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L5970D Folha de dados(PDF) 5 Page - STMicroelectronics |
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L5970D Folha de dados(HTML) 5 Page - STMicroelectronics |
5 / 16 page L5970D Electrical characteristics 5/16 3 Electrical characteristics Table 4. Electrical characteristics ( TJ = 25°C, VCC = 12V, unless otherwise specified) Symbol Parameter Test condition Min Typ Max Unit VCC Operating input voltage range Vo = 1.235V; Io = 2A (1) 4.4 36 V RDS(on) Mosfet on Resistance (1) 0.250 0.5 Ω Il Maximum limiting current VCC = 4.4V to 36V 1.5 1.87 2.25 A fs Switching frequency (1) 212 250 280 KHz 225 250 275 KHz Duty cycle 0 100 % Dynamic characteristics (see test circuit ). V5 Voltage feedback 4.4V < VCC < 36V, 20mA < IO < 2A 1.220 1.235 1.25 V (1) 1.198 1.235 1.272 V h Efficiency VO = 5V, VCC = 12V 90 % DC characteristics Iqop Total operating quiescent current (1) 35 mA Iq Quiescent current Duty cycle = 0; VFB = 1.5V 2.5 mA Iqst-by Total stand-by quiescent current Vinh > 2.2V (1) 50 100 µA VCC = 36V; Vinh > 2.2V (1) 80 150 µA Inhibit INH threshold voltage Device ON 0.8 V Device OFF 2.2 V Error amplfier VOH High level output voltage VFB = 1V 3.5 V VOL Low level output voltage VFB = 1.5V 0.4 V Io source Source output current VCOMP = 1.9V; VFB = 1V 200 300 µA Io sink Sink output current VCOMP = 1.9V; VFB = 1.5V 11.5 mA |
Nº de peça semelhante - L5970D_07 |
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Descrição semelhante - L5970D_07 |
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