preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 1 of 8 high efficiency boost dc/dc regulator general description the LP6203 is a compact, high efficiency, and low voltage step-up dc/dc converter including an error amplifier, ramp generator, comparator, switch pass element and driver in which providing a stable and high efficient operation over a wide range of load currents. it operates in stable waveforms without external compensation. the low start-up input voltage below 1.6v makes LP6203 suitable for 2 to 4 battery cells applications of providing up to 1a output current. the high switching rate minimized the size of external components. besides, the 19a low quiescent current together with high efficiency maintains long battery lifetime. the output voltage is set with two external resistors. ordering information LP6203 - f: pb-free package type qv: tdfn-6 applications ? alk. battery products marking information please see website. features ? 1.6v start-up input voltage ? output up to 20v ? high supply capability to deliver 6v 500ma with 2 alkaline cell ? 19a quiescent (switch-off) supply current ? zero shutdown mode supply current ? 90% efficiency ? up to 450khz switching frequency ? using internal power switches ? small dfn2*2-6 package ? typical application circuit LP6203qvf 4 1 3 6 5 2 vdd soe n/a sw fb gnd + 10uf 0.01 r2 500k ss24 r1 1.5m vin 10uh vout 22pf 22pf 1k + cout 47uf 1uf pin configurations tdfn-6(top view)
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 2 of 8 functional pin description pin number pin name function 1 soe source of the mosfet. 2 gnd ground 3 n/a no connector 4 vdd output 5 fb feedback 6 sw switch output pad1 connected to pin 6 internally pad2 need to connect to gnd function block diagram absolute maximum ratings supply input voltage------------------------------------------------------------------------------------------------------- 6v sw pin switch voltage--------------------------------------------------------------------------------- ? 0.3v to (vout + 0.8v) other i/o pin voltages---------------------------------------------------------------------------------- ? 0.3v to (vout + 0.3v) sw pin switch current ---------------------------------------------------------------------------------------------------- 2 .5a sw pin voltage(max) ------------------------------------------------------------------------------------- 23v lead temperature (soldering, 10 sec.) ----------------------------------------------------------------------------------260c storage temperature range --------------------------------------------------------------------------------- ? 65c to 150c esd susceptibility hbm (human body mode) ----------------------------------------------------------------------------------------------------2kv mm(machine-mode)-----------------------------------------------------------------------------------------------------------200v recommended operating conditions supply input voltage-------------------------------------------------------------------------------------------------1.6v to 6. 5v operation ambient temperature range------------------------------------------------------------------ ? 40c to 85c LP6203
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 3 of 8 electrical characteristics (v in = 1.5v, vdd set to 3.3v, load current = 0, ta = 25c, unless otherwise specified) parameter test conditions min typ max units start-up voltage il = 1ma 1.50 1.55 v operating vdd range vdd pin voltage 2 6.5 v no load current i (v in ) v in = 2v, v out = 6v 19 a feedback reference voltage close loop, vdd = 3.3v 1.187 1.212 1.237 v switching frequency vdd = 3.3v khz maximum duty vdd = 3.3v 80 % sw on resistance vdd = 3.3v 0.3 ? current limit setting vdd = 3.3v 2.5 a line regulation v in = 1.5 ~ 2.5v, il = 1ma 10 mv/v load regulation v in = 2.5v, il = 1 ~ 100ma 0.25 mv/ma temperature stability for v out 50 ppm/ thermal shutdown 165 thermal shutdown hysterises 10
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 4 of 8 typical operating characteristics ta=25 , c in =10 f, c out =20 f, l=4.7 h, unless otherwise noted. refer to test circuit figure. 1 vout=3.3v ( rm=0.33/5 ? ) output voltage vs output current 0 0.5 1 1.5 2 2.5 3 3.5 0 200 400 600 800 output current (ma) output voltage (v) vin=1.1v vin=1.5v vin=1.8v start up voltage and hold on voltage vs output current 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0 1020304050 output current (ma) vin (v) start up hold on efficiency vs output current 50 55 60 65 70 75 80 10 100 1000 output current (ma) efficiency (%) vin=1.1v vin=1.5v efficiency vs output current 50 55 60 65 70 75 80 85 10 100 1000 output current (ma) efficiency (%) vin=1.8v vin=2.4v oscillator frequency vs supply voltage (io=200ma) 100 150 200 250 300 350 400 450 11.522.5 supply voltage (v) oscillator frequency (khz)
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 5 of 8 t t y y p p i i c c a a l l p p e e r r f f o o r r m m a a n n c c e e c c h h a a r r a a c c t t e e r r i i s s t t i i c c s s ta=25 , c in =10 f, c out =20 f, l=4.7 h, unless otherwise noted. vout=5v (rm=0.33/5 ? ) efficiency vs output current 30 40 50 60 70 80 90 10 100 1000 output current (ma) efficiency (%) vin=1.2v vin=1.8v vin=2.4v efficiency vs output current 60 65 70 75 80 85 90 10 100 1000 output current (ma) efficiency (%) vin=3.3v vin=4.2v start up voltage and hold on voltage vs output current 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 1020304050 output current (ma) vin (v) start up hold on output voltage vs output current 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 0 200 400 600 800 output current (ma) output voltage (v) vin=1.1v vin=1.5v vin=1.8v oscillator frequency vs supply voltage (io=200ma) 150 200 250 300 350 400 450 1.5 2 2.5 3 3.5 4 supply voltage (v) oscillator frequency (khz)
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 6 of 8 lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=2.4 vout=3.3v @ 200ma lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=1.8 vout=3.3v @ 200ma lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=1.5 vout=3.3v @ 200ma lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=3.3v vout=5v @ 200ma lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=2.4v vout=5v @ 200ma lx pin wave form & output ripple time (1s/div) output ripple lx wave for m vin=4v vout=5v @ 200ma
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 7 of 8 t t y y p p i i c c a a l l p p e e r r f f o o r r m m a a n n c c e e c c h h a a r r a a c c t t e e r r i i s s t t i i c c s s ta=25 , c in =10 f, c out =20 f, l=4.7 h, unless otherwise noted. refer to test circuit figure. 2 v out =5v (rm=0.33/5 ? ) efficiency vs output current (vout=5v) 40 45 50 55 60 65 70 75 80 10 100 1000 output current (ma) efficiency (%) vin=1.8v vin=2.4v efficiency vs output current (vout=5v) 40 50 60 70 80 90 100 10 100 1000 output current (ma) efficiency (%) vin=3.3v vin=4.2v output voltage vs output current 0 1 2 3 4 5 6 0 200 400 600 800 1000 output current (ma) vout (v) vin=1.8v vin=2.4v oscillator frequency vs supply voltage (io=300ma) 200 250 300 350 400 450 22.533.54 supply voltage (v) oscillator frequency (khz)
preliminary datasheet LP6203 LP6203 ?01 ver. 1. 1 datasheet feb.-2009 page 8 of 8 packaging information dimensions in millimeters dimensions in inches symbol min max min max a 0.700/0.800 0.800/0.900 0.028/0.031 0.031/0.035 a1 0.000 0.050 0.000 0.002 a3 0.203ref 0.008ref d 1.924 2.076 0.076 0.082 e 1.924 2.076 0.076 0.082 d1 0.520 0.720 0.020 0.028 e1 0.900 1.100 0.035 0.043 k 0.200min 0.008min b 0.250 0.350 0.010 0.014 e 0.650typ 0.026typ l 0.174 0.326 0.007 0.013
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