A Product Line of Diodes Incorporated AP3585A/B/C SINGLE PHASE SYNCHRONOUS BUCK PWM CONTROLLER Description Pin Assignments NEW PRODUCT The AP3585A/B/C is a compact synchronous-rectified buck controller specifically designed to operate from 4.5V to 13.2V supply voltage and deliver high-quality output voltage as low as 0.8V (AP3585A) or 0.6V (AP3585B/C). This SO-8EP device operates at fixed 300kHz/200kHz frequency and provides an optimal level of integration to reduce size and cost of the power supply. (Top View) This controller integrates internal MOSFET drivers that support 12V+12V bootstrapped voltage for high- efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count. BOOT 1 8 PHASE UGATE 2 7 COMP/EN GND 3 6 FB LGATE/OCSET 4 5 VCC 8 PHASE 7 COMP/EN 6 FB 5 VCC This controller provides single feedback loop, voltage-mode control with fast transient response. The error amplifier features a 10MHz gain-bandwidth product and 6V/μs slew rate which enables high converter bandwidth for fast transient performance. (SO-8/ M Package) (Top View) Other features include internal soft-start, under voltage protection, over current protection and shutdown function. With afore mentioned functions, this part provides customers a compact, high efficiency, well-protected and cost-effective solution. BOOT 1 UGATE 2 GND 3 LGATE/OCSET 4 The AP3585A/B/C is available in SO-8 and SO-8EP packages. Features Supply Voltage: 4.5V to 13.2V VIN Input Range: 3.3V to 12V 0.8V/0.6V to 80% of VIN Output Range Internal Reference: 0.8V/0.6V Simple Single-loop Control Voltage-mode PWM Control Duty Cycle: 0% to 80% Fast Transient Response 10MHz High-bandwidth Error Amplifier with 6V/μs Slew Rate Fixed Oscillator Frequency: 300kHz/200kHz Lossless, Programmable Over Current Protection (Uses Lower MOSFET RDS(ON)) Start-up into Pre-biased Load Built-in Thermal Shutdown Built-in Soft-start Over Current Protection Over Voltage Protection Under Voltage Protection Integrated Boot Diode Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: Exposed Pad 9 (SO-8EP/ MP Package) Applications Subsystem Power Supplies PCI, AGP, Graphics Cards, Digital TV SSTL-2 and DDR/2/3 SDRAM Bus Termination Supply Cable Modems, Set Top Boxes, and DSL Modems Industrial Power Supplies and General Purpose Supplies 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AP3585A/B/C Document number: DS36819 Rev. 1 - 2 1 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C NEW PRODUCT Typical Applications Circuit Pin Descriptions Pin Number Pin Name SO-8 SO-8EP 1 1 BOOT 2 2 UGATE 3 3 GND 4 4 LGATE/OCSET 5 5 VCC 6 6 FB 7 7 COMP/EN 8 8 PHASE – 9 Exposed Pad AP3585A/B/C Document number: DS36819 Rev. 1 - 2 Function Bootstrap pin. Connect a bootstrap capacitor from this pin to PHASE for creating a BOOT voltage suitable to drive a standard N-Channel MOSFET. Upper-gate drive pin. Connect this pin to the upper MOSFET gate providing the gate drive. This pin is monitored by the adaptive shootthrough protection circuitry to determine when the upper MOSFET has turned off. Ground for the IC. All voltage levels are measured with respect to this pin. Connect this pin directly to the low side MOSFET source and ground plane with the lowest impedance. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. Low-side Gate Driver Output and Over-Current Setting Input. This pin is the gate driver for low-side MOSFET. It is also used to set the maximum inductor current. Refer to the section in “Function Description” for detail. Bias supply pin. Provides a 4.5V to 13.2V bias supply for the chip from this pin. The pin should be bypassed with a capacitor to GND. Feedback pin. This pin is the inverting input of the internal error amplifier. Use FB pin, in combination with the COMP pin, to compensate the voltage control feedback loop of the converter. A resistor divider from output to GND is used to set the output voltage. Compensation and disable pin. This pin is the output of the Error Amplifier. Pull COMP pin low will shut down the IC. This pin connects to the source of the upper MOSFET and the drain of the lower MOSFET. This pin is also monitored by the adaptive shoot-through protection circuitry to determine when the upper MOSFET has turned off. Exposed Pad as ground pin. 2 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C NEW PRODUCT Functional Block Diagram AP3585A/B/C Document number: DS36819 Rev. 1 - 2 3 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Absolute Maximum Ratings (Note 4) Symbol Parameter VCC VBOOT-PHASE Rating Unit Supply Input Voltage -0.3 to 15 V BOOT to PHASE Voltage -0.3 to 15 V -0.3 to VBOOTPHASE+0.3 -5 to VBOOTPHASE+5 DC UGATE to PHASE Voltage VUGATE NEW PRODUCT <200ns VPHASE PHASE to GND Voltage VLGATE LGATE to GND Voltage DC -0.3 to 15 <200ns -5 to 30 DC -0.3 to VCC+0.3 <200ns -5 to VCC+5 Other Pin Voltage Notes: -0.3 to 6 V V V V SO-8 0.87 SO-8EP 1.43 SO-8 115 SO-8EP 70 SO-8 22 SO-8EP 22 PD Power Dissipation W θJA Thermal Resistance (Junction to Ambient) θJC Thermal Resistance (Junction to Case) TJ Junction Temperature -40 to +150 TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10 sec) +260 ºC – ESD (Human Body Model) (Note 5) 2000 V – ESD (Machine Model) (Note 5) 200 V ºC/W ºC/W ºC 4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. 5. Devices are ESD sensitive. Handling precaution is recommended. Recommended Operating Conditions Symbol VCC TA Parameter Min Max Unit Supply Input Voltage 4.5 13.2 V Operating Ambient Temperature -40 +85 C Electrical Characteristics (VCC = 12V, TA = +25oC, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit SUPPLY INPUT Supply Current UGATE and LGATE Pins Open; Switching – 5 – mA ICC_Q Quiescent Supply Current VFB = VREF+0.1V, No Switching – 4 – mA VIN Power Input Voltage – 3.0 – 13.2 V ICC AP3585A/B/C Document number: DS36819 Rev. 1 - 2 4 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Electrical Characteristics (Cont. VCC = 12V, TA = +25oC, unless otherwise specified.) Symbol POWER ON RESET VPOR VPOR_HYS NEW PRODUCT ERROR AMPLIFIER GDC_OL Parameter Conditions Min Typ Max Unit VCC Rising Threshold VCC Rising 4.0 4.2 4.4 V VCC Threshold Hysteresis – – 500 – mV Open Loop DC Gain – 55 70 – dB GBW Gain-bandwidth Product – – 10 – MHz SR Slew Rate – 3 6 – V/µs – Transconductance – – 800 1100 µA/V – Output Source Current VFB < VREF 80 120 – µA – Output Sink Current VFB > VREF 80 120 – µA – -1.0 – A – 1.5 – A 50mA Source Current – 2 4 Ω PWM CONTROLLER GATE DRIVERS IUG_SRC Upper Gate Source Current IUG_SNK Upper Gate Sink Current RUGATE Upper Gate Sink Resistance VBOOT-VPHASE = 12V, VBOOT-VUGATE = 6V VBOOT-VPHASE = 12V, VBOOT-VUGATE = 6V ILG_SRC Lower Gate Source Current VCC-VLGATE = 6V – -1 – A ILG_SNK Lower Gate Sink Current VLGATE = 6V – 1.5 – A RLGATE Lower Gate Sink Resistance 50mA Source Current – 1 2 Ω – 30 – ns – 30 – ns PHASE Falling to LGATE Rising Delay LGATE Falling to UGATE Rising Delay – Minimum Duty Cycle VPHASE < 1.2V to VLGATE > 1.2V VLGATE < 1.2V to (VUGATE-VPHASE) > 1.2V – – 0 – % – Maximum Duty Cycle – 75 82 89 % AP3585A/B 270 300 330 AP3585C 180 200 220 – 1.4 – VP-P AP3585A 0.788 0.8 0.812 V AP3585B/C 0.591 0.6 0.609 V – 10 50 nA 0.3 0.4 0.5 V – – OSCILLATOR fOSC ∆VOSC Oscillator Frequency Ramp Amplitude – kHz REFERENCE VOLTAGE VFB Feedback Voltage IFB Feedback Bias Current VFB = 5V VFB_UVP Under Voltage Protection – VFB_OVP Over Voltage Protection IOCSET OC Current Source Built-in Maximum OCP Voltage PROTECTION VOCP_MAX tSS Soft-start Interval AP3585A – 1.1 – AP3585B/C – 0.8 – – 9 10 11 µA – – 0.375 – V AP3585A – 2 – AP3585B – 1.5 – AP3585C – 2.4 – V ms VCOMP/EN Enable Threshold – 0.25 0.30 0.35 V TOTSD Thermal Shutdown Thermal Shutdown Hysteresis – – +160 – ºC – – +20 – ºC THYS AP3585A/B/C Document number: DS36819 Rev. 1 - 2 5 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Performance Characteristics Line Regulation Load Regulation 4 3 VOUT=1.5V Output Voltage Variation (%) NEW PRODUCT Output Voltage Variation (%) 1.0 0.5 0.0 -0.5 VOUT=1.5V 2 1 0 -1 -2 -3 5 6 7 8 9 10 11 12 -4 13 0 2 4 6 10 12 14 16 18 20 Output Current (A) Switching Frequency vs. Temperature Switching Frequency vs. Input Voltage 320 320 315 315 310 AP3585A/B 305 300 295 290 285 310 AP3585A/B 305 300 295 290 285 280 280 275 275 270 270 -40 -20 0 20 40 60 80 100 120 4 140 5 6 7 8 9 10 11 12 13 14 Input Voltage (V) o Temperature ( C) Reference Voltage vs. Temperature Reference Voltage vs. Input Voltage 0.816 0.810 0.808 0.814 0.806 AP3585A 0.812 Reference Voltage (V) Reference Voltage (V) 8 Input Voltage (V) Switching Frequency (kHz) Switching Frequency (kHz) -1.0 0.810 0.808 0.806 0.804 0.804 0.802 0.800 AP3585A 0.798 0.796 0.794 0.802 0.792 0.800 0.790 -40 -20 0 20 40 60 80 100 120 Temperature ( C) AP3585A/B/C Document number: DS36819 Rev. 1 - 2 4 5 6 7 8 9 10 11 12 13 14 Input Voltage (V) o 6 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Performance Characteristics (Cont.) Power-on Waveform (VIN = 12V, VOUT = 1.5V, IOUT = 0A) Enable-on Waveform (VIN = 12V, VOUT = 1.5V, IOUT = 0A) NEW PRODUCT VIN 10V/div VOUT 1V/div VOUT 1V/div VCOMP 0.5V/div VCOMP 0.5V/div VUGATE 20V/div VLGATE 5V/div VLGATE 10V/div Time 4ms/div Time 4ms/div Load Transient Response (VIN = 12V, VOUT = 1.5V, IOUT = 0A to 10A) Load Transient Response (VIN = 12V, VOUT = 1.5V, IOUT = 0A to 20A) VOUT_AC 50mV/div VOUT_AC 50mV/div IOUT 5A/div IOUT 10A/div Time 400µs/div Time 400µs/div Over Current Protection (VIN = 12V, VOUT = 1.5V) Under Voltage Protection (VIN = 12V, VOUT = 1.5V) VOUT 1V/div VOUT 1V/div VPHASE 10V/div VUGATE 20V/div VCOMP 1V/div VLGATE 10V/div IOUT 50A/div VCOMP 1V/div Time 20ms/div Time 10ms/div AP3585A/B/C Document number: DS36819 Rev. 1 - 2 7 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Performance Characteristics (Cont.) Over Voltage Protection (VIN = 12V, VOUT = 1.5V) VOUT 1V/div NEW PRODUCT VUGATE 20V/div VLGATE 10V/div VCOMP 1V/div Time 20ms/div AP3585A/B/C Document number: DS36819 Rev. 1 - 2 8 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Functional Descriptions The AP3585A/B/C is a voltage-mode single phase synchronous buck controller with embedded MOSFET drivers. This part provides complete protection functions such as over voltage protection, under voltage protection and over current protection. Inductor current information is sensed by RDS(ON) of the low side MOSFET. The over current protection threshold can be simply programmed by a resistor. Power on Reset and Chip Enable A power on reset (POR) circuitry continuously monitors the supply voltage at VCC pin. Once the rising POR threshold is exceeded, the NEW PRODUCT AP3585A/B/C sets itself to active state and is ready to accept chip enable command. The rising POR threshold is typically 4.2V at VCC rising. The COMP/EN is a multifunctional pin: control loop compensation and chip enable as shown in Figure 1. An Enable Comparator monitors the COMP/EN pin voltage for chip enable. A signal level transistor is adequate to pull this pin down to ground and shut down AP3585A/B/C. A 120µA current source charges the external compensation network with 0.45V ceiling when this pin is released. If the voltage at COMP/EN pin exceeds 0.3V, the AP3585A/B/C initiates its soft start cycle. The 120µA current source keeps charging the COMP pin to its ceiling until the feedback loop boosts the COMP pin higher than 0.45V according to the feedback signal. The current source is cut off when VCOMP is higher than 0.45V during normal operation. 0.45V 120A + ERROR AMPLIFIER 0.3V + - ENABLE ENABLE COMP DISABLE ENABLE Figure 1. Chip Enable Function Soft Start A built-in Soft Start is used to prevent surge current from power supply input VIN during turn-on (Referring to the Functional Block Diagram). The error amplifier is a three-input device. Reference voltage VREF or the internal soft start voltage SS whichever is smaller dominates the behavior of the non-inverting inputs of the error amplifier. SS internally ramps up to 0.8V in 2ms for AP3585A (to 0.6V in 1.5ms for AP3585B and 0.6V in 2.4ms for AP3585C) after the soft start cycle is initiated. The ramp is created digitally, so there will be 100 small discrete steps. Accordingly, the output voltage will follow the SS signal and ramp up smoothly to its target level. The SS signal keeps ramping up after it exceeds the internal 0.8V for AP3585A (0.6V for AP3585B/C) reference voltage. However, the internal 0.8V for AP3585A (0.6V for AP3585B/C) reference voltage takes over the behavior of error amplifier after SS > VREF. When the SS signal climbs to its ceiling voltage (4.2V), AP3585A/B/C claims the end of soft start cycle and enables the under voltage protection of the output voltage. Figure 2 shows a typical start up interval for AP3585A/B/C where the COMP/EN pin has been released from a grounded (system shutdown) state. The internal 120µA current source starts charge the compensation network after the COMP/EN pin is released from ground at T1. The COMP/EN exceeds 0.3V and enables the AP3585A/B/C at T2. The COMP/EN continues ramping up the stays at 0.45V before the SS starts ramping at T3. The output voltage follows the internal SS and ramps up to its final level during T3 and T4. At T4, the reference voltage VREF takes over the behavior of the error amplifier as the internal SS crosses VREF. The internal SS keeps ramping up and stays at 4.2V at T5, where AP3585A/B/C asserts the end of soft start cycle. VIN 10V/Div VOUT 0.5V/Div COMP 0.5V/Div LGATE 10V/Div 1ms/Div Figure 2. Soft Start Behavior of AP3585A/B/C AP3585A/B/C Document number: DS36819 Rev. 1 - 2 9 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Functional Descriptions (Cont.) Power Input Detection The AP3585A/B/C detects PHASE voltage for the present of power input VIN when UGATE turns on the first time. If the PHASE voltage does not exceed 2.0V when UGATE turns on, AP3585A/B/C asserts that VIN is not ready and stops the soft start cycle. However, the internal SS continues ramping up to VDD. Another soft start is initiated after SS ramps up to VDD. The hiccup period is about 1ms. Figure 3 shows the start-up waveform where VIN does not present initially. NEW PRODUCT VIN 10V/Div VOUT 0.5V/Div I L 10A/Div LGATE 10V/Div 1ms/Div Figure 3. Soft Start Where VIN Does Not Present Initially Over Current Protection (OCP) A resistor ROCSET connected from LGATE pin sets the threshold. An internal current source IOCSET (10µA typically), flowing through ROCSET determines the OCP trigger point, which can be calculated using the following equation: I LIMIT I OCSET R OCSET R DS(ON) of the low side MOSFET If ROCSET is absent or larger than 40kΩ, AP3585A/B/C will work in build-in Maximum OCP Mode. Then the current limit will be: I LIMIT 375mV / RDS (ON ) Because the RDS(ON) of MOSFET increases with temperature, it is necessary to take this thermal effect into consideration in calculating OCP point. When OCP is triggered, both UGATE and LGATE will go low to stop the energy transfer to the load. Controller will try to restart in a hiccupped way. Figure 4 shows the hiccupped over current protection. Figure 4. Hiccupped Over Current Protection Over Voltage Protection (OVP) The feedback voltage is continuously monitored for over voltage protection. When OVP is triggered, LGATE will go high and UGATE will go low to discharge the output capacitor. The AP3585A/B/C provides full-time over voltage protection whenever soft start completes or not. The typical OVP threshold is 137.5% of the internal reference voltage VREF. AP3585A/B/C provides non-latched OVP. The controller will return to normal operation if over voltage condition is removed. Under Voltage Protection (UVP) The feedback voltage is also monitored for under voltage protection. The under voltage protection has 15µs triggered delay. When UVP is triggered, both UGATE and LGATE will go low. Unlike OCP, UVP is not a latched protection; controller will always try to restart in a hiccupped way. AP3585A/B/C Document number: DS36819 Rev. 1 - 2 10 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Functional Descriptions (Cont.) Thermal Shutdown If the junction temperature of the device reaches the thermal shutdown limit of +160°C, the PWM and the oscillator are turned off and UGATE and LGATE are driven low, turning off both MOSFETs. When the junction cools to the required level (+140°C nominal), the PWM initiates soft start as during a normal power-up cycle. NEW PRODUCT Output Voltage Selection The output voltage can be programmed to any level between the 0.8V (for AP3585A) internal reference (0.6V for AP3585B/C) to the 80% of VIN supply. The lower limitation of output voltage is caused by the internal reference. The upper limitation of the output voltage is caused by the maximum available duty cycle (80%). This is to leave enough time for over-current detection. Output voltage out of this range is not allowed. A voltage divider sets the output voltage (Refer to the typical application circuit). In real applications, choose R1 in 100Ω to 10kΩ range and choose appropriate R2 according to the desired output voltage. VOUT 0.8V R1 R2 R2 VOUT 0.6V R1 R2 R2 AP3585A AP3585B/C PCB Layout Considerations High speed switching and relatively large peak currents in a synchronous-rectified buck converter make the PCB layout a very important part of design. Switching current from one power device to another can generate voltage spikes across the impedances of the interconnecting bond wires and circuit traces. The voltage spikes can degrade efficiency and radiate noise, which results in over-voltage stress on devices. Careful component placement layout a printed circuit design can minimize the voltage spikes induced in the converter. Follow the below layout guidelines for optimal performance of AP3585A/B/C. 1. The turn-off transition of the upper MOSFET prior to turn-off, the upper MOSFET was carrying the full load current. During turn-off, current stops flowing in the upper MOSFET and is picked up by the low side MOSFET. Any inductance in the switched path generates a large voltage spike during the switching interval. Careful component selections, layout of the critical components, and use shorter and wider PCB traces help in minimizing the magnitude of voltage spikes. 2. The power components and the PWM controller should be placed firstly. Place the input capacitors, especially the high-frequency ceramic decoupling capacitors, close to the power switches. Place the output inductor and output capacitors between the MOSFETs and the load. Also locate the PWM controller near MOSFETs. 3. Use a dedicated grounding plane and use vias to ground all critical components to this layer. Use an immediate via to connect the component to ground plane including GND of AP3585A/B/C. 4. Apply another solid layer as a power plane and cut this plane into smaller islands of common voltage levels. The power plane should support the input power and output power nodes. Use copper filled polygons on the top and bottom circuit layers for the PHASE node. 5. The PHASE node is subject to very high dV/dt voltages. Stray capacitance between this island and the surrounding circuitry tend to induce current spike and capacitive noise coupling. Keep the sensitive circuit away from the PHASE node and keep the PCB area small to limit the capacitive coupling. However, the PCB area should be kept moderate since it also acts as main heat convection path of the lower MOSFET. 6. The PCB traces between the PWM controller and the gate of MOSFET and also the traces connecting source of MOSFETs should be sized to carry 2A peak currents. AP3585A/B/C Document number: DS36819 Rev. 1 - 2 11 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C NEW PRODUCT Ordering Information Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green. Package Temperature Range SO-8 Part Number Marking ID Packing AP3585AMTR-G1 3585AM-G1 4000/Tape & Reel AP3585BMTR-G1 3585BM-G1 4000/Tape & Reel AP3585CMTR-G1 3585CM-G1 4000/Tape & Reel AP3585AMPTR-G1 3585AMP-G1 4000/Tape & Reel AP3585BMPTR-G1 3585BMP-G1 4000/Tape & Reel AP3585CMPTR-G1 3585CMP-G1 4000/Tape & Reel -40°C to +85°C SO-8EP Marking Information (1) SO-8 (Top View) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number (Top View) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number AP3585A/B/C Document number: DS36819 Rev. 1 - 2 12 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C NEW PRODUCT Marking Information (Cont.) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number (2) SO-8EP (Top View) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number (Top View) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number (Top View) First and Second Lines: Logo and Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch Number AP3585A/B/C Document number: DS36819 Rev. 1 - 2 13 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SO-8 4.700(0.185) 5.100(0. 201) 7 9 0.320(0.013) TYP 1.350(0. 053) 1.750(0. 069) NEW PRODUCT ° ° 7° 9 0.600(0. 024) 0.725(0. 029) D 5.800(0.228) 6.200(0. 244) 1.270(0. 050) TYP D 20:1 0.100(0.004) 0.300(0.012) Option 1 0° 8° 1.000(0.039) TYP 3.800(0. 150) Option 1 4.000(0. 157) 0.300(0. 012) 0.150(0. 006) 0.250(0. 010) 0.510(0. 020) 1° 7° R0.150(0.006) 0.450(0. 017) 0.820(0. 032) Option 2 0.350(0. 014) TYP Note: Eject hole , oriented hole and mold mark is optional . AP3585A/B/C Document number: DS36819 Rev. 1 - 2 14 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Package Outline Dimensions (Cont. All dimensions in mm(inch).) Package Type: SO-8EP 2.750(0.108) 3.402(0.134) NEW PRODUCT (2) AP3585A/B/C Document number: DS36819 Rev. 1 - 2 15 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Suggested Pad Layout Package Type: SO-8 NEW PRODUCT (1) Dimensions Value AP3585A/B/C Document number: DS36819 Rev. 1 - 2 Z G X Y E (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050 16 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C Suggested Pad Layout (Cont.) Package Type: SO-8EP NEW PRODUCT (2) Y1 G Z X1 Y E Dimensions Value X Z G X Y X1 Y1 E (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) (mm)/(inch) 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 3.600/0.142 2.700/0.106 1.270/0.050 AP3585A/B/C Document number: DS36819 Rev. 1 - 2 17 of 18 www.diodes.com January 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3585A/B/C IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). NEW PRODUCT Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2012, Diodes Incorporated www.diodes.com AP3585A/B/C Document number: DS36819 Rev. 1 - 2 18 of 18 www.diodes.com January 2014 © Diodes Incorporated