1 m / s (heu) date: 31.may.2007 design department ome manufacturing operation hitachi lighting,ltd 16-2,shinmachi 6-chome,ome-shi tokyo 198-8611,japan tel.0428-31-1204 fax.0428-31-1224 customer?s acceptance specifications (backlight inverters for cold cathode fluorescent lamp) t y p e : i n v c
contents no item page cover 1 record of revision 2 1 scope 3 2 general specifications 3 3 electrical characteristics 4-5 4 reliability 6 5 structures 6 6 structures and dimensions 7 7 precautions in design 8-9 accepted by proposed by www..net
2 record of revision date page summary date code & rev. 31.may.2007 new
3 1. scope 1.1 this specification shall apply to inverter INVC816 to operate a cold cathode fluorescent lamp in the liquid-crystal display (lcd). 1.2 this inverter INVC816 is designed and adjusted for lmg74 ? 0plfc | lmg74 ? 1plbc and lmg532 ? xufc | lcd-module. (hitachi displays type name) 2. general specifications general specifications and condition for use are shown below. item specification output power nominal 1.35w cooling condition free air flow efficiency 60 % min. weight 11 g max. operating 10~50deg ambient temperature (direct ambient air of inverter board) stock -20~70deg humidity 90 % rh.max. corrosive gasses not acceptable audible sound level 35 db max. at 30cm mtbf 60000hrs. min.
4 3. electrical characteristics 3.1.maximum rating 3.2.operationg characteristics 3.0x130mm lamp at=25deg.c item min typ max unit remarks input voltage 7.0 12.0 17.0 v input current 130 180 230 ma at 12.0v rush current --- --- 2.0 a at 12.0v lamp current 3.5 4.2 4.9 ma at 12.0v lamp power --- 1.35 --- w at 12.0v main frequency 50 65 80 khz at 12.0v dimming range --- 100~50 --- % items min. typ. max. unit remarks input voltage --- --- 18.0 v
5 all characteristics are measured by our ce rtain test equipment. the measurement of condition should be stable light ing (more than 30 minutes a fter startup :at 25+/-1deg.c and no breath of wind) (the m easurement of input rush current is exception) . (1) the electrical characteristics are m easured as we show on measurement diagram fig.1. vin=12.0v. (2) as we show on measurement diagram fig.1, the test equipment shall be v1:dc volt meter (class0.5) a1:dc current meter(class0.5) a2:ac current meter type2016(y.e.w) or fluke45(fluke) vin:pw18-2tp(kenwood) . (3) the line length of between the lamp and cn2(high voltage)is less than 150mm. fig.1 wiring 3.3. wiring diagram remark controled by external open-collecter circuit. fig.2 wiring diagram cfl on/off dark 5k
5 vrb 4 cfl inverter INVC816 4 vra 3 cfl on/off 1 2 gnd 1 vin lo hi bright a 1 v1 a 2 l c m inverter 1 4 2 1 vin hi lo cn2 cn1 cn2 cn1 l c m brightness control variable resister vin dc7 ~ 17v(12vtyp) gnd
6 4.reliability item test condition low temp. operate 10deg.c, 12.0v, 100%output, 500hrs high temp. operate 50deg.c, 12.0v, 100%output, 500hrs low temp. stock -20deg.c, 500hrs high temp. stock 70deg.c, 500hrs high temp. and high humidity 50deg.c, 90% 12.0v, 100%output, 500hrs cyclic temp. operate 10deg.c - 25deg.c - 50deg.c 1hr each 12.0v, 100%output, 50cycles thermal shock -20deg.c - 70deg.c, 0.5hrs each 50cycles vibration 3g, 30~200hz, 0.5hrs,xyz-axis impact test 50g,xyz-axis 5.structures 5.1 dimensions reference to drawing p.7 5.2 interface specification input connector cn1:53261-0510(molex) pin no. symbol comment 1 vin dc7~17v 2 gnd 3 cfl on/off on: ?l?vol<0.8v,iol=2ma off:?open? 4 vra lower potential 5 vrb upper potential output connector cn2:il-g-4p-s3l2-sa(jae) pin no. symbol 1 lo 2 -- 3 -- 4 hi
7 6.structures and dimensions fig.3 dimensional outline .date code : ex ?31e7? 95+/- 0.5 cn2 cn1
15+/- 0.5 (2.5) 6.0+/- 0.3 78+/- 0.2 2.0max 2.5+/- 0.3 (11) 7.5+/- 0.5 6.5+/- 0.5 (0.5) 2- 1.7+/- 0.1 1.0 8.0max
input connecter output connecter 3.0max (11) 6.0max
8 7.precautions in design 7.1 please turn off the power supply of the inverter before the out put connector (cn2) be put in or put off. because voltage of the output connector is very high. 7.2 the high-voltage wiring of lamps may affect the characteristics of this product even in the presenc e of a slight stray capacity of 1 to few pf. so, please check whatever the belo w points have fully considered. (1) please use ul1330 equivalents as inverter output leads and keep length within 150mm. (2) please keep the length of wiring as short as possible and at the same time avoid binding high-voltage leads together and fitting high-voltage leads near the shield. (3) consider the electric potential of the parts adjacent to a wire because it greatly affects the electr ic characteristics and startup characteristics. 7.3 in the case of put in and put o ff the connector(cn1), please switch off power supply of the inverter. if power supply is operating, it will be possible that the inverter break down. 7.4 please pay attention in using the inverter. because the transformer in the inverter is weak to impact. 7.5 if it was exposed to thermal shock( out of order), come to have a crack itself. 7.6 please do not give it any changes , such as reworking it, applying and hardening with adhesives, molding wit h resin, fixing with tape. 7.7 please make a tight connection out put and input connector.(if inverter?s connecter contact was imperfection, th e components of inverter have high temperature and break down.)
9 7.8 pay attention as printed circui t board is bent, and not adding excessive pressure when printed circuit board is built in. (deterioration and the damage of component are caused, and mo vements of inverter are out of order.)
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