PFM DC/DC Vin=1 PFM DC/DC 3.3V 200mA 0.8V 200mA Vout=3.3V 0.8V Iout=1mA I q<5.5ua 2.5V 6.0V (0.1V 1 4 ) ± 2 ± 100ppm/ 85 5.5uA SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 SOT-89- PDA DSC MP3 Player 5 SOT-23-5 CE LED -XX X XX RN SOT-23-5 RM SOT-23-3 SM SOT-89-3 SN SOT-89-5 1 CE 2 CE 3 CE 4 CE 25 2.5V 30 3.0V 60 6.0V 1/16
SOT-89-3 SOT-89-5 SOT-23-3 SOT-23-5 1 4 1 4 Vss GND 2 2 2 2 Vout 3 5 3 5 Lx Ext 3 3 NC 1 1 CE CE -XX1SM XX V SOT-89-3 -XX1RM XXV SOT-23-3 -XX2RN XX V SOT-23-5 -XX3SM XXV SOT-89-3 -XX3RM XXV SOT-23-3 -XX4RN XXV SOT-23-5 -XX2SN XXV SOT-89-5 ------------------------------------------------------------------------------------------------0.3V~12V Lx ------------------------------------------------------------------------------------------0.3V~(Vout+0.3) CE -----------------------------------------------------------------------------------------------0.3V~(Vout+0.3) Lx -----------------------------------------------------------------------------------------0.7A,Pd T=25 C SOT-89-3 ------------------------------------------------------------------------------------------0. 5W SOT-89-5 ------------------------------------------------------------------------------------------0.5W SOT-23-5 ------------------------------------------------------------------------------------------0.15W SOT-23-3 ------------------------------------------------------------------------------------------0.15W -----------------------------------------------------------------------------------------150 C ----------------------------------------------------------------------------------------------- -20~+80 C 2/16
----------------------------------------------------------------------------------------------- -40~125 C --------------------------------------------------------------------------------------260 C,10S 0.8 Vout V 10 27 100 µh 0 10 µf * 47 100 220 µf -20 85 * Topt=25 C 2.45 2.5 2.55 2.646 2.7 2.754 2.94 3.0 3.06 Vout 3.234 3.3 3.366 3.528 3.6 3.672 V 3.92 4.0 4.08 4.9 5.0 5.1 5.88 6.0 6.12 Vin 12 V Iin * Iout=0mA () Vin=Vout*0.6 12 15 ua Vstart Iout=1mA Vin 0 2V 0.8 0.9 V Vhold Iout=1mA Vin 2 0V 0.6 0.7 V IDD Vout * =Vout 1.05 4 7 ua Rswon Vout= Vout*0.96 Lx 5 Ω 1V 0.4 0.5 Ω ILXleak Vout=Vlx=6V 0.5 ua VCEH CE H Vin 0 2V 0.6 0.9 V VCEL CE L Vin 2 0V 0.3 0.6 V Fosc LX Vout=Vout*0.96 300 350 400 Khz Maxdty Vlx On L side 70 75 80 η 85 3/16
1 Diode 0.3V 0.3A 1N5817,1N5819,1N5821,1N5822 2 27uH(R<0.5 Ω) 3 100uF( ) * DC-DC 0.6 3.3V 1.98V 4.0V 2.4V 1/3 SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 BOOST PFM DC-DC CMOS 5.5uA PFM 2.5V~6.0V PFM PFM - ±2% 100ppm/ 4/16
BOOST DC-DC Vout Vin D Vout 1 BOOST DC-DC Lmin 2 D(1 D) RL L min 2 f Lmin DC-DC D Vin I = Lf Im Vin DVin ax = (1 D) R + 2 L 2Lf L DC-DC 350KHz 3.3uH 50mA r L R load rl η 2 Rload ( 1 D) 1.5V 3.0V 20Ω 150mA r L=0.5Ω 10% 27uH <0.5Ω 5/16
2 ESR Vout D r = = Vout RloadCf 100uF 10mA ESR Imax RESR r' = r + Vout ESR 100mV ESR ESR 3 DC-DC DC-DC 5~10% 1N5817 1N5819 1N5821 1N5822 4 DC-DC DC-DC DC-DC 10uF 1I load=1ma SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 6/16
2I load=1ma SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 3I load=1ma SOT-89-3 SOT-23-3 SOT89-5 SOT-23-5 7/16
4 SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 Vout= *1.05 R=1KΩ C=0.1uF 5 SOT-89-3 SOT-23-3 SOT-89-5 SOT-23-5 Vin= *0.95 R=1KΩ. 8/16
( Cin=47uF,Cout=100uF,L=27uH opt=25 C ) T 1.Output Voltage VS. Output Current 2.Output Voltage VS. Output Current Output Voltage(V) -251SM Output Voltage VS. Output Current 2.55 2.45 2.35 2.25 2.15 2.05 1.95 0 50 100 150 200 250 300 350 400 450 500 550 Output Voltage(V) -331SM Output Voltage VS. Output Current 3.35 3.3 3.25 3.2 3.15 3.1 3.05 Vin=2.5V 3 0 50 100 150 200 250 300 350 400 450 500 3.Output Voltage VS. Output Current 4.Efficiency VS. Output Current -401SM Output Voltage VS. Output Current -251SM Efficiency VS. Output Current Output Voltage(V) 4.1 4 3.9 3.8 3.7 3.6 3.5 Vin=2.5V Vin=3.0V 3.4 0 50 100 150 200 250 300 350 400 450 500 Efficiency(η) 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0 50 100 150 200 250 300 350 400 450 500 5.Efficiency VS. Output Current 6.Efficiency VS. Output Current -331SM Efficiency VS. Output Current -401SM Efficiency VS. Output Current Efficiency(η) 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Vin=2.5V 0 50 100 150 200 250 300 350 400 450 500 Efficiency(η) 100.0 80.0 60.0 40.0 20.0 0.0 Vin=2.5V Vin=3.0V 0 50 100 150 200 250 300 350 400 450 500 7.Ripple VS. Output Current 8.Ripple VS. Output Current Ripple Voltage(mV) -251SM Ripple Voltage VS. Output Current 120 100 80 60 40 20 0 0 50 100 150 200 250 300 350 400 450 500 Ripple Voltage(mV) -331SM Ripple Voltage VS. Output Current 140 120 100 80 60 40 20 0 Vin=2.5V 0 50 100 150 200 250 300 350 400 450 500 9/16
9.Ripple VS. Output Current 10.Ino load VS. Input Voltage Ripple Voltage(mV) -401SM Ripple Voltage VS. Output Current 140 120 100 80 60 40 20 Vin=2.5V Vin=3.0V 0 0 50 100 150 200 250 300 350 400 450 500 Quiescent Current(Ino load) (ua) Quiescent Current(Ino load) VS. Input Voltage 40 35 30 25 20 15 10 5 0 0 0.5 1 1.5 2 2.5 3 3.5 Input Voltage(V) Vout=2.5V Vout=3.3V Vout=4.0V SOT-89-3 1000 mm 10/16
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SOT-89-5 1000 mm 12/16
SOT-23-3 3000 mm 13/16
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SOT-23-5 3000 mm 15/16
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