LA5744-HK-E ON Semiconductor

Ordering number : ENA0717C LA5744 Monolithic Linear IC Separately-Excited Step-Down LA5744 Electrical Characteristics at Ta = 25C, V = 5V O Ratings Parameter Symbol Conditions Unit min typ max Reference voltage V V = 15V, I = 1.0A 1.20 1.23 1.26 V OS IN O Efficiency V = 15V, I = 1.0A 83 % IN O Switching frequency f V = 15V, I = 1.0A 240 300 360 kHz IN O Line regulation VLINE V = 8 to 20V, I = 1.0A 40 100 mV O IN O Load regulation VLOAD V = 20V, I = 0.5 to 1.5A 10 30 mV O IN O Output voltage temperature V /Ta Designed target value. * 0.5 mV/C O coefficient Ripple attenuation factor RREJ f = 100 to 120Hz 45 dB Current limiter operating voltage I V = 15V 3.1 A S IN Thermal shutdown operating TSD Designed target value. * 165 C temperature Thermal shutdown Hysteresis TSD Designed target value. * 15 C width * Design target value : No measurement made. Package Dimensions unit : mm (typ) 3343 Pd max -- Ta 10.0 4.5 10.4MAX 8.0 3 Infinite heat sink jc=5C 10.0 1.3 1001001.5mm 3.6 7.5 3 6.0 50501.5mm 5.6 Al heat sink 4.0 3 30301.5mm mounting 3.3 torque 39Ncm No heat sink 2.0 silicone 1.75 0.9 grease 2.7 applied 0 15 -30-20 0 20 40 60 80 100 120 140 160 2 Ambient temperature, Ta -- C MSG07021 0.8 0.4 4.5 (1.6) 1.7 8.4 SANYO : 220-5HK Pin Assignment (1) V (2) SW (3) GND (4) V (5) SS IN OUT OS No.A0717-2/5 2.7 15.0 (8.8) 15.3 21.7 23.0 Allowable power dissipation, Pd max -- W