A Product Line of Diodes Incorporated AP3790 PUMP EXPRESS NEW PRODUCT Description TM COMPATIBLE AC/DC PSR CONTROLLER Pin Assignments The AP3790 is a high accuracy and low cost switching mode power supply controller to drive power bipolar transistor for battery charger/adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). The controller uses adaptive source current to optimize driving current to reduce driving loss. The system operating frequency reduces linearly from heavy load to light load in each interval of the pPFM, and enters constant current mode when the load current is equal to the maximum system output current. (Top View) CPC 1 8 NC GND 2 7 OUT FB 3 6 NC VCC 4 5 CS The output voltage of AP3790 can be adjusted based on the patterns of load current aligned to MTK Pump Express protocol. The AP3790 provides operating frequency Jitter function from light to full load range to improve the power supply EMI performance. The AP3790 also has built-in fixed cable voltage drop compensation (6% of nominal system output voltage) and adjustable line voltage compensation. SO-8 Features Compatible to MediaTek Pump ExpressTM Protocol Ultra-Low Standby Power Consumption Valley-turn On to Reduce Switching Loss and Benefit for EMI Piece-wise Frequency Reduction to Efficiency and Suppress Audio Noise ±5% Constant Voltage Accuracy for 5V Output Audio Noise Suppression Open Circuit Protection (OCkP) Current Sense Resistor Short Protection Over Voltage Protection (OVP) Applications Over Temperature Protection (OTP) Short Circuit Protection (SCP) with Hiccup Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) The AP3790 can work individually to achieve Ultra-Low standby power under 5V output. The AP3790 is packaged in SO-8. Adapters/Chargers Notes: Enhance Conversion 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. AP3790 Document number: DS37221 Rev. 3 - 2 1 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Typical Applications Circuit FR1 L1 TR1 D1 C7 R12 R3 D4~D7 C1 + C2 + D2 + C3 R4 + C4 R1 NEW PRODUCT R11 R10 L2 5V/1A D3 C5 Q1 AP3790 6 1 4 8 VCC OUT CPC C6 2 GND FB CS 7 R13 3 5 R14 R2 Pin Descriptions Pin Number Pin Name Function 1 CPC A capacitor is connected to this pin to form a low pass filter for cable voltage drop compensation, audio noise suppression and detecting the patterns of load current to change the output voltage and current 2 GND The ground of the controller 3 FB 4 VCC 5 CS 7 OUT 6, 8 NC AP3790 Document number: DS37221 Rev. 3 - 2 The CV and CC regulation are realized base on the voltage sampling of this pin VCC supply pin for the controller. A capacitor with low ESR should be placed as close as possible to this pin Current senses pin of IC. The CS pin will turn off the power transistor when the CS pin voltage reaches turn off threshold. The OUT pin is used to drive the external power transistor Not connected 2 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Functional Block Diagram VCC 4 NEW PRODUCT OVP OCkP SCP OTP RCS Short FB 3 tONS Detection Regulator & Bias VLOAD CS 5 2 Pro tONS Constant Voltage Control Cable Compensation Line Compensation UVLO GND 7 Vally-on and Driver OUT 5V~3.6V_select Constant Current Control Frequency Jitter tONS 5V~3.6V_select tONS Load Detection VLOAD Output Voltage Selection 5V~3.6V_select 1 CPC Absolute Maximum Ratings (Note 4) Symbol VCC VCS, VCPC VFB Rating Unit Supply Voltage Parameter -0.3 to 35 V Voltage on CS, CPC Pin -0.3 to 7 V FB Input Voltage -0.3 to 8 V Internally Limited A Operating Junction Temperature -40 to +150 °C TSTG Storage Temperature -65 to +150 °C TLEAD Lead Temperature (Soldering, 10 sec) +300 °C Thermal Resistance (Junction to Ambient) 165 °C/W ESD (Human Body Model) 4000 V ESD (Machine Model) 300 V ISOURCE TJ θJA ESD Note 4: Source Current from OUT Pin 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. AP3790 Document number: DS37221 Rev. 3 - 2 3 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Electrical Characteristics Symbol (@VCC = 12V, TA = +25°C, unless otherwise specified.) Parameters Conditions Min Typ Max Unit STARTUP AND UVLO SECTION VTH_ST VOPR(MIN) Startup Threshold – 13 15.5 18 V Minimal Operating Voltage – 5.2 5.8 6.4 V 0 0.2 0.6 435 500 565 NEW PRODUCT STANDBY CURRENT SECTION IST ICC_QST Startup Current Quiescent Current VCC = VTH_ST-1V before startup Static current @ OUT pin no load μA DRIVING OUTPUT SECTION RDS(ON) IOUT(MAX) Sink Resistance 1V @ OUT pin 2 2.4 2.8 Ω The Maximum Source Current – 25 32 39 mA – 691 768 845 μs 37% to 100% full load 5.4 6 6.6 μs 4% to 37% full load 3.2 3.6 4.0 μs 0% to 4% full load (Note 5) 2.25 2.5 2.75 μs 2 3 4 % μs OPERATING FREQUENCY SECTION (5% Load to Full Load) tOFF(MAX) tSAMPLE Maximum Off Time Sampling Time FREQUENCY JITTER △VCS/VCS VCS Modulation 7% to 100% full load VCS Modulation Period – 230 256 282 37% to 100% full load 830 900 970 4% to 37% full load 550 600 650 0% to 4% full load (Note 5) 320 350 380 – 160 200 240 VCS_H and VCS_M 425 500 575 VCS_L (Note 5) 170 200 230 VFB@5V 3.94 4.0 4.06 [email protected] 3.75 3.85 3.95 3.61 3.7 3.79 [email protected] 3.47 3.56 3.65 [email protected] 3.32 3.41 3.5 VFB@4V 3.18 3.26 3.34 tMOD CURRENT SENSE SECTION VCS_H VCS_M Current Sense Threshold VCS_L RLINE Built-in Line Compensation Resistor tLEB Leading Edge Blanking mV Ω ns CONSTANT VOLTAGE SECTION [email protected] Feedback Threshold Voltage AP3790 Document number: DS37221 Rev. 3 - 2 – 4 of 17 www.diodes.com V October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Electrical Characteristics Symbol (@VCC = 12V, TA = +25°C, unless otherwise specified.) (Cont.) Parameters Min Typ Max 3.03 3.11 3.19 2.89 2.96 3.03 560 700 840 kΩ 5 6 7 % VFB=2V (Note 5) 0.47 0.5 0.53 – (Note 5) 3.61 3.68 3.75 V VCPC control_L – 59 – VCPC control_H – 100 – 400 500 600 220 300 380 tON_C 50 100 150 tOFF_D 50 100 150 – 180 210 240 ms [email protected] Feedback Threshold Voltage Conditions – [email protected] RFB NEW PRODUCT VCABLE/VOUT% FB Pin Input Resistance VFB=4V Cable Compensation Ratio@5V – Unit V CONSTANT CURRENT SECTION tONS/tSW Maximum Secondary Duty Cycle DYNAMIC SECTION VUV_H Under Voltage of Feedback Pin for VCS_H OUTPUT VOLTAGE SELECTION SECTION VCPC_L Current Control Threshold VCPC_H tON_A tON_B Current Control Pattern Time tWDT Watch Dog Time (Note 5) mV ms PROTECTION FUNCTION SECTION VFB(OVP) Over Voltage Protection – 7.1 7.5 7.9 V VCC(OVP) Over Voltage Protection at VCC Pin – 27 30 33 V VOUT(OVP) Over Voltage Protection at OUT Pin – 3.4 3.65 3.9 V VFB(SCP) Short Circuit Protection VFB @ Hiccup 1.61 1.7 1.79 V tSCP Maximum Time under VFB(SCP) – 116 128 140 ms TOTP Shutdown Temperature – +128 +140 +152 °C THYS Temperature Hysteresis – +36 +40 +44 °C Note 5: Guaranteed by design. AP3790 Document number: DS37221 Rev. 3 - 2 5 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description FR1 L1 TR1 D1 C7 R12 R3 D4~D7 C1 + C2 + D2 + C3 R4 + C4 R1 R11 NEW PRODUCT R10 L2 5V/1A D3 C5 Q1 AP3790 6 1 4 8 VCC OUT CPC C6 2 GND FB 7 R13 3 CS 5 R14 R2 Figure 1. 7.5W Battery Charger Figure 1 is the typical application circuit of AP3790, which is a conventional Flyback converter with a 3-winding transformer---primary winding (NP), secondary winding (NS) and auxiliary winding (NAUX). The auxiliary winding is used for providing VCC supply voltage for IC and sensing the output voltage feedback signal to FB pin. Figure 2 shows the typical waveforms which demonstrate the basic operating principle of AP3790 application. And the parameters are defined as following. IP---The primary side current IS ---The secondary side current IPK---Peak value of primary side current IPKS---Peak value of secondary side current VSEC---The transient voltage at secondary winding VS---The stable voltage at secondary winding when rectification diode is in conducting status, which equals the sum of output voltage V OUT and the forward voltage drop of diode VAUX---The transient voltage at auxiliary winding VA--- The stable voltage at auxiliary winding when rectification diode is in conducting status, which equals the sum of voltage VCC and the forward voltage drop of auxiliary diode tSW ---The period of switching frequency tONP ---The conduction time when primary side switch is “ON” tONS ---The conduction time when secondary side diode is “ON” tOFF ---The dead time when neither primary side switch nor secondary side diode is “ON” tOFFS --- The time when secondary side diode is “OFF” AP3790 Document number: DS37221 Rev. 3 - 2 6 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) IPK IP IPKS tOFFS NEW PRODUCT IS VA VAUX tSW VS VSEC tONS tONP tOFF Figure 2. The Operation Waveform of Flyback PSR System For primary-side regulation, the primary current ip(t) is sensed by a current sense resistor RCS (R2 as shown in Figure 1). The current rises up linearly at a rate of: dip(t ) VIN (t ) dt LM (1) As illustrated in Figure 2, when the current ip(t) rises up to IPK, the switch Q1 turns off. The constant peak current is given by: I PK VCS RCS (2) The energy stored in the magnetizing inductance LM each cycle is therefore: Eg 1 2 LM I PK 2 (3) So the power transferring from the input to the output is given by: P 1 2 LM I PK f SW 2 (4) Where, the fSW is the switching frequency. When the peak current IPK is constant, the output power depends on the switching frequency fSW. Constant Voltage Operation As to constant-voltage (CV) operation mode, the AP3790 detects the auxiliary winding voltage at FB pin to regulate the output voltage. The auxiliary winding voltage is coupled with secondary side winding voltage, so the auxiliary winding voltage at D1 conduction time is: V AUX N AUX Vo Vd NS (5) Where the Vd is the diode forward voltage drop. AP3790 Document number: DS37221 Rev. 3 - 2 7 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) NEW PRODUCT See equation 5 0V tSAMPLE tONS Figure 3. Auxiliary Voltage Waveform The voltage detection point is at a constant delay time of the D1 on-time. The constant delay time is changed with the different primary peak current. The CV loop control function of AP3790 then generates a D1 off-time to regulate the output voltage. Constant Current Operation The AP3790 can work in constant-current (CC) mode. Figure 2 shows the secondary current waveforms. In CC operation mode, the CC control loop of AP3790 will keep a fixed proportion between D1 on-time tONS and D1 off-time tOFFS. The fixed proportion is tONS 4 tOFFS 4 (6) The relationship between the output current and secondary peak current I PKS is given by: tONS 1 I OUT I PKS 2 tONS tOFFS (7) As to tight coupled primary and secondary winding, the secondary peak current is I PKS NP I PK NS (8) Thus the output constant-current is given by: I OUT tONS 1 NP 2 N I PK P I PK 2 NS tONS tOFFS 8 N S (9) Therefore, AP3790 can realize CC mode operation by constant primary peak current and fixed diode conduction duty cycle. Multiple Segment Constant Peak Current As to the original PFM PSR system, the switching frequency decreases with output current decreasing, which will encounter audible noise issue since switching frequency decreases to audio frequency range, about less than 20kHz. In order to avoid audible noise issue, AP3790 uses 3-segment constant primary peak current control method. At constant voltage mode, the current sense threshold voltage is multiple segment with different loading, as shown in Figure 4, which are VCS_H for high load, VCS_M for medium load and VCS_L for light load. At constant current mode, the peak current is still V CS_H. AP3790 Document number: DS37221 Rev. 3 - 2 8 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) VCS_REF VCS_H High Load VCS_M Medium Load NEW PRODUCT VCS_L Light Load IOMAX fsw 60kHz 22kHz 12kHz 4kHz 2kHz 4% 37% 100% IOMAX Figure 4. Multiple Segment Peak Current at CV Mode It can be seen from Figure 4, with multiple segment peak current control, AP3790 power system can get the good audible noise performance. Leading Edge Blanking (LEB) Time When the power switch is turned on, a turn-on spike will occur on the sense-resistor. To avoid false turn off switch, a 500ns leading-edge blanking is built in. During this blanking time, the current sense comparator is disabled and the external power switch cannot be turned off. Furthermore, because of multiple segment peak current design, the required maximum on time tONP changes with different load condition. Therefore the LEB time parameter also changes with different load condition. Adjustable Line Compensation and Fixed Cable Compensation The AP3790 power system can adjust line compensation by changing the upper resistor at FB pin. The line compensation capability is increased by decreasing the resistance of the upper FB resistor. Cable compensation is fixed in AP3790. Valley Turn-on When the off time (tOFF) is lower than 32s, AP3790 power system can work with valley turn on. It can reduce BJT switching on power losses which is result from the equivalent output capacitance. At the same time, because of valley turn on the switching frequency has the random jitter feature, which will be benefit for conductive EMI performance. And valley turn on can also reduce the power switch turn on spike current and then result in the better radiative EMI performance. Frequency Jitter Even though the valley turn on function can lead the random frequency jitter feature, an active frequency jitter function is added to AP3790 to ensure the frequency jitter performance in the whole loading condition. By adjusting the VCS_REF with deviation of 3.0% in a random pulse sequence, the active frequency jitter can be realized with 256μs repetitive cycles. AP3790 Document number: DS37221 Rev. 3 - 2 9 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) Output Voltage Selection Section The output voltage of AP3790 can be adjusted based on the patterns of load current aligned to MTK Pump Express protocol. The voltage of CPC pin of AP3790 is changed with the load current. AP3790 can detect the load current patterns through CPC pin. The pattern of decrease output voltage is shown in Figure 5 and the pattern of increase output voltage is shown in Figure 6. NEW PRODUCT tON_B tON_C tON_A VCPC_H VCPC_L tOFF_D Figure 5 The Pattern of Decrease Output Voltage tON_C tON_B tON_A VCPC_H VCPC_L tOFF_D Figure 6 The Pattern of Increase Output Voltage Just shown as Figure 7, the voltage is changed step by step among 4.8V and 3.6V. When the AP3790 detects one full pattern of decrease output voltage, the output voltage will decrease 0.2V from the current voltage level. When the output voltage is 3.6V, the pattern of decrease output voltage is invalid. When the AP3790 detects one full pattern of increase output voltage, the output voltage will increase 0.2V from the current voltage level. When the output voltage is 5V, the pattern of decrease output voltage is invalid. At any voltage level among 4.8V to 3.6V, once the WDT function (VCPC<VCPC_L and the time of duration is more than tWDT.) is triggered, the output voltage will return to 5V directly. And At any voltage level among 4.8V to 3.6V, once any protect function is triggered, the output voltage will return to 5V directly. WDT 5V 4.8V 4.6V 4.4V Control Pattern 4.2V 4.0V WDT 3.8V 3.6V Figure 7. Voltage State Flow AP3790 Document number: DS37221 Rev. 3 - 2 10 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) NEW PRODUCT CCM Protection The AP3790 is designed to operate in discontinuous conduction mode (DCM) in both CV and CC modes. To avoid operating in continuous conduction mode (CCM), the AP3790 detects the falling edge of the FB input voltage on each cycle. If a 0V falling edge of FB is not detected, the AP3790 stops working. OVP & OCkP The AP3790 includes output over-voltage protection (OVP) and open circuit protection (OCkP) circuitry. If the voltage at FB pin exceeds 7.5V, 90% above the normal detection voltage, or the 0V falling edge of the FB input can’t be monitored, the AP3790 immediately shuts down and keeps the internal circuitry enabled to discharge the VCC capacitor to the UVLO turn-off threshold. After that, the device returns to the start state and a start-up sequence ensues. Short Circuit Protection (SCP) Short Circuit Protection (SCP) detection principle is similar to the normal output voltage feedback detection by sensing FB pin voltage. When the detected FB pin voltage is below VFB(SCP) for a duration of about tSCP, the SCP is triggered. Then the AP3790 enters hiccup mode that the IC immediately shuts down and then restarts, so that the VCC voltage changes between VTH_ST and UVLO threshold until VFB(SCP) condition is removed. As to the normal system startup, the time duration of FB pin voltage below VFB(SCP) should be less than tSCP to avoid entering SCP mode. But for the output short condition or the output voltage below a certain level, the SCP mode should happen. Figure 8 is the AP3790 normal start-up waveform that the voltage of FB pin is above VFB(SCP) during tSCP after VCC gets to the VTH_ST, which doesn’t enter the SCP mode. As shown in Figure 9, VOUT is short and the voltage of FB pin is lower than VFB(SCP) over than tSCP, the AP3790 triggers the SCP and enters the hiccup mode. tSCP VTH_ST VCC VFB(SCP) VFB 5V VOUT(SCP) VOUT Figure 8. Normal Start-up AP3790 Document number: DS37221 Rev. 3 - 2 11 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Operation Principle Description (Cont.) tSCP VTH_ST VCC NEW PRODUCT VOPR(MIN) VFB(SCP) VFB VOUT 0V Figure 9. Short Circuit Protection (SCP) and Hiccup Mode OTP If the junction temperature reaches the threshold of +140⁰C, AP3790 shuts down immediately. Before VCC voltage decreases to UVLO, if the junction temperature decreases to +100⁰C, AP3790 can recover to normal operation. If not, the power system enters restart Hiccup mode until the junction temperature decreases below +100⁰C. Performance Characteristics 2.5 17.0 16.5 2.0 Startup Current (A) Startup Voltage (V) 16.0 15.5 15.0 14.5 14.0 1.5 1.0 0.5 13.5 13.0 -40 -20 0 20 40 60 80 100 120 0.0 -40 140 -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) o Ambient Temperature ( C) Figure 10. Startup Voltage vs. Ambient Temperature AP3790 Document number: DS37221 Rev. 3 - 2 Figure 11. Startup Current vs. Ambient Temperature 12 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Performance Characteristics (Cont.) 700 8 Operating Current (A) Minimum Operating Voltage (V) 6 5 600 550 500 4 3 -40 450 -20 0 20 40 60 80 100 120 400 -40 140 -20 0 20 40 60 80 100 120 140 o o Ambient Temperature ( C) Ambient Temperature ( C) Figure 12. Minimum Operating Voltage vs. Ambient Temperature Figure 13. Operating Current vs. Ambient Temperature 10 4.4 9 4.2 Sample Time (s) Feedback Voltage (V) 8 4.0 3.8 7 6 5 3.6 4 3.4 -40 -20 0 20 40 60 80 100 120 3 -40 140 -20 0 o 40 60 80 100 120 140 Ambient Temperature ( C) Figure 14. Feedback Voltage vs. Ambient Temperature Figure 15. Sample Time vs. Ambient Temperature 1000 30 900 Current Sense Voltage (mV) 32 28 26 24 800 700 600 500 22 20 -40 20 o Ambient Temperature ( C) Source Current (mA) NEW PRODUCT 650 7 -20 0 20 40 60 80 100 120 400 -40 140 AP3790 Document number: DS37221 Rev. 3 - 2 0 20 40 60 80 100 120 140 Ambient Temperature ( C) Ambient Temperature ( C) Figure 16. Source Current vs. Ambient Temperature -20 o o Figure 17. Current Sense Voltage vs. Ambient Temperature 13 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Performance Characteristics (Cont.) 1000 Input Resistance of FB Pin (k) Line Compensation Resistance () NEW PRODUCT 350 300 250 200 150 100 -40 -20 0 20 40 60 80 100 120 800 600 400 200 0 -40 140 -20 0 o 20 40 60 80 100 120 140 o Ambient Temperature ( C) Ambient Temperature ( C) Figure 18. Line Compensation Resistance vs. Ambient Temperature Figure 19. Input Resistance of FB Pin vs. Ambient Temperature Ordering Information AP3790 X XX- G1 Product Name Package Packing RoHS/Green M : SO-8 TR : Tape & Reel G1 : Green Package Temperature Range Cable Compensation Voltage SO-8 -40 to +150C 6% Part Number AP3790MTR-G1 Marking ID 3790M-G1 Packing 4000/Tape & Reel Marking Information (Top View) : Logo XXXXM-G1: Marking ID Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code XX: 7th and 8th Digits of Batch No. AP3790 Document number: DS37221 Rev. 3 - 2 14 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 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 8° 8° ~ 9° 7° 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 0.300(0. 012) R0.150(0.006) 0.100(0. 004) 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) Option 1 0° 8° 1° 7° 0.510(0. 020) 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 . AP3790 Document number: DS37221 Rev. 3 - 2 15 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 Suggested Pad Layout (1) Package Type: SO-8 NEW PRODUCT Grid placement courtyard G Z Y E X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch) Value 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050 AP3790 Document number: DS37221 Rev. 3 - 2 16 of 17 www.diodes.com October 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3790 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). 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LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 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 © 2014, Diodes Incorporated www.diodes.com AP3790 Document number: DS37221 Rev. 3 - 2 17 of 17 www.diodes.com October 2014 © Diodes Incorporated