thine electronics, inc. preliminary thv1021-rev0.05w p r e l i m i n a r y features ?tssop 24pin package ?input voltage range : 4.2 to 18.0v ?push pull output for direct power mos driving ?optimized for ceramic output capacitor ?complete pwm mode controller ?adjustable switching frequency 200khz to 1mhz by external resister ?timer latch protection ? system uvlo function ?adjustable soft start time by external capacitor ?adjustable timer latch delay time by external capacitor ?adjustable dead time control by external resistor ? ch1 is buck/boost controller ? ch2 is buck/inver ting controller applications ? tft lcd bias voltage supply ? tv/monitor set ? general use 2ch buck, boost and inverting controller thv1021 pin asignment general description thine's new 2ch buck/boost & inverting controller enables simple & low cost multi-channel power supply system design. ch-1 is select able buck/boost controller, ch-2 is selectable inverting / buck converter. all channels are pwm controllers and are designed to make phase compensation easy for output ceramic capacitors. ss_1,2, dtc_1,2, and scp pins help to design user defined soft start time, dead time and timer latch delay time. utilizing those pins an d p_good 1,2, the ensured sequence control can be easily set and linked to the external circuit. this ic is suitable for powe r supply system of tft lcd bias and for system boar d with multi-channel power supply. tssop 24p 7 5 6 8 3 2 1 4 9 10 11 12 16 23 13 14 15 22 21 20 18 19 24 17 sysuvlo fb_1 dtc_1 ss_1 scp inv_1 sgnd fb_2 inv_2 vref non_inv_2 ss_vref pgnd slct_1 rt out_2 ss_2 dtc_2 p_good2 out_1 p_good1 vcc xp_det out_sys
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