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PQ7VZ5 Datasheet(PDF) 2 Page - Sharp Corporation |
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PQ7VZ5 Datasheet(HTML) 2 Page - Sharp Corporation |
2 / 5 page Low Power-Loss Voltage Regulators PQ7VZ5 Fig.4 Overcurrent Protection Characteristics(Typical Value) Parameter Symbol Condition 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 Unit MAX. TYP. NIN. 3.4 1.5 - - 45 - 1.225 - 2.0 - - - - - - - 0.2 0.2 60 - 1.25 ±1.0 - - - - 4 - 10.0 7.0 2.0 2.5 - 0.5 1.275 - - 200 0.8 2 7 5 s Electrical Characteristics *4 In case of opening control terminal 2 , output voltage turns off. (Unless otherwise specified, conditions shall be VIN=5V, VO=3V(R1=1k Ω), Io=0.3A, VC=2.7V, Ta=25˚C) VIN VO RegL RegI RR Vi-o Vref TCVref VC (ON) IC (ON) VC (OFF) IC (OFF) Iq Iqs - - 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 125˚C *4 - IC=0A VC=0.4V, IC=0A IC=0A VC=0.4V V V % % dB V V % V µA V µA mA µA Fig.1 Test Circuit Fig.3 Power Dissipation vs. Ambient Temperature 0 -20 0 PD PD:With infinite heat sink 80 50 100 150 5 10 Ambient temperature Ta (˚C) 0 0.5 1.0 1.5 2.0 4 3 2 1 0 Output current IO (A) Vi-O =5V Vi-O =2V Vi-O =0.5V Ta =25˚C VO=3V(R1=1k Ω,R2=1.4kΩ) Vi-O =1V Note) Oblique line portion:Overheat protection may operate in this area. Fig.2 Test Circuit for Ripple Rejection ~ V ~ q 5 q 3 q 1 q 2 q 4 A A V V A VIN VC Iq 1k Ω IO VO VC RL 47 µF 0.33 µF 47 µF + R2 R1 q 5 q 3 q 1 q 2 q 4 VIN ei eo 1k Ω IO RL 0.33 µF 47 µF + R2 R1 + VO=Vref X 1+- 1.25 X 1+- R2 R1 R2 R1 [R1=390 Ω,Vref 1.25V] f=120Hz (sine wave) ei=0.5Vrms IO=0.3A RR=20 log (ei/eo) VIN=5V VO=3V (R1=1k Ω) = = |
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