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L5971D Datasheet(PDF) 3 Page - STMicroelectronics |
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L5971D Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 11 page ELECTRICAL CHARACTERISTICS (Tj = 25 °C, Cosc = 2.7nF, Rosc = 20kΩ,VCC = 12V, unless other- wise specified.) * Specification Refered to Tj from 0 to 125 °C Symbol Parameter Test Condition Min. Typ. Max. Unit DYNAMIC CHARACTERISTIC VI Operating input voltage range * 6.5 28 V Vo Output voltage Io = 0.5A 1.247 1.26 1.273 V Io = 0.2 to 1.5A 1.235 1.26 1.285 V Vcc = 6.5 to 25V * 1.21 1.26 1.31 V Vd Dropout voltage Vcc = 10V; Io = 1.5A 0.44 0.55 V * 0.88 V Il Maximum limiting current Vcc = 6.5 to 25V * 2 2.5 3 A Efficiency Vo = 3.3V; Io = 1.5A 85 % fs Switching frequency * 90 100 110 KHz SVRR Supply voltage ripple rejection Vi =Vcc+2VRMS;Vo =Vref; Io = 1.5A; f ripple = 100Hz 60 dB Voltage stability of switching frequency Vcc = 6.5 to 25V 3 6 % Temp. stability of switching frequency Tj = 0 to 125 °C4 % Soft Start Soft start charge current 30 40 50 µA Soft start discharge current 6 10 14 µA Inhibit VLL Low level voltage * 0.9 V IsLL Isource Low level * 5 15 µA THERMAL DATA Symbol Parameter Minidip SO16 Unit Rth(j-amb) Thermal Resistance Junction to ambient Max. 90 (*) 110 (*) °C/W (*) Package mounted on board. ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Minidip S016 V5,V3 V11,V4 Input voltage 30 V V4 V5,V6 Output DC voltage Output peak voltage at t = 0.1 µs f=200KHz -1 -5 V V I4 I5,I6 Maximum output current int. limit. V6-V5 V12-V11 14 V V6 V12 Bootstrap voltage 45 V V7,V2 V13,V3 Analogs input voltage (VCC = 12V) 10 V V8 V14 (VCC = 20V) 6 -0.3 V V Ptot Power dissipation a Tamb ≤ 60°C Minidip 1W SO16 0.8 W Tj,Tstg Junction and storage temperature -40 to 150 °C L5971 3/11 |
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