MD800/0 Datasheet PINOUT CONFIGURATION PIN Function Description Figure2.PinConfigurationofMD800/0(Topview) Pin # Name Function Description 4 CS 3 CPC

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1 MD800/0 Datasheet High performance primary side regulator (PSR) offline switch power supply (SMPS) controller PRODUCT DESCRIPTION MD80X is high performance primary sensing regulator (PSR) and monolithic switch power controller which is designed for small-power supply equipment with current mode control. Built-in accurate CV/CC control circuit, eliminates optocoupler, TL43 and its related loop devices. High integration design, a high performance power BJT and PFM controller and all kinds of protection circuits in one chip, to minimize the peripheral components to save the cost greatly. MD80X can be simply designed a typical flyback switch converter, the unique driving technology promotes the characteristics of withstand voltage and achieves excellent converting efficiency. FEATURES Built-in 700V@MD800; 80V@MD80 power BJT. PSR control, eliminates optocoupler and TL43 Accurate CV/CC control Hysteresis over-temperature protection (OTP) circuit Higher efficiency and meet Level 6 efficiency standards Output voltage protection (OVP/UVP) < 00 mw no-load consumption Auto-Restart function Ultra-low start-up current Good EMC characteristic allows the simple EMC circuit APPLICATIONS Intelligent mobile phone/small size tablet computer Digital cameras and other small digital products Power adapters for network products etc. RCC solutions Replace. APPLICATION DIAGRAM MD800/0 MIX-DESIGNSemiconductorLtd@203 FigurePackgediagram Output Power Table P/N Page MD800 MD80 Package S S S Packge(SOIC-7 ) 90Vac-265Vac Adapter OpenFrame 4W 5W 5W 5.5W Notes:. Continuous maximum output power is tested in typical non-ventilated closed adapter measured at environment temperature The biggest actual continuous output power is tested in the condition of that peripheral circuit is designed properly and enough space for heat dissipation. Package: S: SOP - 7; P: DIP-8 Output CC/CV VI Characteristic 0-Mar-203@Rve.02 MIX-PD-55787

2 MD800/0 Datasheet PINOUT CONFIGURATION PIN Function Description Figure2.PinConfigurationofMD800/0(Topview) Pin # Name Function Description 4 CS 3 CPC VCC 2 FB 5-6 HV Conntect external primary current sensing resistor RCS, the controller can detect the primary current through the external sens resistor. When the voltage on the resistor achieves the maximum value, the internal power BJT will be turn off immediately. to connect with a 00+nf capacitor, the pin will become output cable drop compensation pin. Power supplying pin of the controller, In order to let the controller gain more stable supply voltage, the external filter capacitor must use low equivalent impedance (Low ESR) of the electrolytic capacitor. Output feedback pin, to detect the output condition through the auxiliary winding voltage of the transformer. To connect the collector of internal power BJT 8 GND The referring grounding pin of the controller MIX-DESIGNSemiconductorLtd@203 Page2 0-Mar-203@Rve.02 MIX-PD-55787

3 MD800/0 Datasheet FUNCTIONAL BlOCK DIAGRAM Figure3.FunctionalblockdiagramofMD800/0 Page3 MIX-PD-55787

4 MD800/0 Datasheet ABSOLUTE MAXIMUM RATINGS HVPINMaximumVoltage Voltage ICPeakCurrent: MD800 MD80-0.3~700V 350mA VCCPinVoltage 8.6V FBPinVoltage OthersPinVoltage OperatingTemperature(Tj) ELECTRICAL CHARACTERISTICS Parameter VDD UVLO Star-up Voltage Shut down Star-up Current Operating Current Max. Operating Voltage CURRENT SENSE SECTION Maximum Current to CS PIN Current Sense Threshold Voltage Leading Edge Blanking FEEDBACK INPUT SECTION FBReferenceVoltage InputResistanceofFBPin FeedbackThresholdVoltage POWER BJT SECTION Collector-emitter Saturation Voltage Collector-Base Voltage ShutdownTemperature TemperatureHysteresis t 280mA 7V Vcc+0.3V 0~+50 StorageTemperature LeadTemperature ESD(HumanBodyModel) -55~ /0S 2000V Notes:.AllvoltagesreferredtoICGND(TA=25 ), 2.Durationnotexceed2msec. 3.Instantmaximumratingsspecifiedwillnotcausepermanentdamage totheproduct,whilelongmaximumratingsspecifiedappliedwilldo andmayaffectproductreliability. Symbol Conditions Min Type Max V CC-ON V CC-OFF I Star I CC Staticcurrent CC V CC-MAX V V Unit I CS ua V CS 50 mv T LEB Ic=mA ns V REF-FB V R FB MΩ V FB-MAX 5 V V CeO Io=.0mA 0.3 V MD800 V CBO 700 V MD80 V CBO 80 V OVER TEMPERATURE PROTECTION(OTP) T SHDN T HYS MIX-DESIGNSemiconductorLtd@203 Page4 V ua 0-Mar-203@Rve.02 MIX-PD-55787

5 MD800/0 Datasheet FUNCTION DESCRIPTION MD80X is specially designed for the charger/adapter of small power digital products. To use PSR control technology to provide accurate (CV/CC) characteristics. The controller works in PFM mode and the switching frequency can be automaticially adjusted as per the load. Optimized driving circuit greatly promotes withstand voltage of the power BJT and minimizes the switching loss, so as to make the circuit have excellent converting efficiency. CONSTANT VOLTAGE(CV) OPERATION When the circuit is operates in CV area, FB will detect the output voltage when the power BJT turn-off through the sensing voltage by auxiliary winding of the transformer, to make the output voltage stablized in the fixed value. In the turn-on period of the output rectifier diode D,it's given the output winding voltage and auxiliary winding voltage as follows: Vaux : auxiliary winding voltage;nb:subsidiary winding turns;ns: output winding turns; Vd:forward voltage drop of output rectifier diode FB will test the auxiliary winding voltage while the power BJT off-time to regulate the output voltage. In order to avoid the peak influence happens in power BJT turn-off resulting from the leakage inductance of the transformer, and considering the accuracy of sampling voltage, FB captures the auxiliary winding detection sampling points as below: Figure 4.Auxiliary Voltage Wavaform CONSTANT CURRENT(CC ) OPETATION MD80X CC control circuit is requested the converter oprating in DCM. In CC operation mode, the CC control circuit will fix the proportion p between the Tons and Toffs produced by diode rectifier D. When Tons time, the primary energy of the transformer will be converted to the secondary winding, via the rectifier diode then charge the output capacitor and supply load simultaneously. MIX-DESIGNSemiconductorLtd@203 Page5 When Toffs, the primary coil stores the energy, the output filter capacitor makes load discharge. In CC operation area, MD80X switch frequency will follow the output load direct ratio control detected by FB Voltage. Figure 5. Secondary Current Wavaform The secondary rectifier diode peak current is determinated by the peak current of primary-side inductance which also affects the output current. The corresponding relation between the primary peak current and the secondary peak current is as follows. Ipk: primary peak current ; NP: primary winding turns; NS: secondary winding turns; Ipks:secondary peak current And primary inductance peak current is determinated by Pin 4 to RCS resistance, the primary inductance peak current and RCS resistance are in inverse proportion, so only need to adjust CS resistance to achieve different output currents. Output current Iout and primary current are given by: Iout: Output current; Tons: secondary rectifier diode on-time; Toffs: secondary rectifier diode off-time OUTPUT CABLE COMPENSATION MD80X built-in output cable drop compensation circuit. When it outputs different loads, the cable drop compensation circuit provides cable drop voltage compensation which is in fixed proportion with output voltage. The internal circuit will generate one cable drop compensation signal once have one 00nF capacitor connected with external Pin CPC. PROTECTIVE FUNCTIONS In order to guarantee a safe and reliable circuit to all occasions, MD80X built-in rich protection circuits, such as OCP,OVP, FB open-loop protection etc as intergration. Once abnormality, it will come into protection mode. 0-Mar-203@Rve.02 MIX-PD-55787

6 MD800/0 Datasheet TYPICAL APPLICATION CIRCUIT CN 00~240Vac R - + D~D4 C C4 R2 R3 VCC ST-CPC CPC GND C2 HV FB CS UMD800 C3 D5 D6 R4 Figure6.TypicalapplicationofMD800forRCCreplace(Output:5V/800mA) BOM LIST 5V800mA Charger With MD800 Position Description Q'ty Position Description Q'ty D-D5 N4007A/KVDO-4 5 R4.5R206±% D6 FR07A/KVDO-4 R5 30K0805±% D7 SB2403A/40VDO-5 R6 33K0805±% C 4.7uF/400V±20%8*2 R7 K0805±5% C3 02KV±0% U MD800SGB-TRSOIC-7 C2 0uF/6V±20%5* T EE35+5Transformer 5 C4 0425V±0%SMD C5 470uF/0V±20%6*2LowESR C8 02/00V0805 R 0R/W±5% R2 3M/206±5% R3 200K/206±5% MIX-DESIGNSemiconductorLtd@203 Page6 R6 R5 T D7 C5 Vo+ R R7 Vo Mar-203@Rve.02 MIX-PD-55787

7 MD800/0 Datasheet THERMAL IMPEDANCE S (SOC-7) Packge Impedance(Reference only) (θja)...00 /W (θjc) /W Notes:. Pin5, 6 Soldered to 2 oz. (60 g/m2) copper clad,as large area as possible. 2. Measured on pin 5 6 close to plastic interface(power BJT Collector) PART ORDERING INFORMATION Package S(SOP-7) MD8XX S X G -TR (Circuit Serial Type) Part Number 00MD800 0MD80 Package Identifier SPlasticSOP-7 PPlasticDIP-8 TPlasticSOT-23 Cable compesation A: 0%; B: 4%, C: 6%; D: 9% Package Material Green: RoHS Compliant Tape & Reel and Other Options Blank Tube TR Tape & Reel Part Number Marking ID on Body Packing Type Minimum Pack MD80XSXG-TR MD800/0 Tape&Reel 4000PCS MD80XSXG-TR MD800/0 Tape&Reel 4000PCS MD80XSXG-TR MIX-DESIGNSemiconductorLtd@203 MD800/0 Page7 Tube 90PCS/Tube 0-Mar-203@Rve.02 MIX-PD-55787

8 MD800/0 Datasheet MECHANICAL DIMENSIONS S-Package (SOIC-7) Page8 MIX-PD-55787

9 MD800/0 Datasheet CONTACT DETAILS MIX-DESIGN SEMICONDUCTOR TECHNOLOGY LIMITED 8/F,Block B,Building 2,Creative Industry park, No.328 Xinghu street, Suzhou industrial park, Suzhou city, Jiangsu Provice, China. Post:2543 Tel: (52) Fax:(52) Web: DISCLAIMER MIX-DESIGN semiconductor technology limited reserves the right to make changes without further notice to any products or specificationsherein.mix-design semiconductor technology limited does not assume any responsibility for use of any its products for anyparticular purpose, nor does MIX-DESIGN semiconductor technology limited assume any liability arising out of the application or useof any its products or circuits. MIX-DESIGN semiconductor technology limited does not convey any license under its patent rights or other rights nor the rights of others.to obtain the most current product information available visit: or contact us at the address shown above. VERSION INFORMATIONS Version Description Rev.0 New Release 2,Oct,202 Rev.02 Change the form,add. application informations 0,Mar,203 SALES SUPPORT LOCATIONS Page9 Date MIX-PD-55787

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