MC1108/09 Datasheet PRODUCT DESCRIPTION FEATURES APPLICATIONS APPLICATION DIAGRAM. S Packge(SOP-7 )

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1 PRODUCT DESCRIPTION MC0X 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. MC0X can be simply designed a typical flyback switch converter, the unique driving technology promotes the characteristics of withstand voltage g and achieves excellent converting g efficiency. y FEATURES Built-in 70V 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) < 75 mw no-load (5* rating) Auto-Restart function Ultra-low start-up current Quasi-resonant operation Line under voltage protection(luvp) Good EMC characteristic allows the simple EMC circuit Figure Packge diagram Output Power Table P/N Packge S Packge(SOP-7 ) 90Vac-265Vac Adapter Open Frame APPLICATIONS Intelligent mobile phone/small size tablet computer Digital cameras and other small digital products Power adapters for network products etc. MC08 S 0W 2W MC09 S 2W 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 APPLICATION DIAGRAM MC08/09 Output CC/CV VI Characteristic Page

2 PINOUT CONFIGURATION MC08/09 Figure 2. Pin Configuration of MC08/09 (Top view) PIN Function Description Pin # Name Function Description VCC 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. 2 FB Output feedback pin, to detect the output condition through the auxiliary winding voltage of the transformer. 3 CPC to connect with a 0+nf capacitor, the pin will become output cable drop compensation pin. 4 CS 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. 5,6 HV To connect the collector of internal power BJT 7 NC Not connected (Only for D Packge) 8 GND The referring grounding pin of the controller Page 2

3 FUNCTIONAL BlOCK DIAGRAM Figure 3.Functional block diagram of MC08/09 Page 3

4 ABSOLUTE MAXIMUM RATINGS HV PIN Maximum Voltage -0.3~700V Storage Temperature -55~+50 MC08 400mA Lead Temperature +260 /0S IC Peak Current: MC09 800mA ESD(Human Body Model) 2000V VCC Pin Voltage 9V FB Pin Voltage 7.5V Others Pin Voltage Operating Temperature (Tj) Vcc + 0.3V 0~ +50 Notes:.All voltages referred to IC GND (TA=25 ), 2. Duration not exceed 2 msec. 3.Instant maximum ratings specified will not cause permanent damage to the product, while long maximum ratings specified applied will do and may affect product reliability. ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions Min Type Max Unit VDD UVLO Star-up Voltage Shut down Star-up Current Operating Current V DD-ON DD ON V DD-OFF I Star I DD Static current V ua Max. Operating Voltage V DD-MAX V V CURRENT SENSE SECTION FB Reference Voltage Current Sense Threshold Voltage Leading Edge Blanking I CS ua V CS 500 mv T LEB Ic=mA ns FEEDBACK INPUT SECTION FB Reference Voltage Input Resistance of FB Pin Feedback Threshold Voltage V REF-FB V R FB MΩ V FB-MAX 5 V POWER BJT SECTION Collector-emitter Saturation Voltage Collector-emitter Voltage V CE(SAT) Io=.0mA 0.3 V V CEO 450 V Collector-Base Voltage V CBO 700 V OVER TEMPERATURE PROTECTION(OTP) Shutdown Temperature T SHDN Page 4

5 FUNCTION DESCRIPTION MC0X 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. When Toffs, the primary coil stores the energy, the output filter capacitor makes load discharge. In CC operation area, MC0X switch frequency will follow the output load direct ratio control detected by FB Voltage. 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: 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. Vaux : auxiliary winding voltage;nb:subsidiary winding turns;ns: output winding turns; Vd:forward voltage drop of output rectifier diode Ipk: primary peak current ; NP: primary winding turns; NS: secondary winding turns; Ipks:secondary peak current 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: 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 Figure 4.Auxiliary Voltage Wavaform CONSTANT CURRENT(CC ) OPETATION MC0X CC control circuit is requested the converter oprating in DCM. In CC operation mode, the CC control circuit will fix the proportion 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. OUTPUT CABLE COMPENSATION MC0X 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, MC0X built-in rich protection circuits, such as OCP,OVP, FB open-loop protection etc as intergration. Once abnormality, it will come into protection mode. Page 5

6 TYPICAL APPLICATION CIRCUIT 85~265Vac CN R - + L2 D~D4 C C2 R3 R4 C4 D5 R5 T2 D7 R0 C6 C8 Vo+ R Vo- + - C5 D6 R8 VCC HV ST-CPC C3 FB GND CS U MC08 U MD8 R7 R9 Figure 6. Typical application of MC08 (Output:5V2A) BOM LIST 5VA Charger With MC08 Position i Description Q'ty Position i Description Q'ty D-D4 N4007 A/KV DO-4 4 R4 330K 206 ±5% D5 FR 07 A/KV DO-4 R7 0.7R 206 ±% D7 SB540 5A/40V DO-5 R5 200R 206 ±5% C,C2 0uF/400V ±20% 8*2 2 R8 30K 0805 ±% C4 02 KV ±0% R9 22K 0805 ±% C5 0uF/6V ±20% 5* R0 2K 0805 ±5% C V ±0% SMD R 202R 0805 ±5% C6 680uF/0V ±20% 6*2 Low ESR 2 L mh W Inductor C8 02/00V 0805 T EE6 5+5 Transformer R 0R/W ±5% U MC08SCG-TR SOP-7 R3 20M/W ±5% Page 6

7 THERMAL IMPEDANCE P (DIP-8) Packge Impedance(Reference only) (θja)...70 /W (θjc)2... /W S (SOC-7) Packge Impedance(Reference only) (θja)...00 /W (θjc) /W Notes:. Pin7 (5), 8 (6) Soldered to 2 oz. (60 g/m2) copper clad,as large area as possible. 2. Measured on pin 7,8(5.6) 6)close to plastic interface(power BJT Collector) PART ORDERING INFORMATION (Circuit Serial Type) Part Number 08 MC08 09 MC09 Package Identifier S Plastic SOP-7 P Plastic DIP-8 T Plastic SOT-23 Cable compesation A: 0%; B: 4%, C: 6%; D: 9% Package Material Green: RoHS Compliant MC XX X X G -TR Tape & Reel and Other Options Blank Tube TL Tape & Reel Package S(SOP-7) Part Number Marking ID on Body Packing Type Minimum Pack MC08SXG-TR MC08 Tape & Reel 4000PCS MC09SXG-TR MC09 Tape & Reel 4000PCS t Page 7

8 MECHANICAL DIMENSIONS S-SOP-7++:Package dimensions conform to JEDEC specification :MS 02; :Package outline exclusive of mold flash and metal burr; 3:Package outline inclusive of plating thickness; :Datums A and B to be determined at datum plane H; 5:Controlling dimensions are in Inches; Millineter sizes are shown in parenthesis; Angles in degrees;+6:minimum metal to metal spacing at the package body for the omitted lead location is Inch(2.00mm); 6:Pin locations start with Pin, and continue counter clock wise to pin 8 when viewed from the top. The notch and/or dimple are aids in locating Pin, Pin 7 is omitted; 7:Lead width measured at package body; Notes: ++++ t Page 8

9 CONTACT DETAILS MIX-DESIGN SEMICONDUCTOR TECHNOLOGY LIMITED Building 8,Tengfei Creative park, No.388 Xingping 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 Rev.0 Description New Release Date Oct,207 SALES SUPPORT LOCATIONS SOUTH CHINA (Technical support and sevice Center) Room , 03 DongMing Building, Minkang Road, Longhua new district, Shenzhen city, China. Tel: (755) Fax: (755) Page 9