UKK Package Variation: UKKMA 68-Lead Plastic QFN (7mm × 12mm) (Reference LTC DWG # 05-08-1862 Rev Ø) 0.70 ± 0.05 7.50 ± 0.05 2.35 ±0.05 0.38 REF 6.10 ± 0.05 5.50 REF 5.60 ±0.05 2.55 ±0.05 5.28 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 10.50 REF 11.10 ± 0.05 12.50 ± 0.05 APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 7.00 ± 0.10 PIN 1 NOTCH R = 0.30 TYP OR 0.35 × 45° CHAMFER 0.75 ± 0.05 5.50 REF 67 0.00 – 0.05 68 0.40 ±0.10 PIN 1 TOP MARK (SEE NOTE 6) 1 2 2.35 ±0.10 0.38 REF 2.55 ±0.10 12.00 ± 0.10 10.50 REF 5.28 ±0.10 5.60 ±0.10 R = 0.125 TYP (UKK68MA) QFN 1109 REV Ø 0.200 REF 0.25 ± 0.05 0.50 BSC BOTTOM VIEW—EXPOSED PAD SIDE VIEW NOTE: 1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE R = 0.10 TYP