revers e-touching destruction protection. 3 power supply line please do measures such as putting the bypa ss capacitor in power supply-gnd nearest pin of this ic as the route of the resurrec tion current to cause the return of the current in which it resurrected it by the counter electromotive force of the coil. please confirm the characteristic of the el ectrolytic capacitor enough as the capacity omission etc. at the low temperature nev er happen, and decide it. 4 about grand potential any state of operation must become the lowest potential about the potential of the terminal gnd. moreover, confirm whether ther e is terminal that is actually the voltage of gnd or less including transients. 5 about the heat design think about permissible loss (pd) in an actual state of use, and do the heat design with the margin enough. 6 about the short and the miss-installation between terminals note the direction and the miss-registration of ic enough when you install it in the set substrate. ic might destroy it as well as reversely connecting the power supply connector when installing it by mistake. moreover, there is fear of destruction when the foreign body enters between ter minals, the terminal, the power supply, and grandeur and it is short-circuited. 7 about operation in strong electromagnetic field in use in strong electromagnetic field, note that there is a possibility of malfunctioning. 8 about the capacitor during output-gnd the current charged the capacitor with when vcc is 0v or is g nd and is short-circuited when a bi g capacitor is connected betwee n gnd output by some factors flows into the output and it is likely to destroy it. give the capacitor between gnd output to 0.1 f or less. 9 about the inspection by the set substrate it is likely to suffer stress to ic and discharge electricity every one process when you connect the capacitor with the pin wit h low impedance when inspecting it in the set substrate. moreover, detach it af ter connecting after the power supply is tu rned off without fail when detaching it to g in the inspection process, inspecting, and turning off the power supply. n addition, be give the earth to the assembly process as a static electricity mea sures, and careful enough when it transports and you preserve it. 10 about each input terminal this ic is a monolithic ic which has a p + isolations and p substrate to isolate elements each other. this p layer and an n layer in each element form a pn junction to construct vari ous parasitic elements. for instance, the potential difference operates in resistance as shown in the figure below when resistance and the transistor c onnect it with the terminal and the playground (gnd) >(terminal b) joint of pn operates as a parasi tic diode in playground (gnd) >(terminal a) transistor (npn). in addition, the npn transistor of parasitism works with n layer of the element of the above-mentioned parasitic diode and the neighborhood and others in transist or (npn). a parasitic element in ic composition is inevitably formed because of the potential relation. a parasitic element can operate, the interference with the circui t operation be caused, it malfunction, and, consequently, it c ause destruction. therefore, do not do the usage that a parasitic element operates as a voltage that is lower than the playground (gnd;p substrate) is impressed to the input terminal enough. moreover, do not impress the voltage to the input terminal when you do not impress the power-supply voltage to ic. give each in put terminal to me the voltage below the power-supply voltage or in the guarantee value of an el ectric characteristic when you similarly impress the power-sup ply voltage. example of ic of simple structure 11 earth wiring pattern if small signal gnd and large current gnd exist, disperse thei r pattern. in addition, for voltage change by pattern wiring impe dance and large current not to change voltage of small signal gnd, each ground terminal of ic mu st be connected at the one point on the set circuit board. as for gnd of external parts, it is similar to the above-mentioned. 12 thermal shut-down when a thermal shutdown operates, the dc/dc converter controller of all ch is turned off. when a thermal shutdown is released, the dc/dc converter controller of all ch becomes an oper ation beginning from turning off. 13 dc/dc converter control terminal (ctl1,2,3) this ic has 3 output voltage (3.3v,12.0v,-5.0v). when you turning off control 12.0v output from all output on(ctl1,2,3=h) time with the terminal ctl2, please control 12.0v output turning off with the terminal ctl2 after 200 s or more has passed by the terminal ctl3 since -5.0 the v output was turning off controlled.
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