365 regulator ics surface-mount type power supply unit for lcd drives BP5307 the BP5307 is a dc / dc converter unit designed for driving liquid crystal displays (lcds). the unit supplies a positive voltage for lcds from a logic circuit power supply ( 5v). being in a compact and light surface-mount package, the ic can be built into a lcd panel. applications lcd panels of personal computers, word processors, and copiers features 1) automatic mounting and reflow soldering are pos- sible. 2) with a maximum thickness of 4.1mm, the ic can be built into a lcd panel. 3) output voltage can be regulated by a microcontroller. 4) discharg circuit is built in for output. (fall time: 1ms typ.) absolute maximum ratings (ta = 25 c) block diagram
366 regulator ics BP5307 pin descriptions electrical characteristics (unless otherwise noted, ta = 25 c and v ctl = 0.8v)
367 regulator ics BP5307 measurement circuit electrical characteristic curves
external dimensions (units: mm) 368 regulator ics BP5307 recommended pad dimensions operation notes the soldering used inside the unit is eguivalent to h63 solder, so it will remelt during reflow. be sure not to sub- ject the unit to any vibrations when passing through the reflow furnace.
|
