Datasheet LT3650-4.1, LT3650-4.2 (Analog Devices) - 5

LT3650-4.1/LT3650-4.2
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Switch Drive (ISW/IBOOST) Switch Forward Drop (VIN – VSW) CC/CV Charging; SENSE Pin Bias vs ISW vs Temperature Current vs VSENSE
36 480 100 I LT3650-4.2 33 SW = 2A 460 50 30 27 440 0 –50 24 420 21 (µA) –100 /I BOOST 18 400 –150 I SW 15 380 I SENSE 12 –200 9 360 –250 6 SWITCH FORWARD DROP (mV) 340 3 –300 0 320 –350 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 –50 –25 0 25 50 75 100 125 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 ISW (A) TEMPERATURE (°C) VSENSE (V) 365042 G04 365042 G05 365042 G06
CLP Input Limit Threshold C/10 Threshold (VSENSE – VBAT) (VCLP – VIN) vs Temperature, IMAX Current Limit (VSENSE – VBAT) vs Temperature ICHG at 50% vs Temperature
12 51.0 101.0 VBAT = 3.5V 50.8 100.8 50.6 100.6 11 50.4 100.4 (mV) 50.2 (mV) 100.2 (mV) V BAT 10 V IN 50.0 V BAT 100.0 – – – 49.8 99.8 V CLP V SENSE 49.6 V SENSE 99.6 9 49.4 99.4 49.2 99.2 8 49.0 99.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 365042 G07 365042 G08 365042 G09
Thermal Foldback – IMAX Battery Bias Current with Charger Current Limit (VSENSE – VBAT) CC/CV Charging; BAT Pin Bias Disabled (IBAT + ISENSE + IBOOST vs Temperature Current vs VBAT + ISW)
120 2.2 5.0 2.0 LT3650-4.2 4.5 1.8 100 1.6 4.0 1.4 3.5 80 (mV) 1.2 3.0 BAT 1.0 VIN FLOATING 60 (mA) 2.5 – V 0.8 I BAT 0.6 2.0 V SENSE 40 0.4 1.5 0.2 BATTERY CURRENT (µA) 20 1.0 0.0 –0.2 0.5 VIN = 20V, VSHDN = 0V 0 –0.4 0 25 35 45 55 65 75 85 95 105 115 125 135 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 TEMPERATURE (°C) VBAT (V) V 365042 G10 365042 G11 BAT (V) 365042 G12 36504142fc 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts