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| Low Power-Loss Voltage Regulators PQ3DF53 PQ3DF53 3.3V Output, High Output Current (5A) Type Low Power-loss Voltage Regulator s Features TO-3P package Low power-loss (Dropout voltage : MAX. 0.5V at Io=5A) 3.3V output High output current (5A) High-precision output voltage type (Output voltage precision : 2.5%) Built-in ON/OFF cotrol function Built-in overcurrent protection, overheat protection function s Outline Dimensions (Unit : mm) 17.0MAX 6 4.50.2 2.00.2 PQ3DF53 39.0MAX 190.5 50.2 (1.4) Power supplies for various electronic equipment such as personal computers 4-(2.54) 12345 17.0MIN 3.7MAX s Applications (0.6) 5-0.80.2 Internal connection diagram 1 IC chip 2 Controller 4 Reference Comparator voltage 3 1 DC input (VIN) 26DC output (VO) 3 GND 4 ON/OFF control terminal (VC) 5 NC s Absolute Maximum Ratings Parameter *1 *1 (Ta=25C) Symbol VIN VC IO PD1 PD2 Tj Topr Tstg Tsol Rating Unit 10 V 10 V 5.0 A 2.2 W 60 W 150 C -20 to + 80 C -40 to +150 C 260 (For 10s) C * Please refer to the chapter" Handling Precautions ". *2 Input voltage ON/OFF control terminal voltage Output current Power dissipation (No heat sink) Power dissipation (With infinite heat sink) Junction temperature Operating temperature Storage temperature Soldering temperature *1 *2 All are open except GND and applicable terminals. Overheat protection may operate at 125= Low Power-Loss Voltage Regulators s Electrical Characteristics Parameter Output voltage Load regulation Line regulation Temperature coefficient of output voltage Ripple rejection Dropout voltage ON-state voltage for control ON-state current for control OFF-state voltage for control OFF-state current for control Quiescent current Symbol VO RegL RegI TCVO RR Vi-o VC (ON) IC (ON) VC (OFF) IC (OFF) Iq PQ3DF53 (Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A Ta=25C) Conditions IO=5mA to 5.0A VIN=4 to 10V Tj=0 to 125C *3, IO=5.0A VC=2.7V VC=0.4V IO=0A MIN. 3.218 45 2.0 TYP. 3.3 0.5 0.5 0.02 55 MAX. 3.382 2.0 2.5 0.5 20 0.8 -0.4 17 Unit V % % %/C dB V V A V mA mA *4 *3 *4 Input voltage shall be the value when output voltage is 95% in comparison with the initial value. In case of opening control terminal 4, output voltage turns on. Fig.1 Test Circuit Fig.2 Test Circuit for Ripple Rejection VIN 1 q 5 q 3 q 0.33F 2 q 4 q VC 47F VO 1 q 2 q 4 q 3 q 47F + IO + A + IO ~ ei 5 q 0.33F A Iq IC V RL VIN RL V eo ~ A f=120Hz (sine wave) ei=0.5Vrms VIN=5V IO=0.5A RR=20 log (ei/eo) Fig.3 60 50 40 30 20 10 Power Dissipation vs. Ambient Temperature PD2 Fig.4 100 Relative output voltage (%) Overcurrent Protection Characteristics (Typical Value) Power dissipation PD (W) 80 60 40 PD1 :No heat sink PD2 :With infinite heat sink 20 0 PD1 0 -20 0 20 40 60 80 Ambient temperature Ta (C) Oblique line portion:Overheat protection may operate in this area. 0 2 4 6 8 10 Output current IO (A) 12 Note) Low Power-Loss Voltage Regulators Fig.5 20 PQ3DF53 Fig.6 4 Output Voltage Deviation vs. Junction Temperature 15 10 5 0 -5 VIN=5V IO=2.5A Output Voltage vs. Input Voltage Ta =25C Output voltage deviation VO (mV) Output voltage VO (V) 3 RL=1.32 RL= RL=0.66 2 1 -10 -15 -25 0 25 50 75 100 Junction temperature Tj (C) 125 0 0 1 2 3 4 Input voltage VIN (V) 5 Fig.7 Circuit operating current IBIAS (mA) Circuit Operating Current vs. Input Voltage Ta =25C Fig.8 0.5 0.4 0.3 0.2 Dropout Voltage vs. Junction Temperature VIN =Input voltage when output voltage is 95% in comparison with the initial value IO=5A 100 RL=0.66 RL=1.32 Dropout voltage Vi-O (V) 0.1 0 -25 RL= 0 0 1 2 3 4 Input voltage VIN (V) 5 0 25 50 75 100 Junction temperature Tj (C) 125 Fig.9 20 Quiescent current Iq (mA) Quiescent Current vs. Junction Temperature Fig.10 Ripple Rejection vs. Input Ripple Frequency 100 80 14 12 10 8 6 4 2 0 -25 0 25 50 75 100 Junction temperature Tj (C) 125 Ripple rejection RR (dB) VIN =5V 18 IO =0A 16 60 40 VIN=5V 20 Io=0.5A ei=0.5Vrms, Ta =25C 0 0.1 1 10 Input ripple frequency f (kHz) 100 |
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