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LTC4090EDJC-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LTC4090EDJC-PBF Datasheet(HTML) 3 Page - Linear Technology |
3 / 28 page LTC4090/LTC4090-5 3 4090fa ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. HVIN = HVEN = 12V, BOOST = 17V, VIN = HPWR = 5V, VBAT = 3.7V, RPROG = 100k, RCLPROG = 2k and SUSP = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCLEN Input Current Limit Enable Threshold Voltage (VIN - VOUT) (VIN - VOUT) Rising (VIN - VOUT) Falling 20 –80 50 –50 80 –20 mV mV VUVLO Input Undervoltage Lockout VIN Rising ● 3.6 3.8 4 V ΔVUVLO Input Undervoltage Lockout Hysteresis VIN Rising – VIN Falling 130 mV High Voltage Regulator VHVIN HVIN Supply Voltage ● 660 V VOVLO HVIN Overvoltage Lockout Threshold ● 36 41.5 45 V IHVIN HVIN Bias Current Shutdown; HVEN = 0.2V Not Switching, HVOUT = 3.6V ● 0.01 130 0.5 200 μA μA VOUT Output Voltage with HVIN Present Assumes HVOUT to OUT Connection, 0 ≤ VBAT ≤ 4.2V (LTC4090) 3.45 VBAT + 0.3 4.6 V VOUT Output Voltage with HVIN Present Assumes HVOUT to OUT Connection (LTC4090-5) 4.85 5 5.15 V fSW Switching Frequency RT = 8.66k RT = 29.4k RT = 187k 2.1 0.9 160 2.4 1.0 200 2.7 1.15 240 MHz MHz kHz tOFF Minimum Switch Off-Time ● 60 150 ns ISW(MAX) Switch Current Limit Duty Cycle = 5% 3.0 3.5 4.0 A VSAT Switch VCESAT ISW = 2A 500 mV IR Boost Schottky Reverse Leakage SW = 10V, HVOUT = 0V 0.02 2 μA VB(MIN) Minimum Boost Voltage (Note 8) ● 1.5 2.1 V IBST BOOST Pin Current ISW = 1A 22 35 mA Battery Management IBAT Battery Drain Current VBAT = 4.3V, Charging Stopped Suspend Mode, SUSP = 5V VIN = 0V, BAT Powers OUT, No Load ● ● ● 15 22 60 27 35 100 μA μA μA VFLOAT VBAT Regulated Output Voltage IBAT = 2mA IBAT = 2mA; 0 ≤ TA ≤ 85°C 4.165 4.158 4.200 4.200 4.235 4.242 V V ICHG Constant-Current Mode Charge Current, No Load RPROG = 100k RPROG = 50k, 0 ≤ TA ≤ 85°C ● 465 900 500 1000 535 1080 mA mA ICHG(MAX) Maximum Charge Current 1.5 A VPROG PROG Pin Servo Voltage RPROG = 100k RPROG = 50k ● ● 0.98 0.98 1.00 1.00 1.02 1.02 V V kEOC Ratio of End-of-Charge Indication Current to Charge Current VBAT = VFLOAT (4.2V) ● 0.085 0.1 0.11 mA/mA ITRKL Trickle Charge Current BAT = 2V 35 50 60 mA VTRKL Trickle Charge Threshold Voltage BAT Rising ● 2.75 2.9 3.0 V VCEN Charge Enable Threshold Voltage (VOUT – VBAT) Falling; VBAT = 4V (VOUT – VBAT) Rising; VBAT = 4V 55 80 mV mV ΔVRECHRG Recharge Battery Threshold Voltage Threshold Voltage Relative to VFLOAT ● –65 –100 –135 mV |
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