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L6902D013TR 데이터시트(PDF) 6 Page - STMicroelectronics |
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L6902D013TR 데이터시트(HTML) 6 Page - STMicroelectronics |
6 / 11 page Electrical characteristics L6902 6/11 Doc ID 7332 Rev 9 5 Electrical characteristics Tj = 25°C, VCC = 12V, unless otherwise specified. Table 5. Electrical characteristics Symbol Parameter Test condition Min. Typ. Max. Unit VCC Operating input voltage range VO = 1.235V; IO = 1A 8 36 V Vd Dropout voltage VCC = 8V; IO = 1A 0.25 0.5 V IO Operating charging current Rsense = 0.1Ω 0.95 1 1.05 A (1) 0.92 1.08 A Il Maximum limiting current VCC = 8V to 36V 2 2.5 3.2 A fs Switching frequency (1) 212 250 287 kHz 225 250 275 kHz d Duty cycle 0 100 % Dynamic characteristics V5 Voltage feedback (FB) 8V < VCC < 36V, 20mA < IO < 1A 1.21 1.235 1.259 V (1) 1.198 1.235 1.272 V η Efficiency VO = 5V, VCC = 12V 90 % DC characteristics Iqop Total operating quiescent current (1) 3 5 mA Iq Quiescent current Duty cycle = 0; VFB = 1.5V 3 mA Voltage error amplifier VOH High level output voltage VFB = 1V 3.6 V VOL Low level output voltage VFB = 1.5 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 1 1.5 mA Ib Source bias current 2.5 4 μA DC open loop gain RL = 0 50 58 dB gm Transconductance Icomp = -0.1 to 0.1mA, Vcomp = 1.9V 2.3 mS Current error amplifier Voffs Input offset voltage VCS- = 1.8V; VCS+ = Vcomp 95 100 105 mV ICS+ CS+ output current IO = 1A, Rsense = 100mΩ, Vout < VCC -2V 1.5 3 µA ICS- CS- output current IO = 1A, Rsense = 100mΩ Vout < VCC -2V 1.5 3 µA |
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