Datasheet LT3652 (Analog Devices) - 6

LT3652
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Thermal Foldback – Maximum Maximum Charge Current Charge Current (VSENSE–VBAT) Maximum Charge Current (VSENSE–VBAT) vs Temperature vs Temperature (VSENSE–VBAT) vs VIN_REG Voltage
101.0 120 100 VFB = 3V 100.8 100 100.6 80 100.4 80 (mV) 100.2 (mV) (mV) 60 100.0 60 99.8 40 V SENSE(DC) V SENSE(DC) V SENSE(DC) 99.6 40 99.4 20 20 99.2 99.0 0 0 –50 –25 0 25 50 75 100 125 25 35 45 55 65 75 85 95 105 115 125 135 2.65 2.66 2.67 2.68 2.69 2.7 2.71 2.72 2.73 2.74 2.75 TEMPERATURE (°C) TEMPERATURE (°C) VIN_REG (V) 3652 G07 3652 G08 3652 G09
Battery Bias Current VFLOAT Programming Resistor CC/CV Charging; BAT Pin Bias with Charger Disabled Current vs VFLOAT for 2-Resistor Current vs VBAT (IBAT + ISENSE + IBOOST + ISW) Network
2.2 16 12 2.0 1.8 14 10 1.6 12 1.4 VIN FLOATING 8 1.2 10 1.0 (mA) 8 (µA) 6 0.8 I BAT I RFB 0.6 6 0.4 4 0.2 BATTERY CURRENT (µA) 4 0.0 2 2 –0.2 VBAT(FLT) VIN = 20V; VSHDN = 0V –0.4 0 0 0 0.5 1 1.5 2 2.5 3 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 VBAT (V) VBAT (V) VBAT(FLT) (V) 3652 G10 3652 G11 3652 G11
Charge Current, Efficiency, and Power Loss vs Time Charger Efficiency vs Battery (ICHG(MAX) = 2A; VFLOAT = 8.2V) Voltage (ICHG = 2A)
3.0 95 90 VIN = 20V 88 EFFICIENCY 2.5 85 86 POWER EFFICIENCY (%) 2.0 84 LOSS 75 CHARGE (%) 82 CURRENT 1.5 65 80 78 1.0 55 EFFICIENCY 76 74 0.5 45 CHARGE CURRENT (A); POWER LOSS (W) 72 VIN = 20V WITH INPUT BLOCKING DIODE 0 35 70 0 20 40 60 80 100 120 140 160 180 200 3 4 5 6 7 8 9 10 11 12 13 14 15 TIME (MINUTES) VBAT (V) 3652 G12 3652 G13 3652fe 6 For more information www.linear.com/LT3652 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Typical Application Related Parts