Datasheet LT3652 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Power Tracking 2A Battery Charger for Solar Power |
| 页数 / 页 | 26 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 534 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Thermal Foldback – Maximum. Maximum Charge Current
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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
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