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| PQ6CU11X1APQ PQ6CU11X1APQ CMOS Step-up Chopper Regulator Features 1.High switching voltage :MAX.30V (capable of driving max 4LEDs in series connection) 2.Switching current: 250mA 3.High frequency PWM control :1.2MHz 4.High efficiency(efficiency85%) 5.Built-in overheat, overcurrent protection functions 6.Built-in soft start function 7.RoHS directive compliant Outline Dimensions ( 1.9) 6 5 4 (Unit:mm) C01 1 2 3 6-0.40.1 ( 0.95) ( 0.95) 1.10.2 Applications 1.Mobile phone 2.DSC 3.PDA Terminal 1.3M AX ( 0.3) 3.3M AX. ( 2 .9 T Y P. excluding remaining gate) 1.60.2 00.1 0.150.1 M 15 AX. 0.2M I N . 2.80.3 0.2M I N . ( Swith terminal (VSW) GND terminal Feed back terminal (FB) Control terminal (CTRL) OVP terminal (VO) VIN terminal(VIN) ) : Typical dimensions Product mass:(0.015g) Absolute Maximum Ratings Parameter Input voltage Output voltage Switching voltage Control voltage Feed back voltage Switching current Power dissipation Junction temperature Operating temperature Storage temperature Soldering temperature Symbol VIN VO VSW CTRL FB ISW Pd Tj Topr Tstg Tsol (Ta=25C) Rating 6 30 30 VIN 6 250 350 150 -40 to +85 -40 to +150 260(10s) Unit V V V V V mA mW C C C C Lead finish:Lead-free solder plating (Composition: Sn2Bi) Operating conditions Rating Parameter Symbol -40 to +125 Operating Junction temperature Tj Unit C Notice The content of data sheet is subject to change without prior notice. In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device. 1 Sheet No.: OP06059 PQ6CU11X1APQ Electrical Characteristics Parameter Input-output voltage range Overvoltage detecting level Overvoltage detecting hysteresis level Quiescent current Stand-by current Efficiency Symbol VIN OVP OVP(hys) I ISD VREF IFB fo DMAX IL RON ILEAK VC(ON) VC(OFF) ICTRL (Unless otherwise specified,condition shall be VIN=VCTRL=3.6V,VO=10V,IO=20mA,Ta=25C) Conditions MIN. 2.7 26 - TYP. - MAX. 5.5 30 Unit V V V mA A % mV nA MHz % mA A V V A 5pin 5pin Switching,IO0mA VCTRL0V 3 LEDs 28 2 0.8 0.1 90 95 30 1.2 86 1.6 1 104 100 1.4 Error amplifier Reference voltage FB pin bias current VIN3V DUTY=70%,Switching current peak ISW250mA VSW28V,VIN=VCTRL=0V 1 85 260 Oscillator Oscillation frequency Maximum duty 1.7 0.05 2.5 1 Power switch Overcurrent detection level On-resistance Leakage current 1 Control terminal ON-state voltage for control OFF-state voltage for control CTRL pin bias current L - - 0.4 50 Fig.1 Standard measuring circuit 22H D A VO 6 A Iq Isd 1 IL ILEAK IO 5 R2 105.3k A VIN CIN 2.2F A IFB 4 ICTRL 2 VC 3 CO 1F V R1 1k Vref ON/OFF control logic 4pin LOW HIG H OPE N Output OFF ON OFF L:VLP4612(TDK CO.,LTD.) D:MA2Z720(MATSUSHITA ELECTRIC INDUSTRIAL CO.,LTD) Fig.2 Power Dissipation vs.Ambient Temperature 400 Fig.3 Reference Voltage Fluctuation vs. Junction Temperature Reference voltage fluctuation VREF (%) 1.0 VIN=VCTRL=3.6V L=22H White LED:3LEDs IO=20mA Pd : Mounting PCB Power dissipation Pd (mW) 300 0.5 200 0 100 -0.5 -40 -25 0 0 25 50 75 85 100 125 150 -1.0 -50 -25 0 25 50 75 100 125 Ambient temperature Ta (C) Junction temperature Tj (C) Sheet No.: OP06059 2 PQ6CU11X1APQ Fig.4 Reference Voltage Fluctuation vs. Input voltage Reference voltage fluctuation VREF (%) 1.0 Fig.5 Efficiency vs. LED Current 100 95 Efficiency () 0.5 90 85 80 75 70 65 0 -0.5 -1.0 3 3.2 3.4 3.6 3.8 4 4.2 60 5 10 15 20 Input voltage VIN (V) LED current IO(mA) Fig.6 Efficiency vs. Input Voltage 100 95 2LED Fig.7 Oscillation Frequency Fluctuation vs. Junction Temperature Oscillation frequency fluctuation fO (%) 10 VIN=VCTRL=3.6V 3LEDs / 20mA CIN=2.2F CO=0.1F L=22H Efficiency () 90 85 80 75 70 65 60 3 3.2 3.4 3.6 3.8 4 4.2 4LEDs 3LEDs 5 0 -5 -10 -50 -25 0 25 50 75 100 125 Input voltage VIN(V) Junction temperature Tj (C) Fig.8 On-Resistance vs. Junction Temperature 5.0 4.5 Fig.9 ON/OFF-state Voltage for Control vs. Junction Temperature 1.0 ON/OFF-state voltage for control VC (V) 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 -25 0 25 50 VIN=3.6V 3LEDs / 5mA CIN=2.2F CO=0.1F L=22H On-resistance RON () 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -50 -25 0 25 50 VIN=VCTRL=3.6V VSW=3.6V ISW=250mA 75 100 125 75 100 125 Junction temperature Tj (C) Junction temperature Tj (C) Sheet No.: OP06059 3 PQ6CU11X1APQ Block Diagram L D VIN CIN VIN VSW Soft start circuit CTRL ON/OFF Circuit PWM CMP. VO Over voltage protection ERROR AMP 95mV CO FB Rset Control Circuit OSC GND Example of application 22H L D VSW VIN 6 CTRL CIN 2.2F 1 5 VO VIN 3.6V 4 2 GND 3 FB Rset 4.75 CO 0.1F IO 20mA ON/OFF Current-limit This product monitors the switch current at every cycle and limits the switch current not to exceed the overcurrent detection level. Please set the white LED current under the maximum LED current shown in the graph indicated below within the range of input voltage (VIN) you use. Fig.10 Use Range of White LED 140 Ta=25C VF=3.8V L=22H 2LED Maximum LED current (mA) 120 100 80 60 40 20 0 2.5 3LED 4LED 6LED 3 3.5 4 4.5 5 5.5 VIN(V) Sheet No.: OP06059 4 |
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