Ordering number : ENA1438B LA5756 Monolithic Linear IC LA5756 Electrical Characteristics at Ta = 25C, V = 3.3V O Ratings Parameter Symbol Conditions Unit min typ max Reference voltage V 1.235 1.26 1.285 V OS Efficiency 78 % Switching frequency f V = 15V, I = 1.0A 60 80 100 kHz IN O Line regulation VLINE V = 8 to 20V, I=1.0A 40 100mV O IN O Load regulation VLOAD V = 15V, I = 0.5 to 1.5A 10 30 mV O IN O Output voltage temperature coefficient V /Ta Designed target value* 0.5 mV/C O Ripple attenuation factor RREJ f = 100 to 120Hz 45 dB Current limiter operating voltage I V = 15V 4.2 A S IN Thermal shutdown operating temperature TSD Designed target value* 165 C Thermal shutdown hysteresis width TSD Designed target value* 15 C * Designed target value: No measurement made. Package Dimensions unit : mm (typ) 3376 Pd max -- Ta 10.0 10.4 MAX 4.5 3.6 10.0 1.3 8.0 3 Infinite heat sink jc=5C 1001001.5mm 7.5 3 6.0 50501.5mm 5.6 Al heat sink 4.0 3 30301.5mm mounting 3.3 torque 0.9 39Ncm No heat sink 2.0 silicone 1.75 grease applied 12 5 0.8 0.4 0 3.15 -30-20 0 20 40 60 80 100 120 140 160 (1.6) 1.7 Ambient temperature, Ta -- C MSG07021 7.05 SANYO : 220-5HMDB Pin Assignment (1)V (2)SW (3)GND (4)V (5)SS IN OUT OS No.A1438-2/4 2.7 15.0 (8.8) 15.5 21.3 Allowable power dissipation, Pd max -- W