APW7136BCI-TRL

APW7136A/B/C 1MHz, High-Efficiency, Step-Up Converter for 2 to 8 White LEDs Features • • • • • • • • • • • Wide Input Voltage from 2.7V to 6V 0.25V Reference Voltage Fixed 1MHz Switching Frequency High Efficiency up to 87% 100Hz to 100KHz PWM brightness control frequency Open-LED Protection Under Voltage Lockout Protection Over Temperature Protection 2KV, VMM > 200V 10ms, 1tr > 100mA Classification Reflow Profiles Profile Feature Average ramp-up rate (TL to TP) Preheat - Temperature Min (Tsmin) - Temperature Max (Tsmax) - Time (min to max) (ts) Time maintained above: - Temperature (TL) - Time (tL) Peak/Classification Temperature (Tp) Time within 5°C of actual Peak Temperature (tp) Ramp-down Rate Time 25°C to Peak Temperature Sn-Pb Eutectic Assembly 3°C/second max. 100°C 150°C 60-120 seconds 183°C 60-150 seconds See table 1 10-30 seconds 6°C/second max. 6 minutes max. Pb-Free Assembly 3°C/second max. 150°C 200°C 60-180 seconds 217°C 60-150 seconds See table 2 20-40 seconds 6°C/second max. 8 minutes max. Note: All temperatures refer to topside of the package. Measured on the body surface. C opyright © A NPEC Electronics Corp. Rev. A.2 - Jan., 2008 14 www.anpec.com.tw APW7136A/B/C Classification Reflow Profiles (Cont.) Table 1. SnPb Eutectic Process – Package Peak Reflow Temperatures Package Thickness