Datasheet LT3652HV (Analog Devices) - 3

LT3652HV
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 20V, Boost – SW = 4V, SHDN = 2V, VFB = 3.3V, CTIMER = 0.68µF. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN VIN Operating Range VBAT = 4.2 (Notes 3, 4) l 4.95 34 V VIN Start Voltage VBAT = 4.2 (Note 4) l 7.5 V VIN(OVLO) OVLO Threshold VIN Rising l 34 35 40 V OVLO Hysteresis 1 V VIN(UVLO) UVLO Threshold VIN Rising 4.6 4.95 V UVLO Hysteresis 0.2 V VFB(FLT) Float Voltage Reference (Note 6) 3.282 3.3 3.318 V l 3.26 3.34 V ΔVRECHARGE Recharge Reference Threshold Voltage Relative to VFB(FLT) (Note 6) 82.5 mV VFB(PRE) Reference Precondition Threshold VFB Rising (Note 6) 2.3 V VFB(PREHYST) Reference Precondition Threshold Voltage Relative to VFB(PRE) (Note 6) 70 mV Hysteresis VIN_REG(TH) Input Regulation Reference VFB = 3V; VSENSE – VBAT = 50mV l 2.65 2.7 2.75 V IIN_REG Input Regulation Reference Bias Current VIN_REG = VIN_REG(TH) l 35 100 nA IVIN Operating Input Supply Current CC/CV Mode, ISW = 0 l 2.5 3.5 mA Standby Mode 85 µA Shutdown (SHDN = 0) 15 µA IBOOST BOOST Supply Current Switch On, ISW = 0, 20 mA 2.5 < V(BOOST – SW) < 8.5 IBOOST/ISW BOOST Switch Drive ISW = 2A 30 mA/A VSW(ON) Switch-On Voltage Drop VIN – VSW, ISW = 2A 350 mV ISW(MAX) Switch Current Limit l 2.5 3 A VSENSE(PRE) Precondition Sense Voltage VSENSE – VBAT; VFB = 2V 15 mV VSENSE(DC) Maximum Sense Voltage VSENSE – VBAT; VFB = 3V (Note 7) l 95 100 105 mV VSENSE(C/10) C/10 Trigger Sense Voltage VSENSE – VBAT, Falling l 7.5 10 12.5 mV IBAT BAT Input Bias Current Charging Terminated 0.1 1 µA ISENSE SENSE Input Bias Current Charging Terminated 0.1 1 µA IVFB VFB Input Bias Current Charging Terminated 65 nA IVFB VFB Input Bias Current CV Operation (Note 5) 110 nA VNTC(H) NTC Range Limit (High) VNTC Rising l 1.25 1.36 1.45 V VNTC(L) NTC Range Limit (Low) VNTC Falling l 0.27 0.29 0.315 V VNTC(HYST) NTC Threshold Hysteresis % of threshold 20 % RNTC(DIS) NTC Disable Impedance Impedance to ground l 250 500 kΩ INTC NTC Bias Current VNTC = 0.8V l 47.5 50 52.5 µA VSHDN Shutdown Threshold Rising l 1.15 1.2 1.25 V VSHDN(HYST) Shutdown Hysteresis 120 mV ISHDN SHDN Input Bias Current –10 nA VCHRG, VFAULT Status Low Voltage 10mA Load l 0.4 V ITIMER Charge/Discharge Current 25 µA VTIMER(DIS) Timer Disable Threshold l 0.1 0.25 V 3652hvfb For more information www.linear.com/LT3652HV 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts