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| CAT. No. TU81 3.3V/5V Stepping Down DC to DC Converter Power IC MD1320N Converter IC E f f ic ie n c y pping Down h ontrol Ste e r a n d H ig in compact 1.5A PWM C utput Pow nction ig h O a c h ie v e s H erformance and high fu It igh p integrating h package Summary MD1320N is a non-isolated, PWM control stepping down DC to DC converter power IC including main MOSFET switch and fly wheel SBD inside. It has maximum 7.5W ( 5V, 1.5A) output power and high efficiency in wide range. It also has wide input voltage rangee ( 8 - 30V ) and it is possible to get 3.3V or 5V output voltage by selecting terminal. Its package is new compact surface mount type (SSOP-32) and it is possible to design DC to DC converter with fewer external components and smaller mounting area. Feature Input Voltage range 8-30V Maximum Output Current 1.5A Included main MOSFET switch and fly wheel SBD Output 3.3V / 5V (Selective with output switching terminal) High Efficiency typ. 91% (at:Vin=8V, Vout=5V, Iout=0.5A) Fixed Frequency 250kHz PWM Control Over Current Protection Function Low Input Voltage Protection Function(UVLO) Thermal Shut Down Function Block Diagram Application Example Pin Layout S/S : F/B OCL - : OCL+ : GND : N/C : Vcc : N/C : Vboot : N/C : N/C : VOUT : VOUT : VOUT : VOUT : N/C : P.GND : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 : : : : : : : : : : : : : : : : ampN/C ampOUT N/C Vref 3.3V/5V GND VB N/C VG N/C VDD VDD VDD VDD N/C Absolute Maximum Ratings ( Ta = 25 Item Line voltage Output MOS input voltage Output current ( A V E ) Output current ( P E A K ) Storage temperature Junction temperature ) Symbol VIN VDD IOUTave IOUTpeak Tstg Tj Rating 32 32 1.5 2 -40~150 150 Unit V V A A Recommended Operation Conditions Item Input voltage Operation temperature Recommerded Value 8~30 -10~80 Unit V Electrical Characteristics ( Ta = 25 Item HighsideMOS Drain-source breakdown voltage HighsideMOS Drain interruption current HighsideMOS Drain-source ON resistance HighsideMOS Source-drain Di forward voltage LowSideSBD Peak reverse voltage LowSideSBD Forward voltage LowSideSBD Reverse current Start voltage Stop voltage Start-stop voltage hysteresis Current consumption BOOT terminal voltage Internal reference voltage Internal oscillation frequency Overcurrent threshold voltage SoftStart terminal current "H" CHG terminal input voltage "L" CHG terminal input voltage Overcurrent protection operating temperature Symbol Vdss Idss Ron VSD VRM VF IR Vcc_start Vcc_stop Vcc_hys Icc Vboot Vref fosc Vth_OCL IS/S VCHGH VCHGL T_TSD ) Condition ID= 1mA,VGS= 0V VDS= 30V,VGS= 0V ID= 1.2A,VGS= 4V IS= 1.2A,VDS= 0V - MIN 32 - TYP - MAX - Unit V - 10 250 1.5 - - 140 - - V V V mA V V V mA V V kHz V V V 40 - - IF= 1.2A VR= VRM - - 0.55 2 8 7.5 - - - 7 6.5 - Vcc= 8V~30V Vcc= 8V~30V Vcc= 8V~30V Vcc= 24V Vcc= 24V Vcc= 24V - 6 4.75 212.5 0.162 -20 4.5 GND - 7.5 7 0.5 8 6.5 5 250 0.19 -12.5 - 10 7 5.25 287.5 0.218 -5 Vref 0.5 - 150 1 ShindengenAmerica,Inc. ) 1 () ShindengenUKLtd. 44 ( GermanRepresentativeOffice ( ( - 4 1- 1- H W 4 P - ELCTRIMFG.O,D SHINDENGEN ( () ( ))-211-4986499 ( 4H4 8) - ) |
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