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LTC4099 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4099 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 36 page  LTC4099 3 4099f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS hCLPROG (Note 4) Ratio of Measured VBUS Current to CLPROG Program Current 100mA Mode 500mA Mode 620mA Mode 790mA Mode 1A Mode 1.2A Mode Low Power Suspend Mode High Power Suspend Mode 220 1200 1540 1980 2420 3080 10.9 65 mA/mA mA/mA mA/mA mA/mA mA/mA mA/mA mA/mA mA/mA IVOUT VOUT Current Available Before Discharging Battery 100mA Mode, BAT = 3.3V 500mA Mode, BAT = 3.3V 620mA Mode, BAT = 3.3V 790mA Mode, BAT = 3.3V 1A Mode, BAT = 3.3V 1.2A Mode, BAT = 3.3V Low Power Suspend Mode High Power Suspend Mode 0.23 1.6 135 672 840 1080 1251 1550 0.30 2.16 0.41 2.46 mA mA mA mA mA mA mA mA VCLPROG CLPROG Servo Voltage in Current Limit Switching Modes Suspend Modes 1.18 102 V mV VUVLO VBUS Undervoltage Lockout Rising Threshold Falling Threshold 3.90 4.30 4.00 4.35 V V VDUVLO VBUS to BAT Differential Undervoltage Lockout VBUS–BAT Rising Threshold VBUS–BAT Falling Threshold 200 50 mV mV VOUT VOUT Voltage Switching Modes, 0V < BAT ≤ 4.2V, IVOUT = 0mA, Battery Charger Off 3.5 BAT + 0.3 4.7 V USB Suspend Modes, IVOUT = 250μA 4.5 4.6 4.7 V fOSC Switching Frequency 1.96 2.25 2.65 MHz RPMOS PMOS On-Resistance 0.18 Ω RNMOS NMOS On-Resistance 0.30 Ω IPEAK Peak Inductor Current Clamp 500mA to 1.2A Input Limit Modes 3 A RSUSP Suspend LDO Output Resistance 16 Ω Battery Charger VFLOAT BAT Regulated Output Voltage 4.200V Setting Selected by I2C l 4.179 4.165 4.200 4.200 4.221 4.235 V V 4.100V Default Setting l 4.079 4.065 4.100 4.100 4.121 4.135 V V ICHG_RANGE Constant-Current Mode Charge Current Range ILIM2/1/0 = 101, Selectable by I2C 500-1200 mA ICHG500mA Zero Scale Battery Charge Current ILIM2/1/0 = 101, ICHARGE2/1/0 = 000 475 500 525 mA ICHG1200mA Full-Scale Battery Charge Current ILIM2/1/0 = 101, ICHARGE2/1/0 = 111 1140 1200 1260 mA ICHG_STEP Charge Current I2C Step Size ILIM2/1/0 = 101 100 mA IBATQ Battery Drain Current VBUS > VUVLO, PowerPath Switching Regulator On, Battery Charger Off, IVOUT = 0μA 3.7 5 μA VBUS = 0V, IVOUT = 0μA (Ideal Diode Mode) 23 35 μA VPROG,TRKL PROG Pin Servo Voltage in Trickle Charge BAT < VTRKL 0.100 V hPROG Ratio of IBAT to PROG Pin Current 1030 mA/mA ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp- erature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, DVCC = 3.3V, RPROG = 1.02k, RCLPROG = 3.01k, unless otherwise noted. |
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