Chopper Regulators PQ1CF1 PQ1CF1 TO-220 Package Chopper Regulator ■ Outline Dimensions (Unit : mm) 4.5±0.2 10.2MAX φ3.2±0.1 16.4±0.7 (1.5) ■ Applications 5-0.8±0.1 ¡Facsimiles ¡Printers ¡Switching power supplies ¡Personal computers 2.0 PQ1CF1 (0.5) 3.2±0.5 4-(1.7) 4.4MIN 7.4±0.2 (24.6) 2.8±0.2 5.0±0.5 ¡Maximum switching current : 3.5A ¡With ON/OFF control function ¡Built-in oscillation circuit (oscillation frequency : TYP.70kHz) ¡Built-in overheat protection, overcurrent protection function ¡Variable output voltage (1.26 to 35V /-1.26 to -30V) [Possible to choose step down output/inversing output according to external connection circuit] 3.6±0.2 ■ Features (5.0) 8.2±0.7 1● ● 2● 3● 4● 5 1 VIN 2 VOUT 3 COM 4 OADJ 5 VC ■ Absolute Maximum Ratings Parameter *1 *2 *3 *4 *1 *2 *3 *4 Input voltage Error input voltage Input-output voltage Output-COM voltage ON/OFF control voltage Switching current terminal voltage Power dissipation (No heat sink) Power dissipation (With infinite heat sink) Junction temperature Operating temperature Storage temperature Soldering temperature Voltage between VIN terminal and COM terminal. Voltage between VOUT terminal and COM terminal. Voltage between VC terminal and COM terminal. Overheat protection may operate at 125=<Tj=<150˚C (Ta=25˚C) Symbol VIN VADJ Vi-o VOUT VC ISW PD1 PD2 Tj Topr Tstg Tsol Rating 40 7 41 -1 -0.3 to 40 3.5 1.5 15 150 -20 to +80 -40 to +150 260 (For 10s) Unit V V V V V A W W ˚C ˚C ˚C ˚C · 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. ” Chopper Regulators PQ1CF1 ■ Electrical Characteristics (Unless otherwise specified, conditions shall be VIN=12V, Io=0.5A, VO=5V, Ta=25˚C) Parameter Output saturation voltage Reference voltage Temperature coefficient in reference voltage Load regulation Line regulation Efficiency Oscillation frequency Oscillation frequency temperature fluctuation Maximum duty Overcurrent detecting level Charge current1 Charge current2 Symbol VSAT Vref ∆Vref |RegL| |RegI| η fo ∆fo DMAX IL ICHG1 ICHG2 VTHL VTHH VTH(ON) ISD IqS Input threshold voltage On threshold voltage Stand-by current Output OFF-state consumption current Conditions ISW=3A Tj=0 to 125˚C IO=0.5 to 3A VIN=8 to 35V IO=3A Tj=0 to 125˚C 4terminal is open 24terminal is open, 5terminal 24terminal is open, 5terminal=0.7V Duty=0%, 4terminal=0V, 5terminal Duty=DMAX, 4terminal is open,5terminal 4terminal=0V, 5terminal VIN=40V, 5terminal=0V VIN=40V, 5terminal=0.7V MIN. 1.235 60 90 3.9 -50 -150 0.75 1.55 0.5 - TYP. 1.4 1.26 ±0.6 0.2 0.6 80 70 ±5 5.1 -30 -100 0.9 1.8 0.6 140 8 MAX. 1.8 1.285 1.5 2.5 80 6.3 -10 -50 1.2 2.05 0.7 400 16 ■ Block Diagram 2 VOUT 1 VIN Voltage regulator circuit ON/OFF circuit Soft start ↓ PWM COMP. Overcurrent detecting circuit F/F Oscillator + - Q R S 4 OADJ ERROR AMP. + - Vref Overheat detecting circuit 3 COM ISD IQS 1 ● 2 ● L 90µH IO VO PQ1CF1 A + VIN CIN 220µF 5 ● 3 ● 0.068µF R2 5.1kΩ D R1 1kΩ + CO 1000µF Power dissipation PD (W) 4 ● ,, ,, ,, ,, Power Dissipation vs. Ambient Temperature 20 Test Circuit Load Fig.1 Fig.2 5 VC PD1 :No heat sink PD2 :With infinite heat sink PD2 15 10 5 L : HK-12S120-9000R (made by Toho Co.) D : ERC80-004 (made by Fuji electronics Co.) PD1 0 -20 0 20 40 60 80 100 Ambient temperature Ta (˚C) Note) Oblique line portion : Overheat protection may operate in this area. Unit V V % % % % kHz % % A µA µA V V V µA mA Chopper Regulators PQ1CF1 ■ Step Down Type Circuit Diagram (5V output) L 90µH VIN 8 to 35V 2 ● PQ1CF1 5 ● + 3 ● RC CIN 5.1kΩ 220µF CC 0.068µF R2 3kΩ D R1 1kΩ VO=5V + CO 1000µF Load 4 ● 1 ● ON/OFF control ■ Polarity Inversion Type Circuit Diagram (-5V output) 1 ● VIN 5 to 30V 2 ● PQ1CF1 5 ● 3 ● RC CIN 5.1kΩ 220µF CC 0.068µF + L 65µH R2 3kΩ D R1 1kΩ + CO 2200µF Load 4 ● VO=-5V ON/OFF control