Product Change Notices PCN No.: 20110803 Date: September 1, 2011 Subject: Apply Cu bonding wire on AME5258 SOT-25 package This is to inform you that Cu bonding wire will be applied on the AME5258 SOT-25 series with below conditions: 1. AME to ensure "Electrical Characteristic" of Cu bonding wire package is 100% compliance AME5258 specifications. 2. AME qualified this new material package reliability. 3. The Part Number of each product is unchanged, but identification through D/C is available. This notification is for your information and concurrence. If you require AME Qual/Rel data or samples to qualify this change, please contact AME, Inc. directly or AME’s authorized Sales Representative or Distributor. Please note this PCN will be effective after 30 days of issuing date automatically If we do not receive any response, comment or questions from you within 30 calendar days. If you have any questions concerning this change, please contact: PCN Originator: Name: Bill Chou – Director, Engineering Department I Email: [email protected] Phone: +886.2.2627.8687 # 2110 Expected 1st Device Shipment Date: 10/1/2011 Effective Year/Work Week of Changed Product: NA AME5258 SOT-25 series Part Number – Au bonding wire AME5258 SOT-25 series Part Number – Cu bonding wire Reason of Change: Add Cu bonding wire to ensure the sufficient material source. Qual/Rel Report: Test Item HTOL ESD Method Description MIL-STD-883F 1005.8 TSTRESS=125℃, Duration= 1000hrs Biased MIL-STD-883G Human Body Model, Class 2, Method 3015.7 2kV minimum JEDEC Machine Model, Class B, EIA/JESD22-A115 200V minimum JESD22-C101C Charged Device Model, Class II, 200V minimum Latch-up MSL HTS JEDEC STANDARD Result Pass Pass Pass Pass Level A, 100mA minimum Pass J-STD-020C 85/85 168 hours, IR-reflow 3 cycles Peak Temp.= 260℃ MSL1 JESD22-A103D 150℃, 1000 hrs Pass 85℃,85% RH, 1000hrs Pass NO.78 MARCH 1997 IPC/JEDEC THT (85/85) JESD22-A101C PCT JESD22-A102D 121℃, 100% RH, 2atm, 168hrs Pass TCT JESD22-A104D -65℃ ~ 150℃, 500 cycles, DWELL=15min Pass Temp.=260℃, Duration=5sec Pass See IR reflow Profile, Perform 3 cycles test Pass Solderability J-STD-D02C IR-reflow JESD22-A113F REL-1265-E-A Cu Wire Reliability Report for AME5258 SOT-25 Series Product Approved by Prepared by Amy Shen Jess Lin Quality & Reliability Dept. Quality & Reliability Dept. Manager Engineer Conclusion: The AME5258 SOT-25 series product has successfully met AME’s reliability standard that is required on all AME, Inc products. Furthermore, QRA Dept. of AME, Inc monitors the reliability continuously to make sure that all AME5258 SOT-25 series product will still meet AME’s reliability standard in the future. Table of Contents: I、General Description II、Product Information III、Failures In Time Calculation IV、Product Reliability Test Result V、Package Reliability Test Result VI、IR-reflow Test Result I、General Description: The AME5258 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V, 2.5V and 3.3V. Supply current with no load is 300μA and drops to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the AME5258 ideally suited for single Li-Ion battery- powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. At very light load, the AME5258 will automatically skip pulses in pulse skip mode operation to maintain output regulation. The AME5258 is simple to use. As with standard LDO's,Input and output capacitor are required. The only other element is a small, low cost, 2.2μH inductor.Low output voltages are easily supported with the 0.6V feedback reference voltage. And 100% duty cycle when Vin II、Product Information: III、Failures In Time Calculation: Use HTOL test information mentioned in sectionⅣ, FIT (Failures In Time) can be calculated as below: FIT = ( x 2 (ν , CL ) × 10 9 ) /( 2 × S × H × AF ) = ( 4 .61 × 10 9 ) /( 2 × 77 × 1000 × 280 .59 ) =106.69 (pieces per 109 hours) @ 40℃ with 90% Confidence Level. Where AF is acceleration factor setting activation energy to 1.0eV as zero failure. IV、Product Reliability Test Result: Test Item Test Condition Sample Size / Failures Result HTOL TSTRESS=125℃ 77 pcs / 0 pcs Pass 3 pcs per pin pair / 0 pcs Pass 3 pcs per pin pair / 0 pcs Pass 3 pcs package pair / 0 pcs Pass 3 pcs per pin pair / 0 pcs Pass Duration= 1000hrs Biased, Read at 168/504/1000 hours ESD Human Body Model Pin-to-Pin test Class 2, 2kV minimum Machine Model Pin-to-Pin test Class B, 200V minimum Charged Device Model Class II, 200V minimum Latch-up Level A, 100mA minimum V、Package Reliability Test Result: Test Item Test Condition Sample Size / Failures Result MSL 85/85 168 hours 22 pcs / 0 pcs Level 1 77 pcs / 0 pcs Pass 77 pcs / 0 pcs Pass 77 pcs / 0 pcs Pass 77 pcs / 0 pcs Pass 5 pcs / 0 pcs Pass IR-reflow 3 cycles Peak Temp.= 260℃ IPC/JEDEC J-STD-020C HTS Precondition NOTE 2 Temp.=150℃ Duration=1000 hours Unbiased, Read at 1000 hours THT Precondition NOTE 2 Temp.=85℃, R.H.=85% Duration=1000 hours Unbiased, Read at 1000 hours PCT Precondition NOTE 2 Temp.=121℃, R.H.=100% 15PSIG, Unbiased Duration=168 hours Read at 168 hours TCT Precondition NOTE 2 -65℃ ~ 150℃ 500 cycles Unbiased, Read at 500 cycles Solderability Temp.=260℃ (lead-free) Duration=5sec NOTE 2: 85/85 168 hours + IR-reflow 3 cycles with Peak Temp.= 260℃ VI、IR-reflow Test Result: Test Item Test Condition Sample Size / Failures Result IR-reflow See IR reflow Profile 22 pcs / 0 pcs Pass Perform 3 cycles test IR reflow Profile: Profile Feature Average Ramp-Up Rate (Tsmax to Tp) Preheat - Temperature Min (Tsmin) - Temperature Max (Tsmax) - Time (tsmin to tsmax) Time maintained above - Temperature (TL) - Time (tL) Peak/Classification Temperature (Tp) Time within 5℃ of actual Peak Temperature (tp) Ramp-Down Rate Time 25℃ to Peak Temperature Pb-Free Assembly 3℃/second max. 150℃ 200℃ 60~180 seconds 217℃ 60~150 seconds 260℃ 20~40 seconds 6℃/second max. 8 minutes max.