Datasheet LTC4162-S (Analog Devices) - 4

link to page 42 LTC4162-S
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 4). VIN = 18V, DVCC = 3.3V, RSNSI = 10mΩ, RSNSB = 10mΩ unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS System Voltages and Currents
VIN Input Supply Voltage l 4.5 35 V VBAT Battery Voltage l 2.7 35 V IBATSENS+ Battery Drain Current VIN – VBATSENS+ > VIN_DUVLO, Terminated 0.5 1 µA VIN – VBATSENS+ < VIN_DUVLO 54 100 µA VIN = 0, SHIPMODE Activated 2.8 5 µA IVIN VIN Drain Current VIN – VBATSENS+ > VIN_DUVLO, Terminated 115 200 µA
Switching Battery Charger
VCHARGE Range 6–7.8 V Resolution (6 Bits) 28.571 mV Accuracy Per 6V Battery –0.5 0.5 % l –1.5 1.5 % ICHARGE Range 1–32 mV Servo Voltage Resolution (5 Bits) ICHARGE = (VCSP – VCSN)/RSNSB 1 mV (VCSP – VCSN) Accuracy Note 5 –0.25 0.25 mV l –0.75 0.75 mV IINLIM Range 0.5–32 mV Servo Voltage Resolution (6 Bits) IIN = (VCLP – VCLN)/RSNSI 0.5 mV (VCLP – VCLN) Accuracy Note 6 –0.2 0.2 mV VINLIM Range 0.14–36 V Resolution (8 Bits) 140.625 mV Full Scale Accuracy –1 1 % fOSC Switching Frequency RT = 63.4k l 1.4 1.5 1.6 MHz DMAX Maximum Duty Cycle 99.5 % RSWITCH Primary Switch On-Resistance 90 mΩ RRECT Rectifier Switch On-Resistance 90 mΩ IPEAK Peak Inductor Current Limit Note 3 45mV/RSNSB A
System Controls
VIN_UVLO VIN Charger Enable Rising Threshold 4.2 4.4 4.6 V Input Undervoltage Lockout Hysteresis 0.2 V VIN_DUVLO VIN to BATSENS+ Charger Enable Rising Threshold 100 150 200 mV Differential Undervoltage Lockout Hysteresis 170 mV VIN_OVLO VIN Charger Disable Rising Threshold 37.6 38.6 40 V Overvoltage Lockout Hysteresis 1.4 V VINTVCC_UVLO INTVCC Telemetry Enable Rising Threshold 2.75 2.85 2.95 V Undervoltage Lockout Hysteresis 0.12 V Rev B 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram ESD Diagram Timing Diagram Operation Applications Information Register Descriptions Typical Applications Package Description Revision History Typical Application Related Parts