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LTC4097 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4097 Datasheet(HTML) 3 Page - Linear Technology |
3 / 20 page LTC4097 3 4097f Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4097 is guaranteed to meet the performance specifications from 0°C to 85°C. Specifications over the – 40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: Failure to correctly solder the Exposed Pad of the package to the PC board will result in a thermal resistance much higher than 60°C/W. See SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VTRIKL Trickle Charge Threshold Voltage VBAT Rising Hysteresis ● 2.8 2.9 135 3V mV VUVDC DCIN Undervoltage Lockout Voltage From Low to High Hysteresis 4 4.22 200 4.4 V mV VUVUSB USBIN Undervoltage Lockout Voltage From Low to High Hysteresis 3.8 4 200 4.2 V mV VASD-DC VDCIN – VBAT Lockout Threshold Voltage VDCIN from High to Low, VBAT = 4.3V VDCIN from Low to High, VBAT = 4.3V 530 100 55 mV mV VASD-USB VUSBIN – VBAT Lockout Threshold Voltage VUSBIN from High to Low, VBAT = 4.3V VUSBIN from Low to High, VBAT = 4.3V 530 150 55 mV mV VSUSP, VHPWR VIL, Logic Low Voltage 0.5 V VIH, Logic High Voltage 1.2 V RSUSP SUSP Pulldown Resistance ● 3.4 MΩ RHPWR HPWR Pulldown Resistance ● 3.4 MΩ V⎯C⎯H⎯R⎯G ⎯C⎯H⎯R⎯G Output Low Voltage I⎯C⎯H⎯R⎯G = 5mA ● 62 150 mV ΔVRECHRG Recharge Battery Threshold Voltage VFLOAT – VRECHRG 70 100 130 mV tRECHRG Recharge Comparator Filter Time VBAT from High to Low 1.6 ms tITERM Termination Comparator Filter Time IBAT Drops Below Termination Threshold 3 ms RON-DC Power FET “ON” Resistance (Between DCIN and BAT) 420 mΩ RON-USB Power FET “ON” Resistance (Between USBIN and BAT) 470 mΩ TLIM Junction Temperature in Constant-Temperature Mode 115 °C IVNTC VNTC Pin Current VVNTC = 4.55V DCIN Powered VVNTC = 4.8V USBIN Powered 30 30 mA mA VVNTC VNTC Bias Voltage IVNTC = 250µA 4.25 5.5 V INTC NTC Input Leakage Current VNTC = 1V 0 ±1 µA VNTC-COLD Cold Temperature Fault Threshold Voltage Rising Threshold Hysteresis 0.765 • VVNTC 0.016 • VVNTC V V VNTC-HOT Hot Temperature Fault Threshold Voltage Falling Threshold Hysteresis 0.349 • VVNTC 0.016 • VVNTC V V VNTC-DIS NTC Disable Threshold Voltage NTC Input Voltage to GND (Falling) Hysteresis 0.017 • VVNTC 0.01 • VVNTC V V ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 5V, VUSBIN = 5V, HPWR = 5V, NTC = 0V, RIDC = 1kΩ, RIUSB = 2kΩ, RITERM = 2kΩ unless otherwise noted. Thermal Considerations. Note 4: Supply current includes IDC and ITERM pin current (approximately 100µA each) but does not include any current delivered to the battery through the BAT pin. Note 5: Supply current includes IUSB and ITERM pin current (approximately 100µA each) but does not include any current delivered to the battery through the BAT pin. Note 6: Guaranteed by long term current density limitations. Note 7: VCC is greater of DCIN or USBIN |
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