FAN7602 Green Current Mode PWM Controller Features Description Green Current Mode PWM Control The FAN7602 is a green current mode PWM controller. It is specially designed for off-line adapter application, DVDP, VCR, LCD monitor application, and auxiliary power supplies. Fixed 65kHz Operation with Frequency Modulation Internal High-Voltage Start-up Switch Burst Mode Operation Line Voltage Feed Forward to Limit Maximum Power Line Under-Voltage Protection Latch Protection & Internal Soft-Start (10ms) Function Overload Protection Over-Voltage Protection Low Operation Current: Typical 1mA 8-pin DIP/SOP The internal high-voltage start-up switch and the burstmode operation reduce the power loss in standby mode. Because of the internal start-up switch and the burst mode, it is possible to supply 0.5W load, limiting the input power to under 1W when the input line voltage is 265VAC. On no-load condition, the input power is under 0.3W. The maximum power can be limited constantly, regardless of the line voltage change, using the power limit function. Applications Adapter The switching frequency is internally fixed at 65kHz and the frequency modulation technique reduces EMI. LCD Monitor Power Auxiliary Power Supply The FAN7602 includes various protections for the system reliability and the internal soft-start prevents the output voltage overshoot at start-up. Related Application Notes AN6014 - Green Current Mode PWM Controller FAN7602 Ordering Information Part Number Operating Temp. Range Pb-Free FAN7602N FAN7602M -25°C to +125°C FAN7602MX © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 Yes Package Packing Method Marking Code 8-DIP Rail FAN7602 8-SOP Rail FAN7602 Tape & Reel FAN7602 www.fairchildsemi.com FAN7602 Green Current Mode PWM Controller November 2006 FAN7602 Green Current Mode PWM Controller Typical Application Diagram FAN7602 FAN7602 Rev. 02 Figure 1. Typical Flyback Application Internal Block Diagram Vstr 8 6 VCC LUVP 1 LUVP OLP 2V/1.5V OVP Auto Restart Protection OVP SS End Latch Protection Latch Reset Circuit Driver Circuit 5 OUT Plimit Offset 3 CS/FB Delay Circuit 0.95V/0.88V Latch 2 12V/8V UVLO PWM Block 65kHz Clock with Frequency Modulation Latch/ Plimit 5V Ref VCC SS End 10ms Soft Start 19V PWM+ OLP 4V Plimit Offset Plimit Offset Generator SoftStart Power Limit Plimit Offset OLP 4 GND Soft-Start FAN7602 Rev. 03 Figure 2. Functional Block Diagram of FAN7602 © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 2 FAN7602 Green Current Mode PWM Controller Pin Assignments Vstr NC VCC OUT 8 7 6 5 FAN7602 YWW 1 2 3 4 LUVP Latch/ Plimit CS/FB GND FAN7602 Rev. 03 Figure 3. Pin Configuration (Top View) Pin Definitions Pin Number Pin Name Pin Function Description 1 LUVP Line Under-Voltage Protection Pin. This pin is used to protect the set when the input voltage is lower than the rated input voltage range. 2 Latch/Plimit Latch Protection and Power Limit Pin. When the pin voltage exceeds 4V, the latch protection works. The latch protection is reset when the VCC voltage is lower than 5V. For the power limit function, the Over-Current Protection (OCP) level decreases as the pin voltage increases. 3 CS/FB Current Sense and Feedback Pin. This pin is used to sense the MOSFET current for the current mode PWM and OCP. The output voltage feedback information and the current sense information are added using an external RC filter. 4 GND Ground Pin. This pin is used for the ground potential of all the pins. For proper operation, the signal ground and the power ground should be separated. 5 OUT Gate Drive Output Pin. This pin is an output pin to drive an external MOSFET. The peak sourcing current is 450mA and the peak sinking current is 600mA. For proper operation, the stray inductance in the gate driving path must be minimized. 6 VCC Supply Voltage Pin. IC operating current and MOSFET driving current are supplied using this pin. 7 NC No Connection. 8 Vstr Start-up Pin. This pin is used to supply IC operating current during IC start-up. After start-up, the internal JFET is turned off to reduce power loss. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 3 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. Symbol VCC Parameter Supply Voltage Value Unit 20 V IOH, IOL Peak Drive Output Current +450/-600 mA VCS/FB CS/FB Input Voltage -0.3 to 20 V VLUVP LUVP Input Voltage -0.3 to 10 V VLatch Latch/Plimit Input Voltage -0.3 to 10 V Vstr Vstr Input Voltage 600 V TJ Operating Junction Temperature 150 °C TA Operating Temperature Range -25 to 125 °C Tstg Storage Temperature Range -55 to 150 °C PD Power Dissipation 1.2 W VESD_HBM ESD Capability, Human Body Model 2.0 kV VESD_MM ESD Capability, Machine Model 300 V VESD_CDM ESD Capability, Charged Device Model 500 V Thermal Impedance Symbol θJA(1) Parameter Thermal Resistance, Junction-to-Ambient 8-DIP Value Unit 100 °C/W Note: 1. Regarding the test environment and PCB type, please refer to JESD51-2 and JESD51-10. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 4 FAN7602 Green Current Mode PWM Controller Absolute Maximum Ratings VCC = 14V, TA = -25°C~125°C, unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit Vstr = 30V, TA = 25°C 0.7 1 1.4 mA START UP SECTION Istr Vstr Start-up Current UNDER VOLTAGE LOCK OUT SECTION Vth(start) Start Threshold Voltage VCC increasing 11 12 13 V Vth(stop) Stop Threshold Voltage VCC decreasing 7 8 9 V HY(uvlo) UVLO Hysteresis 3.6 4 4.4 V 250 320 μA 1 1.5 mA 5 10 15 ms 59 65 73 kHz SUPPLY CURRENT SECTION Ist Start-up Supply Current TA = 25°C ICC Operating Supply Current Output no switching SOFT-START SECTION TSS Soft-Start Time(2) PWM SECTION FOSC Operating Frequency ΔF Frequency Modulation VCS/FB1 tD CS/FB Threshold Voltage VCS/FB = 0.2V, TA = 25°C ±2 TA = 25°C 0.9 Propagation Delay to Output(2) DMAX Maximum Duty Cycle DMIN Minimum Duty Cycle 70 kHz 1.0 1.1 V 100 150 ns 75 80 % 0 % BURST MODE SECTION VCS/FB2 Burst On Threshold Voltage TA = 25°C 0.84 0.95 1.06 V VCS/FB3 Burst Off Threshold Voltage TA = 25°C 0.77 0.88 0.99 V VLatch/Plimit = 2V, TA = 25°C 0.12 0.16 0.20 11.5 12 14 V POWER LIMIT SECTION KPlimit Offset Gain OUTPUT SECTION VOH Output Voltage High TA = 25°C, Isource = 100mA VOL Output Voltage Low TA = 25°C, Isink = 100mA 1 2.5 V tr Rising Time(2) TA = 25°C, Cl = 1nF 45 150 ns tf Falling Time(2) TA = 25°C, Cl = 1nF 35 150 ns Note: 2. These parameters, although guaranteed by design, are not tested in production. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 5 FAN7602 Green Current Mode PWM Controller Electrical Characteristics VCC = 14V, TA = -25°C~125°C, unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit 3.6 4 4.4 V PROTECTION SECTION VLatch TOLP TOLP_ST VOLP Latch Voltage (3) Overload Protection Time 20 22 24 ms Overload Protection Time at Start-up 30 37 44 ms 0 0.1 V Overload Protection Level VLUVPoff Line Under-Voltage Protection On to Off VLUVPon VOVP TA = 25°C 1.9 2 2.1 V Line Under-Voltage Protection Off to On TA = 25°C 1.4 1.5 1.6 V Over Voltage Protection TA = 25°C 18 19 20 V Note: 3. These parameters, although guaranteed by design, are not tested in production. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 6 FAN7602 Green Current Mode PWM Controller Electrical Characteristics (Continued) 8.8 12.4 8.4 VTL[V] VTH[V] 12.8 12.0 8.0 11.6 7.6 11.2 7.2 -25 0 25 50 75 100 -25 125 0 25 50 75 100 125 Temperature [°C] Temperature [°C] Figure 4. Start Threshold Voltage vs. Temp. Figure 5. Stop Threshold Voltage vs. Temp. 4.4 350 4.2 300 4.1 Ist [μA] UVLO Hysteresis [V] 4.3 4.0 250 3.9 3.8 200 3.7 3.6 -25 0 25 50 75 100 150 -25 125 0 Temperature [°C] 25 50 75 100 125 Temperature [°C] Figure 6. UVLO Hysteresis vs. Temp. Figure 7. Start-up Supply Current vs. Temp. 1.5 1.3 1.4 1.2 Istr [mA] Iop [mA] 1.3 1.2 1.1 1.1 1.0 1.0 0.9 0.9 0.8 -25 0 25 50 75 100 0.8 -25 125 Temperature [°C] 25 50 75 100 125 Temperature [°C] Figure 9. Vstr Star-up Current vs. Temp. Figure 8. Operating Supply Current vs. Temp. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 0 www.fairchildsemi.com 7 FAN7602 Green Current Mode PWM Controller Typical Performance Characteristics 70 1.10 CSFB2 CSFB3 68 1.00 FOSC [kHz] CS/FB Threshold [V] 1.05 0.95 0.90 0.85 0.80 66 64 62 0.75 0.70 -25 0 25 50 75 100 60 -25 125 0 Temperature [°C] 75 100 125 Figure 11. Operating Frequency vs. Temp. 0.20 80 0.18 78 DMAX [%] Kplimit 50 Temperature [°C] Figure 10. Burst On/Off Voltage vs. Temp. 0.16 0.14 0.12 76 74 72 0.10 -25 0 25 50 75 100 70 -25 125 0 Temperature [°C] 25 50 75 100 125 Temperature [°C] Figure 12. Offset Gain vs. Temp. Figure 13. Maximum Duty Cycle vs. Temp. 4.4 20.0 19.6 4.2 VLATCH [V] VOVP [V] 25 19.2 18.8 4.0 3.8 18.4 18.0 -25 0 25 50 75 100 3.6 -25 125 Temperature [°C] 25 50 75 100 125 Temperature [°C] Figure 14. OVP Voltage vs. Temp. Figure 15. Latch Voltage vs. Temp. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 0 www.fairchildsemi.com 8 FAN7602 Green Current Mode PWM Controller Typical Performance Characteristics (Continued) 2.10 1.70 1.65 VLUVPon [V] VLUVPoff [V] 2.05 2.00 1.60 1.55 1.50 1.95 1.45 1.90 -25 0 25 50 75 100 1.40 -25 125 Temperature [°C] 25 50 75 100 125 Temperature [°C] Figure 16. LUVP On to Off Voltage vs. Temp. CSFB1 Threshold voltage [V] 0 Figure 17. LUVP Off to On Voltage vs. Temp. 1.08 1.04 1.00 0.96 0.92 -25 0 25 50 75 100 125 Temperature [°C] Figure 18. CS/FB Threshold Voltage vs. Temp. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 9 FAN7602 Green Current Mode PWM Controller Typical Performance Characteristics (Continued) 1. Start-up Circuit and Soft-Start Block Figure 21 shows the current sense and feedback circuits. RS is the current sense resistor to sense the switch current. The current sense information is filtered by an RC filter composed of RF and CF. According to the output voltage feedback information, IFB charges or stops charging CF to adjust the offset voltage. If IFB is zero, CF is discharged through RF and RS to lower the offset voltage. The FAN7602 contains a start-up switch to reduce the power loss of the external start-up circuit of the conventional PWM converters. The internal start-up circuit charges the VCC capacitor with 0.9mA current source if the AC line is connected. The start-up switch is turned off 15ms after IC starts up, as shown in Figure 19. The softstart function starts when the VCC voltage reaches the start threshold voltage of 12V and ends when the internal soft-start voltage reaches 1V. The internal start-up circuit starts charging the VCC capacitor again if the VCC voltage is lowered to the minimum operating voltage, 8V. The UVLO block shuts down the output drive circuit and some blocks to reduce the IC operating current and the internal soft-start voltage drops to zero. If the VCC voltage reaches the start threshold voltage, the IC starts switching again and the soft-start block works as well. 67kHz 16 steps 1 step=250Hz 63kHz 125Hz FAN7602 Rev. 02 Figure 20. Frequency Modulation Figure 22 shows typical voltage waveforms of the CS/FB pin. The current sense waveform is added to the offset voltage as shown in the figure. The CS/FB pin voltage is compared with PWM+ that is 1V - Plimit offset as shown in Figure 22. If the CS/FB voltage meets PWM+, the output drive is shut off. As shown in Figure 22, if the feedback offset voltage is low, the switch on time is increased. If the feedback offset voltage is high, the switch on time is decreased. In this way, the duty cycle is controlled according to the output load condition. In general, the maximum output power increases as the input voltage increases because the current slope during switch on-time increases. To limit the output power of the converter constantly, the power limit function is included in the FAN7602. Sensing the converter input voltage through the Latch/Plimit pin, the Plimit offset voltage is subtracted from 1V. As shown in Figure 22, the Plimit offset voltage is subtracted from 1V and the switch on-time decreases as the Plimit offset voltage increases. If the converter input voltage increases, the switch on-time decreases, controlling the output power constant. The offset voltage is proportional to the Latch/Plimit pin voltage and the gain is 0.16. If the Latch/Plimit voltage is 1V, the offset voltage is 0.16V. During the soft-start, pulse-width modulated (PWM) comparator compares the CS/FB pin voltage with the softstart voltage. The soft-start voltage starts from 0.5V and the soft-start ends when it reaches 1V and the soft-start time is 10ms. The start-up switch is turned off when the soft-start voltage reaches 1.5V. VCC 12V 8V Start-up Current 1.5V 1V 0.5V Soft-Start Voltage Soft-Start Time (10ms) t 5ms FAN7602 Rev. 02 Figure 19. Start-up Current and VCC Voltage 2. Oscillator Block The oscillator frequency is set internally and a frequency modulation (FM) function reduces EMI. The average frequency is 65kHz and the modulation frequency is ±2kHz. The frequency varies from 63kHz to 67kHz with 16 steps. The frequency step is 250Hz and FM frequency is 125Hz, as shown in Figure 20. VCC PWM Comparator PWM+ Soft-Start 3. Current Sense and Feedback Block RFB Power Limit 3 The FAN7602 performs the current sensing for the current mode PWM and the output voltage feedback with only one pin, pin 3. To achieve the two functions with one pin, an internal LEB (leading edge blanking) circuit to filter the current sense noise is not included because the external RC filter is necessary to add the output voltage feedback information and the current sense information. CS/FB IFB RF Isw CF RS FAN7602 Rev. 02 Figure 21. Current Sense and Feedback Circuits © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 Plimit Offset www.fairchildsemi.com 10 FAN7602 Green Current Mode PWM Controller Applications Information Power Limit Offset CS/FB FB Offset Clock GND OLP 3 CS/FB 22ms Timer 50mV Soft-Start On Time FAN7602 Rev. 02 (a) Low Power Limit Offset Case Figure 24. Overload Protection Circuit 1V Power Limit Offset PWM+ CS/FB 5.2 Line Under-Voltage Protection If the input voltage of the converter is lower than the minimum operating voltage, the converter input current increases too much, causing components failure. Therefore, if the input voltage is low, the converter should be protected. In the FAN7602, the LUVP circuit senses the input voltage using the LUVP pin and, if this voltage is lower than 2V, the LUVP signal is generated. The comparator has 0.5V hysteresis. If the LUVP signal is generated, the output drive block is shut down, the output voltage feedback loop is saturated, and the OLP works if the LUVP condition persists more than 22ms. FB Offset GND On Time (b) High Power Limit Offset Case FAN7602 Rev. 02 Figure 22. CS/FB Pin Voltage Waveforms 4. Burst Mode Block The FAN7602 contains the burst mode block to reduce the power loss at a light load and no load as the FAN7601. A hysteresis comparator senses the offset voltage of the Burst+ for the burst mode as shown in Figure 23. The Burst+ is the sum of the CS/FB voltage and Plimit offset voltage. The FAN7602 enters the burst mode when the offset voltage of the Burst+ is higher than 0.95V and exits the burst mode when the offset voltage is lower than 0.88V. The offset voltage is sensed during the switch off time. Vin 1 + − B u rs t+ 0 .9 5 V /0 .8 8 V 3 LUVP 2V/1.5V FAN7602 Rev. 02 Figure 25. Line UVP Circuit O ffs e t D e la y C irc u it − + 5.3 Latch Protection The latch protection is provided to protect the system against abnormal conditions using the Latch/Plimit pin. The Latch/Plimit pin can be used for the output overvoltage protection and/or other protections. If the Latch/ Plimit pin voltage is made higher than 4V by an external circuit, the IC is shut down. The latch protection is reset when the VCC voltage is lower than 5V. C S /F B FA N7602 R ev. 02 Figure 23. Burst Mode Block 5. Protection Block The FAN7602 contains several protection functions to improve system reliability. 5.4 Over-Voltage Protection (OVP) If the VCC voltage reaches 19V, the IC shuts down and the OVP protection is reset when the VCC voltage is lower than 5V. 5.1 Overload Protection The FAN7602 contains the overload protection function. If the output load is higher than the rated output current, the output voltage drops and the feedback error amplifier is saturated. The offset of the CS/FB voltage representing the feedback information is almost zero. As shown in Figure 24, the CS/FB voltage is compared with 50mV reference when the internal clock signal is high and, if the voltage is lower than 50mV, the OLP timer starts 6. Output Drive Block The FAN7602 contains a single totem-pole output stage to drive a power MOSFET. The drive output is capable of up to 450mA sourcing current and 600mA sinking current with typical rise and fall time of 45ns, 35ns respectively with a 1nF load. © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 11 FAN7602 Green Current Mode PWM Controller 1V PWM+ counting. If the OLP condition persists for 22ms, the timer generates the OLP signal. And this protection is reset by the UVLO. The OLP block is enabled after the soft-start finishes. Application Output power Input voltage Output voltage Adapter 48W Universal input (85~265VAC) 12V Features Low stand-by power (<0.3W @ 265VAC) Constant output power control Key Design Notes All the IC-related components should be placed close to IC, especially C107 and C110. If R106 value is too low, there can be subharmonic oscillation. R109 should be designed carefully to make the VCC voltage higher than 8V when the input voltage is 265VAC at no load. R110 should be designed carefully to make the VCC voltage lower than OVP level when the input voltage is 85VAC at full load. R103 should be designed to keep the MOSFET Vds voltage lower than maximum rating when the output is shorted. 1. Schematic R206 C204 D202 D204 1 T1 12 R103 C106 BD101 C105 R114 9 Q101 3 6 D102 R109 R105 R106 ZD101 LF1 C107 RT101 C101 FUSE 2 Latch/ Plimit 3 CS/FB 4 Vstr FAN7602 R107 R101 4 LUVP GND NC VCC Out 8 OP1 3 R202 R201 R113 1 C222 5 R102 C110 R110 C109 C103 C104 C102 C202 C201 D101 R112 L201 R204 1 R203 C203 2 7 6 R111 R104 IC201 3 1 2 R205 5 D103 IC101 AC INPUT 4 3 C108 R108 OP2 1 R207 2 ZD201 FAN7602 Rev. 02 Figure 26. Schematic © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 12 FAN7602 Green Current Mode PWM Controller Typical application circuit 1 3mm 12 3mm Np2 Ns Np1 9 2 NVcc Shield Ns Shied Np2 Ns 5 3 5 Shield Ns Shied NVcc Np1 5 6 FAN7602 Rev. 02 FAN7602 Rev. 02 Figure 27. Inductor Schematic Diagram 3. Winding Specification No Pin (s→f) 3→2 Np1 Wire 0.3φ ×2 Turns Winding Method 31 Solenoid Winding 0.9 Not Shorted 10 Solenoid Winding 0.9 Not Shorted 10 Solenoid Winding 31 Solenoid Winding Insulation: Polyester Tape t = 0.03mm, 2 Layers Shield 5 Copper Tape Insulation: Polyester Tape t = 0.03mm, 2 Layers 12 → 9 Ns 0.65φ × 3 Insulation: Polyester Tape t = 0.03mm, 2 Layers Shield 5 Copper Tape Insulation: Polyester Tape t = 0.03mm, 2 Layers 6→5 NVcc 0.2φ × 1 Insulation: Polyester Tape t = 0.03mm, 2 Layers 2→1 Np2 0.3φ × 2 Outer Insulation: Polyester Tape t = 0.03mm, 2 Layers 4. Electrical Characteristics Pin Specification Remarks Inductance 1-3 607μH 100kHz, 1V Inductance 1-3 15μH 9 - 12 shorted 5. Core & Bobbin Core: EER2828 Bobbin: EER2828 Ae(mm2): 82.1 © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 13 FAN7602 Green Current Mode PWM Controller 2. Inductor Schematic Diagram Part Value Note Part Fuse FUSE 1A/250V 5D-9 Resistor R102, R112 Note Capacitor NTC RT101 Value C101 220nF/275V Box Capacitor C102 150nF/275V Box Capacitor C103, C104 102/1kV Ceramic C105 150μF/400V Electrolytic 10MΩ 1/4W C106 103/630V Film R103 56kΩ 1/2W C107 271 Ceramic R104 150Ω 1/4W C108 103 Ceramic R105 1kΩ 1/4W C109 22μF/25V Electrolytic R106 0.5Ω 1/2W C110 473 Ceramic R107 56kΩ 1/4W C201, C202 1000μF/25V Electrolytic R108 10kΩ 1/4W C203 102 Ceramic R109 0Ω 1/4W C204 102 Ceramic R110 1kΩ 1/4W C222 222/1kV Ceramic R111 6kΩ 1/4W R113 180kΩ 1/4W R114 50kΩ 1/4W R201 1.5kΩ 1/4W D101, D102 UF4007 Fairchild R202 1.2kΩ 1/4W D103 1N5819 Fairchild MOSFET Q101 FQPF8N60C Fairchild Diode R203 20kΩ 1/4W D202, D204 FYPF2010DN Fairchild R204 27kΩ 1/4W ZD101, ZD201 1N4744 Fairchild R205 7kΩ 1/4W BD101 KBP06 Fairchild R206 10Ω 1/2W R207 10kΩ 1/4W TNR R101 IC 471 470V Filter IC101 FAN7602 Fairchild LF101 23mH 0.8A IC201 KA431 Fairchild L201 10μH 4.2A OP1, OP2 H11A817B Fairchild © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 14 FAN7602 Green Current Mode PWM Controller 6. Demo Circuit Part List FAN7602 Green Current Mode PWM Controller 7. PCB Layout Minimize leakage inductance DC Link Minimize loop area Pulsating high current 8 7 6 5 Vstr NC VCC OUT LUVP Latch/ Plimit CS/FB GND 1 2 3 4 FAN7602 YWW Separate power and signal ground Place these cap. close to IC Signal level low current FAN7602 Rev. 02 Figure 28. PCB Layout Recommendations for FAN7602 8. Performance Data 85VAC 110VAC 220VAC 265VAC Input Power at No Load 105.4mW 119.8mW 184.7mW 205.5mW Input Power at 0.5W Load 739.4mW 761.4mW 825.4mW 872.2mW OLP Point 4.42A 4.66A 4.6A 4.4A © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 15 FAN7602 Green Current Mode PWM Controller Mechanical Dimensions 8-DIP Dimensions are in inches (millimeters) unless otherwise noted. Figure 29. 8-Lead Dual In-Line Package (DIP) © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 16 FAN7602 Green Current Mode PWM Controller Mechanical Dimensions (Continued) 8-SOP Dimensions are in millimeters unless otherwise noted. Figure 30. 8-Lead Small Outline Package (SOP) © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 17 ACEx¥ ActiveArray¥ Bottomless¥ Build it Now¥ CoolFET¥ CROSSVOLT¥ DOME¥ EcoSPARK¥ 2 E CMOS¥ EnSigna¥ ® FACT FACT Quiet Series¥ ® FAST FASTr¥ FPS¥ FRFET¥ GlobalOptoisolator¥ GTO¥ HiSeC¥ 2 I C¥ i-Lo¥ ImpliedDisconnect¥ IntelliMAX¥ ISOPLANAR¥ LittleFET¥ MICROCOUPLER¥ MicroFET¥ MicroPak¥ MICROWIRE¥ MSX¥ MSXPro¥ OCX¥ OCXPro¥ ® OPTOLOGIC OPTOPLANAR¥ PACMAN¥ POP¥ Power247¥ PowerEdge¥ PowerSaver¥ ® PowerTrench ® QFET QS¥ QT Optoelectronics¥ Quiet Series¥ RapidConfigure¥ RapidConnect¥ ScalarPump¥ PSerDes¥ ® SILENT SWITCHER SMART START¥ SPM¥ Stealth¥ SuperFET¥ SuperSOT¥-3 SuperSOT¥-6 SuperSOT¥-8 SyncFET¥ TCM¥ TinyBoost¥ TinyBuck¥ ® TinyLogic TINYOPTO¥ TinyPower¥ TinyPWM¥ TruTranslation¥ ® UHC ® UltraFET UniFET¥ VCX¥ Wire¥ Across the board. Around the world.¥ Programmable Active Droop¥ ® The Power Franchise DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Definition Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I21 © 2006 Fairchild Semiconductor Corporation FAN7602 Rev. 1.0.2 www.fairchildsemi.com 18 FAN7602 Green Current Mode PWM Controller TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.