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| Low Power-Loss Voltage Regulators PQ7VZ5 PQ7VZ5 Variable Output, Compact Surface Mount Type Low Power-Loss Voltage Regulators s Features Low power-loss (Dropout voltage:MAX. 0.5V) Variable output type (1.5V to 7V) Surface mount type package (equivalent to EIAJ SC-63) Output current:MAX.0.5A Low dissipation current at OFF-state (Iqs:MAX.5A) Built-in ON/OFF control function Reference voltage precision:2.0% Tape packaged type is also available. (Reel:3 000pcs.) s Outline Dimensions 6.6MAX 5.20.5 3 2.30.5 (0.5) (Unit : mm) 9.7MAX 7VZ5 5.50.5 (1.7) 0.5 +0.2 -0.1 (0.5) 12345 3 Specific IC 5 4 (0to0.25) 2.5MIN s Applications Personal computers Word processors Printers Camcoders Personal Information Tools(PDA) Internal connection diagram 1 2 1 VIN 2 ON/OFF control 3 VOUT 4 OADJ 5 GND Heat sink is common to 3 (VOUT) s Absolute Maximum Ratings Parameter *1 *1 *1 (Ta=25C) Symbol VIN VC VADJ IO PD Tj Topr Tstg Tsol Rating 10 10 7 0.5 8 150 -20 to +80 -40 to +150 260 (For 10s) Unit V V V A W C C C C *2 *3 Input voltage ON/OFF control terminal voltage Output adjustment terminal voltage Output current Power dissipation Junction temperature Operating temperature Storage temperature Soldering temperature All are open except GND and applicable terminals. PD:With infinite heat sink. Overheat protection may operate at 125= * Please refer to the chapter" Handling Precautions ". " 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 version of the device specification sheets before using any SHARP's device. " (0.9) 4-(1.27) Low Power-Loss Voltage Regulators PQ7VZ5 s Electrical Characteristics Parameter (Unless otherwise specified, conditions shall be VIN=5V, VO=3V(R1=1k), Io=0.3A, VC=2.7V, Ta=25C) Symbol VIN VO RegL RegI RR Vi-o Vref TCVref VC (ON) IC (ON) VC (OFF) IC (OFF) Iq Iqs Condition IO=5mA to 0.5A VIN=4 to 10V, IO=5mA Refer to Fig. 2 VIN=3.4, IO=0.3A IO=5mA, Tj=0 to 125C *4 Input voltage Output voltage variable range Load regulation Line regulation Ripple rejection Dropout voltage Reference voltage Temperature coefficient of reference voltage ON-state voltage for control ON-state current for control OFF-state voltage for control OFF-state current for control Quiescent current Output OFF-state consumption current *4 IC=0A VC=0.4V, IC=0A IC=0A VC=0.4V NIN. 3.4 1.5 45 1.225 2.0 - TYP. 0.2 0.2 60 1.25 1.0 4 - MAX. 10.0 7.0 2.0 2.5 0.5 1.275 200 0.8 2 7 5 Unit V V % % dB V V % V A V A mA A In case of opening control terminal 2 , output voltage turns off. Fig.1 VIN Test Circuit 0.33F 1 q 3 q R2 q VC 2 5 q 4 q Iq 1k R1 V + Fig.2 47F VO Test Circuit for Ripple Rejection 0.33F 1 q 2 q VC 3 q R2 4 q R1 1k 47F 47F + A IO ~ ei VIN IO + V RL 5 q V eo ~ RL A A R2 R2 VO=Vref X 1+- = 1.25 X 1+R1 R1 [R1=390,Vref = 1.25V] f=120Hz (sine wave) ei=0.5Vrms IO=0.3A RR=20 log (ei/eo) VIN=5V VO=3V (R1=1k) Fig.3 10 Power Dissipation vs. Ambient Temperature PD:With infinite heat sink PD Fig.4 4 Overcurrent Protection Characteristics(Typical Value) Ta =25C VO=3V(R1=1k,R2=1.4k) Power dissipation PD (W) Output voltage VO (V) 3 Vi-O =0.5V 2 Vi-O =1V Vi-O =5V Vi-O =2V 5 1 0 50 80 100 150 Ambient temperature Ta (C) Note) Oblique line portion:Overheat protection may operate in this area. 0 -20 0 0 0.5 1.0 1.5 Output current IO (A) 2.0 Low Power-Loss Voltage Regulators Fig.5 8 7 Output voltage VO (V) PQ7VZ5 Fig.6 Reference voltage deviation Vref (mV) 10 Output Voltage Adjustment Characteristics R1=1k Reference Voltage Deviation vs. Junction Temperature(Typical Value) 6 5 4 3 2 1 0 0.1 1 10 R2 (k) 100 1000 VIN=5V 8 VO=3V(R1=1k,R2=1.4k) 6 IO=0.3A 4 2 0 -2 -4 -6 -8 -10 -25 0 25 50 75 100 Junction temperature Tj (C) 125 Fig.7 4 Output Voltage vs. Input Voltage Ta =25C VO=3V(R1=1k,R2=1.4k) RL=1.2 RL= RL=0.6 2 Fig.8 30 Circuit operating current IBIAS (mA) Circuit Operating Current vs. Input Voltage Ta =25C VO=3V (R1=1k, R2=1.4k) Output voltage VO (V) 3 RL=6 RL=10 20 10 RL= 1 0 0 1 2 3 4 5 Input voltage VIN (V) 6 7 0 0 1 2 3 4 5 Input voltage VIN (V) 6 7 Fig.9 0.5 0.4 0.3 0.2 Dropout Voltage vs. Junction Temperature(Typical Value) VIN =0.95VO VO=3V(R1=1k,R2=1.4k) Fig.10 ON-state Voltage for Control vs. Junction Temperature(Typical Value) ON-state voltage for control VC(ON) (V) 3.0 VIN =5V VO=3V(R1=1k,R2=1.4k) 2.5 IO=0.3A 2.0 1.5 1.0 0.5 0 -25 Dropout voltage Vi-O (V) IO=0.5A IO=0.4A IO=0.3A IO=0.2A IO=0.1A 0 25 50 75 100 Junction temperature Tj (C) 125 0.1 0 -25 0 25 50 75 100 Junction temperature Tj (C) 125 Low Power-Loss Voltage Regulators Fig.11 Quiescent Current vs. Junction Temperature(Typical Value) 5 Quiescent current Iq (mA) VIN =5V VO=3V(R1=1k,R2=1.4k) 4 IO =0.3A 3 PQ7VZ5 Fig.12 Ripple Rejection vs. Input Ripple Frequency 70 Ripple rejection RR (dB) 60 50 40 30 20 VIN=5V VO=3V(R1=1k,R2=1.4k) 10 Io=0.3A ei=0.5Vrms 0 0.1 1 10 Input ripple frequency f (kHz) 2 1 0 -25 0 25 50 75 100 Junction temperature Tj (C) 125 100 Fig.13 Output Peak Current vs. Junction Temperature(Typical Value) 2.0 Output peak current IOP (A) VIN=5V VO=3V(R1=1k,R2=1.4k) VIN-VO =5V 2V 1.0 1V 0.5V 0.5 IOP:Output current when output voltage is 95% in comparison with the initial value 0 -25 0 25 50 75 100 Junction temperature Tj (C) 1.5 125 Fig.14 Power Dissipation vs. Ambient Temperature(Typical Value) 3 Cu area 740mm2 2 PWB Power dissipation PD (W) Cu area 180mm2 Cu area 100mm2 PWB Cu 1 Cu area 70mm Cu area 36mm2 0 -20 2 Material : Glass-cloth epoxy resin Size : 50X50X1.6mm 3 Cu thickness : 35m 60 80 0 20 40 Ambient temperature Ta (C) 100 Low Power-Loss Voltage Regulators s Model Line-ups for Tape-packaged Products Sleeve-packaged products High-precision output type Standard type PQ7VZ5 - PQ7VZ5 Output current 0.5A output Tape-packaged products Standard type High-precision output type PQ7VZ5U s Adjustment of Output Voltage Output voltage is able to be set from 1.5V to 7V when resistors R1, R2 are attached to , , terminals. As for the external resistors to set output voltage, refer to the following figure or Fig.5. 3 R2 + 5 Vref 4 R1 VO VO=Vref X (1+R2/R1) =1.25X (1+R2/1000) (R1=1k,Vref =1.25V) |
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