Datasheet LTC4110 (Analog Devices) - 5

LTC4110
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Unless otherwise specifi ed, VDCIN = VDCOUT = VDCDIV = 12V, VBAT = 8.4V, GND = SGND = CLP = CLN = SHDN = 0V and RVREF = 49.9k. All currents into device pins are positive and all currents out of device pins are negative. All voltages are referenced to GND, unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input and Battery Ideal Diodes and Switches
VFR Forward Regulation Voltage (VDCIN-VDCOUT, 2.7V ≤ VDCIN ≤ 19V l 10 20 32 mV VBAT -VDCOUT) VREV Reverse Voltage Turn-Off Voltage 2.7V ≤ VDCIN ≤ 19V l –30 –18 –8 mV (VDCIN-VDCOUT, VBAT -VDCOUT) VGON “ON” Gate Clamping Voltage (VDCIN-VINID, IINID, IBATID = 1μA 7 8.3 9.7 V VBAT -VBATID) VGOFF “OFF” Gate Voltage (VDCIN-VINID, VBAT-VBATID) IINID, IBATID = –10μA 0.25 V VSHDN = 0V and VDCIN (Shutdown) VFO BATID Fast-On Voltage Comparator Threshold IBATID > 500μA 45 100 mV INID Pin Delay Times CINID = 10nF DCIN is Switched Between 12.2V and 11.8V tIIDON Turn “ON” From DCOUT – VGOFF to DCOUT –6V 450 700 μs tIIDOFF Turn “OFF” From DCOUT – VGON to DCOUT –1.5V 8 20 μs BATID Pin Delay Times CBATID = 2.5nF BAT is Switched Between 12.2V and 11.8V tBIDON Turn “ON” From DCOUT – VGOFF to DCOUT –6V 15 60 μs tBIDOFF Turn “OFF” From DCOUT – VGON to DCOUT –1.5V 8 20 μs
PWM Flyback Converter
VOHF CHGFET, DCHFET High ICHGFET, IDCHFET = –1mA 4.5 4.75 5.25 V VOLF CHGFET, DCHFET Low ICHGFET, IDCHFET = 1mA 50 mV VOLFX CHGFET, DCHFET in Shutdown and Backup VDCIN = VDCDIV = VDCOUT = 0V (Shutdown Modes Mode), VDCIN = VDCDIV = 0V (Backup Mode) 100 mV ICHGFET, IDCHFET = 1μA CHGFET, DCHFET Transition Times tR Rise Time CLOAD = 1.6nF, 20% to 80% 35 65 ns tF Fall Time CLOAD = 1.6nF, 20% to 80% 15 65 ns FPWM PWM Oscillator Switching Frequency l 255 300 340 kHz
SafetySignal Decoder and Thermistor Interface
SSOR SafetySignal Decoder RTHA = 1130Ω ±1%, CTH = 1nF (Note 6) RTHB SafetySignal Trip = 54.9k ±1%. l 95 100 105 k (RES_COLD/RES_OR) Smart Batteries and Li-Ion Only SSCLD SafetySignal Decoder RTHA = 1130Ω ±1%, CTH = 1nF (Note 6) RTHB SafetySignal Trip = 54.9k ±1% l 28.5 30 31.5 k (RES_IDEAL/RES_COLD) Smart Batteries and Li-Ion Only SSIDL SafetySignal Decoder RTHA = 1130Ω ±1%, CTH = 1nF (Note 6) RTHB SafetySignal Trip = 54.9k ±1% l 2.85 3 3.15 k (RES_HOT/RES_IDEAL) Smart Batteries and Li-Ion Only SSHOT SafetySignal Decoder RTHA = 1130Ω ±1%, CTH = 1nF (Note 6) RTHB SafetySignal Trip = 54.9k ±1% l 425 500 575 Ω (RES_UR/RES_HOT) Smart Batteries and Li-Ion Only VHOT THB Pin Hot Threshold Voltage VTHB Decreasing; Lead Acid Only l 0.28 • 0.30 • 0.36 • V VTHA VTHA VTHA VHOTH THB Pin Hot Threshold Hysteresis Voltage VTHB Increasing; Lead Acid Only 50 mV VREM THB Pin Battery Removal Threshold Voltage VTHB Increasing; Lead Acid Only l 0.90 • 0.94 • 0.96 • V VTHA VTHA VTHA 4110fb 5