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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DA9021 датащи(PDF) 37 Page - Dialog Semiconductor |
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DA9021 датащи(HTML) 37 Page - Dialog Semiconductor |
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37 / 142 page  DA9021/22 System PMIC with high efficiency USB power manager Datasheet Revision 2.5 17-Feb-2017 CFR0011-120-00 Rev 5 37 of 142 © 2017 Dialog Semiconductor 8.9 Battery charger Table 24: Battery charger Supply mode Symbol Test conditions Min Typ Max Unit VBUS VUSB 4.4 5.5 V USB2.0 host/hub mode (default) ISET_USB 70 Note 1 1300 mA Note 1 Programmable in 10 mA increments from 70 mA to 120 mA and 100 mA increments from 400 mA to 1300 mA 8.9.1 Charger buck Table 25: Charger buck Parameter Symbol Test conditions Min Typ Max Unit Input voltage VCENTER 4.4 5.6 V Output capacitor COUT 30 μF ESR of output capacitor f > 100 kHz 20 mΩ Inductor value LBUCK -30 % 4.7 +30 % µH Inductor resistance RESR f = 1 MHz 100 150 mΩ Output voltage VDDOUT IOUT= 1000 mA 3.6 VBAT + 200 mV V Ripple voltage IOUT = 1000 mA 10 mV Line regulation transient VTRLINE VBUS_PROT = 4.4 V - 5.5 V, IOUT = 1000 mA tr = tf = 10 µs 10 mV Output current IMAX 1300 mA Current limitation ILIM 2-wire programmable (different step sizes for different ranges) 70 1300 mA Quiescent current in OFF mode 1 μA Quiescent current in synchronous rectification mode 5 mA F_BUCK Frequency of operation 2 MHz Switching duty cycle 10 100 % Ton Turn on time 2.2 m Efficiency IOUT = 1000 mA VBUS_PROT = 5 V 85 90 % R_PMOS PMOS on resistance incl. pin and routing 0.08 0.15 0.2 Ω R_NMOS NMOS on resistance incl. pin and routing 0.15 0.25 0.3 Ω |
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